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Journal articles on the topic 'Sound data compression'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

NARA, SHIGETOSHI, NAOYA ABE, MASATO WADA, and JOUSUKE KUROIWA. "A NOVEL METHOD OF SOUND DATA DESCRIPTION BY MEANS OF CELLULAR AUTOMATA AND ITS APPLICATION TO DATA COMPRESSION." International Journal of Bifurcation and Chaos 09, no. 06 (1999): 1211–17. http://dx.doi.org/10.1142/s0218127499000869.

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A novel method of binary data description using cellular automata is proposed. As an actual example, several trials are made to describe vocal and musical sound data digitized in a standard data format. The reproduced sounds are evaluated by "actual listening", by calculating "the signal to noise ratio" with respect to the original sound data, and by comparing "the Fourier power spectra" with those of the original sounds. The results show that this method is quite effective and provides a new means of data compression applicable in any field of digital data recording or transferring.

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Liang, Zhenyu, Letian Chen, and Wenbin Xiao. "Compression AutoEncoder for High-Resolution Ocean Sound Speed Profile Data." Journal of Physics: Conference Series 2718, no. 1 (2024): 012067. http://dx.doi.org/10.1088/1742-6596/2718/1/012067.

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Abstract High-resolution ocean sound speed profile (HROSSP) data is essential for ocean acoustic modeling and sonar performance evaluation. However, the large volume and storage requirements of this data severely restrict its practical application in ocean acoustics. In this paper, we propose a compression autoencoder specifically designed for managing HROSSP data (CAE-HROSSP) and investigate the optimal network structure. Experimental results demonstrate that by using the min-max normalization method for input data and the corresponding inverse normalization for output data, along with employ

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3

Miyazawa, Takeo. "Rapid sound data compression in code book creation." Journal of the Acoustical Society of America 102, no. 4 (1997): 1925. http://dx.doi.org/10.1121/1.419666.

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Dahunsi, F. M., O. A. Somefun, A. A. Ponnle, and K. B. Adedeji. "Compression Techniques of Electrical Energy Data for Load Monitoring: A Review." Nigerian Journal of Technological Development 18, no. 3 (2021): 194–208. http://dx.doi.org/10.4314/njtd.v18i3.4.

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In recent years, the electric grid has experienced increasing deployment, use, and integration of smart meters and energy monitors. These devices transmit big time-series load data representing consumed electrical energy for load monitoring. However, load monitoring presents reactive issues concerning efficient processing, transmission, and storage. To promote improved efficiency and sustainability of the smart grid, one approach to manage this challenge is applying data-compression techniques. The subject of compressing electrical energy data (EED) has received quite an active interest in the

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Yan, Kaizhuang, Yongxian Wang, and Wenbin Xiao. "A New Compression and Storage Method for High-Resolution SSP Data Based-on Dictionary Learning." Journal of Marine Science and Engineering 10, no. 8 (2022): 1095. http://dx.doi.org/10.3390/jmse10081095.

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The sound speed profile data of seawater provide an important basis for carrying out underwater acoustic modeling and analysis, sonar performance evaluation, and underwater acoustic assistant decision-making. The data volume of the high-resolution sound speed profile is vast, and the demand for data storage space is high, which severely limits the analysis and application of the high-resolution sound speed profile data in the field of marine acoustics. This paper uses the dictionary learning method to achieve sparse coding of the high-resolution sound speed profile and uses a compressed sparse

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Akimov, V. A. "Remote technologies in Education. Compression algorithms and data formats for transmission of text, sound and video information." Izvestiya MGTU MAMI 7, no. 4-2 (2013): 352–55. http://dx.doi.org/10.17816/2074-0530-68284.

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The article describes the features of the application of compression algorithms of information in multimedia learning technologies. There are given the examples of lossy compression algorithms and lossless compression and basic formats of compression of text, graphics and audiovisual information. The analysis of the effectiveness of various algorithms and recommendations for their use in different types of information are presented. The example of Huffman coding is given.

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Nieminen, Heikki J., Juha Töyräs, Mikko S. Laasanen, and Jukka S. Jurvelin. "Acoustic properties of articular cartilage under mechanical stress." Biorheology: The Official Journal of the International Society of Biorheology 43, no. 3-4 (2006): 523–35. http://dx.doi.org/10.1177/0006355x2006043003004035.

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Mechano-acoustic and elastographic techniques may provide quantitative means for the in vivo diagnostics of articular cartilage. These techniques assume that sound speed does not change during tissue loading. As articular cartilage shows volumetric changes during compression, acoustic properties of cartilage may change affecting the validity of mechano-acoustic measurements. In this study, we examined the ultrasound propagation through human, bovine and porcine articular cartilage during stress-relaxation in unconfined compression. The time of flight (TOF) technique with known cartilage thickn

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Pittman, Andrea L., Ashley J. Pederson, and Madalyn A. Rash. "Effects of Fast, Slow, and Adaptive Amplitude Compression on Children’s and Adults’ Perception of Meaningful Acoustic Information." Journal of the American Academy of Audiology 25, no. 09 (2014): 834–47. http://dx.doi.org/10.3766/jaaa.25.9.6.

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Background: Fast- and slow-acting amplitude compression parameters have complementary strengths and weaknesses that limit the full benefit of this feature to hearing aid users. Adaptive time constants have been suggested in the literature as a means of optimizing the benefits of amplitude compression. Purpose: The purpose of this study was to compare the effects of three amplitude compression release times (slow, fast, and adaptive) on children’s and adults’ accuracy for categorizing speech and environmental sounds. Research Design: Participants were asked to categorize speech or environmental

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Ricketts, Todd, Wesley D. Grantham, Patrick D'Haese, Jason Edwards, and Amy Barco. "Cochlear Implant Speech Processor Placement and Compression Effects on Sound Sensitivity and Interaural Level Difference." Journal of the American Academy of Audiology 17, no. 02 (2006): 133–40. http://dx.doi.org/10.3766/jaaa.17.2.5.

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The purpose of this investigation was to determine the impact of commonly recommended cochlear implant (CI) speech processor placements on microphone output both with and without single channel front-end compression. The impact of this compression use on interaural level difference (ILD) magnitude was also evaluated for the ear-level position. Finally, pilot localization data collected with and without single channel front-end compression was collected on seven bilateral cochlear implant recipients. The results revealed that differences in signal audibility due to clinical placement of CI spee

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Gedeon, T. D. "Multimedia Information Compression Technologies." Journal of Advanced Computational Intelligence and Intelligent Informatics 4, no. 6 (2000): 401–2. http://dx.doi.org/10.20965/jaciii.2000.p0401.

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<em>Introduction</em> We are drowning in data. What kinds of data? - Text. Images. Sound. Numeric. Genome data. Text: Every day vast amounts of textual data are generated. This ranges from private corporate data, personal information, public and private government documents and so on. Much of this data needs to be accessed by many users for many tasks. For example, a corporate call centre needs fast access to documents at a semi-concept level to answer user requests. Another example: large litigations can involve 2 million documents, 200,000 of which are relevant, much fewer signif

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Hedges, Michael. "‘Modulation’ by Richard Powers: Digital sound, compression and the short story." Short Fiction in Theory & Practice 11, no. 1-2 (2021): 161–76. http://dx.doi.org/10.1386/fict_00042_1.

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This article presents a reading of ‘Modulation’ (2008) by Richard Powers. Firstly, I consider the short story’s representation of the MP3 music file, specifically its effects on how music is circulated and stored, as well as how it sounds. These changes are the result of different processes of compression. The MP3 format makes use of data compression to reduce the file size of a digital recording significantly. Such a loss of information devises new social and material relations between what remains of the original music, the recording industry from which MP3s emerged and the online markets in

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Amoah, Godwin Awuah, and Esthella Rahama Abdul Wahab. "Comparative Analysis of Multimedia Compression Algorithms." Asian Journal of Mathematics and Computer Research 30, no. 2 (2023): 26–37. http://dx.doi.org/10.56557/ajomcor/2023/v30i28265.

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Data compression reduces the amount of bits needed to encode information, conserving expensive resources like disc space and transmission bandwidth. By using data compression, an information block's real size is kept as little as possible. The compression process consists of two steps: encoding, which uses fewer bits to compress a message, and decoding, which uses the compressed representation to roughly resemble or replicate the original message. The two main types of data compression are lossless compression and lossy approaches. The Huffman, Lempel-Ziv, and Run Length encoding techniques we

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Carpentieri, Bruno, and Francesco Palmieri. "Transmission of Digital Data in the 5G Era: Compression and Privacy." Information 14, no. 2 (2023): 135. http://dx.doi.org/10.3390/info14020135.

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The vast majority of compressed digital data that flows nowadays on modern high-speed networks is directly related to human activity. It describes what we do, what we see and photograph, where we go, whom we meet, and specifically every moment of our lives. This brings up issues and concerns regarding the necessity to safeguard user privacy as well as to protect the digital multimedia contents that are delivered to offer new experiences. In this paper, we explore a unified approach to compression and privacy by considering different types of digital data (text, images, sound, and hyperspectral

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Noor, Noor, and Qusay Abboodi Ali. "A New Method for Intelligent Multimedia Compression Based on Discrete Hartley Matrix." Fusion: Practice and Applications 16, no. 2 (2024): 108–17. http://dx.doi.org/10.54216/fpa.160207.

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Multimedia data (video, audio, images) require storage space and transmission bandwidth when sent through social media networking. Despite rapid advances in the capabilities of digital communication systems, the high data size and data transfer bandwidth continue to exceed the capabilities of available technology, especially among social media users. The recent growth of multimedia-based web applications such as WhatsApp, Telegram, and Messenger has created a need for more efficient ways to compress media data. This is because the transmission speed of networks for multimedia data is relativel

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Nuradin, G., and B. Adilbek. "PHILOSOPHY OF SOUND: WAVELET TRANSFORM FOR PROCESSING OF AUDIO SIGNAL." Sciences of Europe, no. 106 (December 7, 2022): 71–77. https://doi.org/10.5281/zenodo.7408633.

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Research objects: Sound philosophy. Processing audio data based on the use of the Wavelet Transform and their philosophy Aim of the search: The main issues under consideration relate to the nature of sounds. Research of the principles of signal noise purification using wavelet transforms, evaluation of the quality of the restored signal and determination of the best order of Dobeshi wavelets, the threshold method, furthermore determine the number of decomposition levels. Approaches to research: The research used philosophy of sound and methods of mathematical analysis, Fourier's fast trans

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Zhou, Luyan, Gang Jiang, Bo Gan, Yukai Zhuang, Hong Zhang та Youjun Zhang. "Sound velocities of natural goethite across α–ɛ phase transformation under dynamic compression". Journal of Applied Physics 133, № 14 (2023): 145902. http://dx.doi.org/10.1063/5.0136788.

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Goethite (α-FeOOH), a vital water- and hydrogen-bearing natural mineral, is extensively distributed on the Earth's surface and probably in the lower mantle. Laboratory measurements of its phase transition and sound velocities provide crucial data for a more rational understanding of the deep-water transportation and physical properties of the Earth's interior. Herein, the Hugoniot equation of state and sound velocities of natural goethite up to around 15 GPa are measured by dynamic compression. The discontinuities pertinent to the density and sound velocities of goethite are observed at 7.1 (2

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Teddy, Surya Gunawan, and Kartiwi Mira. "Performance Evaluation of Multichannel Audio Compression." Indonesian Journal of Electrical Engineering and Computer Science 10, no. 1 (2018): 146–53. https://doi.org/10.11591/ijeecs.v10.i1.pp146-153.

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In recent years, multichannel audio systems are widely used in modern sound devices as it can provide more realistic and engaging experience to the listener. This paper focuses on the performance evaluation of three lossy, i.e. AAC, Ogg Vorbis, and Opus, and three lossless compression, i.e. FLAC, TrueAudio, and WavPack, for multichannel audio signals, including stereo, 5.1 and 7.1 channels. Experiments were conducted on the same three audio files but with different channel configurations. The performance of each encoder was evaluated based on its encoding time (averaged over 100 times), data r

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Mohammed Asadullah, Sher Afghan Khan, Parvathy Rajendran, and Ervin Sulaeman. "Design Intent of Future Tunnels." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 88, no. 2 (2021): 50–63. http://dx.doi.org/10.37934/arfmts.88.2.5063.

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The sound barrier for bullet trains remains a challenge due to the piston effect causing compression waves at the entry and exit of the tunnel. The air ahead of the train nose is compressed, and the wave propagates through the tunnel at the speed of sound and exits with the generation of micro pressure waves. It gives rise to a complex wave pattern comprising compression at the train nose & expansion at the train tail leading to the positive pressure around the nose and suction around the tail. This is intended to provide exhaustive input for the proper design of a futuristic tunnel. The c

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HANTSCHK, Carl Christian, and Marco GEISLER. "Challenges in delivering effective noise management at gas compressor stations." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 5 (2023): 2793–800. http://dx.doi.org/10.3397/in_2022_0391.

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The basic principles applied in gas compressor stations to manage noise and demonstrate compliance with statutory acoustic requirements are not different from those used with most other industrial activities. Well-known and proven standard procedures involve sound emission assessment, acoustic modeling, model verification, development of a noise control concept and its optimisation until compliance can be demonstrated. However, noise control for some of the typical equipment in gas compression is extremely demanding in terms of both acoustic and operational/safety aspects so that it requires s

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20

Emvoliadis, Alexandros, Nikolaos Vryzas, Marina-Eirini Stamatiadou, Lazaros Vrysis, and Charalampos Dimoulas. "Multimodal Environmental Sensing Using AI & IoT Solutions: A Cognitive Sound Analysis Perspective." Sensors 24, no. 9 (2024): 2755. http://dx.doi.org/10.3390/s24092755.

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This study presents a novel audio compression technique, tailored for environmental monitoring within multi-modal data processing pipelines. Considering the crucial role that audio data play in environmental evaluations, particularly in contexts with extreme resource limitations, our strategy substantially decreases bit rates to facilitate efficient data transfer and storage. This is accomplished without undermining the accuracy necessary for trustworthy air pollution analysis while simultaneously minimizing processing expenses. More specifically, our approach fuses a Deep-Learning-based model

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Pudov, V. I., and O. V. Zontova. "Biophysical aspects of auditory perception in patients with cochlear implants." Russian Otorhinolaryngology 22, no. 6 (2023): 82–87. http://dx.doi.org/10.18692/1810-4800-2023-6-82-87.

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In recent years, huge progress has been made in the design and operation of cochlear implants. The published literature notes that the quality of sound perception among cochlear implant users is severely limited. Usually, patients experience difficulties in difficult situations, such as speech perception in noisy environments or in a situation with several speakers. There are many factors, both technical and physiological, that complicate auditory perception in patients with cochlear implants. The main characteristics of auditory perception are the height and volume of perceived sounds. This a

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Sun, Liang, Huan Zhang, Zanyang Guan, et al. "Sound Velocity Measurement of Shock-Compressed Quartz at Extreme Conditions." Minerals 11, no. 12 (2021): 1334. http://dx.doi.org/10.3390/min11121334.

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The physical properties of basic minerals such as magnesium silicates, oxides, and silica at extreme conditions, up to 1000 s of GPa, are crucial to understand the behaviors of magma oceans and melting in Super-Earths discovered to data. Their sound velocity at the conditions relevant to the Super-Earth’s mantle is a key parameter for melting process in determining the physical and chemical evolution of planetary interiors. In this article, we used laser indirectly driven shock compression for quartz to document the sound velocity of quartz at pressures of 270 GPa to 870 GPa during lateral unl

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Kan, Guangming, Junjie Lu, Xiangmei Meng, et al. "Prediction Model of the Sound Speed of Seafloor Sediments on the Continental Shelf of the East China Sea Based on Empirical Equations." Journal of Marine Science and Engineering 12, no. 1 (2023): 27. http://dx.doi.org/10.3390/jmse12010027.

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Based on the data of the acoustic and physical properties of seafloor sediments obtained on the continental shelf area of the East China Sea (ECS), prediction equations of the sediment sound speed based on single and dual parameters were established, and the correlation of the sound speed with physical parameters was discussed. The results show that the sediment sound speed (c) is strongly correlated with water content (w), density (ρ), void ratio (e), mean grain size (Mz) and median grain size (Md), and the coefficient of determination R2 of the empirical regression equation is generally grea

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Xu, Li, Solveig C. Voss, Jing Yang, et al. "Speech Perception and Sound-Quality Rating with an Adaptive Nonlinear Frequency Compression Algorithm in Mandarin-Speaking Hearing Aid Users." Journal of the American Academy of Audiology 31, no. 08 (2020): 590–98. http://dx.doi.org/10.1055/s-0040-1709450.

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Abstract Background Mandarin Chinese has a rich repertoire of high-frequency speech sounds. This may pose a remarkable challenge to hearing-impaired listeners who speak Mandarin Chinese because of their high-frequency sloping hearing loss. An adaptive nonlinear frequency compression (adaptive NLFC) algorithm has been implemented in contemporary hearing aids to alleviate the problem. Purpose The present study examined the performance of speech perception and sound-quality rating in Mandarin-speaking hearing-impaired listeners using hearing aids fitted with adaptive NLFC (i.e., SoundRecover2 or

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Rubby, Garg* Dr.Vijay Laxmi. "A REVIEW ON VARIOUS AUDIO STEGANOGRAPHY TECHNIQUES FOR AUDIO SIGNALS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 10 (2016): 494–97. https://doi.org/10.5281/zenodo.160886.

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Steganography is the art and science of writing hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message, a form of security through obscurity. Steganography works by replacing bits of useless or unused data in regular computer files (such as graphics, sound, text, HTML, or even floppy disks) with bits of different, invisible information. This hidden information can be plain text, cipher text, or even images. In a computer-based audio Steganography system, secret messages are embedded in digital sound. The secret message is

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Abu-Taieh, Evon, and Issam AlHadid. "CRUSH: A New Lossless Compression Algorithm." Modern Applied Science 12, no. 11 (2018): 387. http://dx.doi.org/10.5539/mas.v12n11p387.

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Multimedia is highly competitive world, one of the properties that is reflected is speed of download and upload of multimedia elements: text, sound, pictures, animation. This paper presents CRUSH algorithm which is a lossless compression algorithm. CRUSH algorithm can be used to compress files. CRUSH method is fast and simple with time complexity O(n) where n is the number of elements being compressed.Furthermore, compressed file is independent from algorithm and unnecessary data structures. As the paper will show comparison with other compression algorithms like Shannon&ndash;Fano code, H

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Abu-Taieh, Evon, and Issam AlHadid. "CRUSH: A New Lossless Compression Algorithm." Modern Applied Science 12, no. 11 (2018): 406. http://dx.doi.org/10.5539/mas.v12n11p406.

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Multimedia is highly competitive world, one of the properties that is reflected is speed of download and upload of multimedia elements: text, sound, pictures, animation. This paper presents CRUSH algorithm which is a lossless compression algorithm. CRUSH algorithm can be used to compress files. CRUSH method is fast and simple with time complexity O(n) where n is the number of elements being compressed.Furthermore, compressed file is independent from algorithm and unnecessary data structures. As the paper will show comparison with other compression algorithms like Shannon&ndash;Fano code, H

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Ahn, Jungho, Hyeok Lee, Habin Kang, et al. "Pneumatically Actuated Microfluidic Platform for Reconstituting 3D Vascular Tissue Compression." Applied Sciences 10, no. 6 (2020): 2027. http://dx.doi.org/10.3390/app10062027.

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In vivo, blood vessels constitutively experience mechanical stresses exerted by adjacent tissues and other structural elements. Vascular collapse, a structural failure of vascular tissues, may stem from any number of possible compressive forces ranging from injury to tumor growth and can promote inflammation. In particular, endothelial cells are continuously exposed to varying mechanical stimuli, internally and externally, resulting in blood vessel deformation and injury. This study proposed a method to model biomechanical-stimuli-induced blood vessel compression in vitro within a polydimethyl

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Zhang, Jinquan, Bing Han, Hui-Bing Xie, Li Zhu, Gang Zheng, and Wenwu Wang. "Correlation between Coda Wave and Stresses in Uni-Axial Compression Concrete." Applied Sciences 8, no. 9 (2018): 1609. http://dx.doi.org/10.3390/app8091609.

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Stresses in structures are usually converted by measured strains based on corresponding constitutive relations of materials. However, it is difficult to determine the constitutive relation of the material accurately, which leads to significant uncertainty of the converted stresses. This paper proposed a method to estimate the stresses in concrete by using the coda wave interference technique and established a model to describe the relation between the deformation of microcracks and the sound velocity. Based on the experiments, the development law of the coda waves with different frequencies of

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Yang, Fei, Xinmin Shen, Panfeng Bai, Xiaonan Zhang, Zhizhong Li, and Qin Yin. "Optimization and Validation of Sound Absorption Performance of 10-Layer Gradient Compressed Porous Metal." Metals 9, no. 5 (2019): 588. http://dx.doi.org/10.3390/met9050588.

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Sound absorption performance of a porous metal can be improved by compression and optimal permutation, which is favorable to promote its application in noise reduction. The 10-layer gradient compressed porous metal was proposed to obtain optimal sound absorption performance. A theoretical model of the sound absorption coefficient of the multilayer gradient compressed porous metal was constructed according to the Johnson-Champoux-Allard model. Optimal parameters for the best sound absorption performance of the 10-layer gradient compressed porous metal were achieved by a cuckoo search algorithm

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Paranayapa, Thivindu, Piumini Ranasinghe, Dakshina Ranmal, Dulani Meedeniya, and Charith Perera. "A Comparative Study of Preprocessing and Model Compression Techniques in Deep Learning for Forest Sound Classification." Sensors 24, no. 4 (2024): 1149. http://dx.doi.org/10.3390/s24041149.

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Deep-learning models play a significant role in modern software solutions, with the capabilities of handling complex tasks, improving accuracy, automating processes, and adapting to diverse domains, eventually contributing to advancements in various industries. This study provides a comparative study on deep-learning techniques that can also be deployed on resource-constrained edge devices. As a novel contribution, we analyze the performance of seven Convolutional Neural Network models in the context of data augmentation, feature extraction, and model compression using acoustic data. The resul

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Rahdianando, Gilang, and Faza Sadikin Permana. "Innovating musical composition through urban noise: A case study in experimental sound." Interlude: Indonesian Journal of Music Research, Development, and Technology 2, no. 1 (2022): 10–25. http://dx.doi.org/10.17509/interlude.v2i1.68154.

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The journey from concept to finished product is fascinating and intricate. It begins with a spark of inspiration, an idea that ignites the creative fire within. This concept serves as the foundation upon which the entire project is built. This research used a qualitative method with a case study approach. This research uses two types of data, including audio data of musical compositions and literature sources from articles and journals. The first step is to collect audio samples. This involves scouring libraries, recording sessions, and creating custom sounds to fit the project's vision. Each

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Luo, Binqiang, Jianjun Mo, Guiji Wang, Fuli Tan, Jianheng Zhao, and Chengwei Sun. "Elastic Behavior of Zirconia under Ramp Compression." EPJ Web of Conferences 183 (2018): 03026. http://dx.doi.org/10.1051/epjconf/201818303026.

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Dynamic properties of single crystal cubic zirconia were investigated under magnetically driven ramp wave compression on pulsed power generator CQ-4. Photonic Doppler Velocimeter (PDV) was employed to measure the free surface velocities of stepped samples. The elastic particle velocity and Ramp Elastic Limit (REL) of <100> cubic zirconia under ramp wave compression are 475 m/s and 25.4 GPa respectively, which are much higher than shock results reported in literature. The <110> cubic zirconia was loaded to maximum particle velocity 460 m/s and pressure 20.8 GPa in elastic region, bu

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Sisodia, Ankur, and Ajay Kumar Yadav. "Analysis of the Performance of IoT Networks in Acoustic Environment by using LZW Data Compression Technique." International Journal on Recent and Innovation Trends in Computing and Communication 11, no. 9s (2023): 311–21. http://dx.doi.org/10.17762/ijritcc.v11i9s.7425.

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The Internet of Things (IoT) has experienced phenomenal growth, opening up a wide range of applications in many settings. Due to the properties of sound propagation, IoT networks operating in acoustic environments in particular present special difficulties. Data compression techniques can be used to minimize overhead and maximize resource utilization in these networks to increase performance. The performance of IoT networks in acoustic environments is examined in this study, with a focus on routing overhead, throughput, and typical end-to-end delay. Lempel-Ziv-Welch (LZW) data compression is u

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Parapat, Rosdelima. "Kompresi Video Digital Menggunakan Metode Embedded Zerotree Wavelet (EZW)." Journal of Computing and Informatics Research 1, no. 3 (2022): 65–70. http://dx.doi.org/10.47065/comforch.v1i3.320.

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In the era of technology in the field of multimedia, especially in processing moving images or often called digital video, it is very fast and competes in image and sound quality. Video files in MP4 format are very widely used today on social media which results in little storage space remaining in memory. Data compression is a process that can convert an input data stream (original data) into another data stream (compressed data) which has a smaller size. The compression process is the process of reducing the size of a data to produce a digital representation that is dense or compact but can

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MOSES, J. M., D. W. DESHMUKH, V. M. TANGDE, A. S. DHONDGE, L. J. PALIWAL, and S. S. DHONDGE. "Volumetric and Acoustic Properties of D(+) Glucosamine·HCl and L-Lysine·HCl in Aqueous Solutions at Different Temperatures." Asian Journal of Chemistry 33, no. 2 (2021): 325–32. http://dx.doi.org/10.14233/ajchem.2021.22997.

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In present work, density and speed of sound of aqueous binary mixtures of biologically important amino acid derivatives namely D(+) glucosamine·HCl and L-lysine·HCl have been measured at three different temperatures i.e. (278.15, 288.15 and 298.15) K and in the concentration range of 0.0-0.2 mol kg-1. Using density and speed of sound data, different thermodynamic and acoustic parameters like apparent molar volume (Vφ) and apparent molar isentropic compression (Kφ) of solute have been computed at different temperatures. Speed of sound data have also been used to calculate hydration number (nH)

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Zhang, Rui, Qingyuan Yang, Hui Li, Dazheng Zhang, Siyu Zheng, and Shengyou Yang. "Study on the Aerodynamic Wind Pressure Behavior Characteristics of High-Speed Railway Sound Barriers." Dynamics 5, no. 2 (2025): 14. https://doi.org/10.3390/dynamics5020014.

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As high-speed train operations increase, the aerodynamic pressure generated by these trains can jeopardize the structural integrity of sound barriers, potentially compromising train safety and the stability of nearby facilities. This paper investigates the unique aerodynamic pressures and load distribution of various types of sound barriers. We analyze the aerodynamic pressure distribution on sound barriers in relation to high-speed trains by utilizing Computational Fluid Dynamics (CFDs) analysis. We explore the theoretical foundations, design of the computational domain, and settings for boun

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Gunawan, Teddy Surya, and Mira Kartiwi. "Performance Evaluation of Multichannel Audio Compression." Indonesian Journal of Electrical Engineering and Computer Science 10, no. 1 (2018): 146. http://dx.doi.org/10.11591/ijeecs.v10.i1.pp146-153.

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<p>In recent years, multichannel audio systems are widely used in modern sound devices as it can provide more realistic and engaging experience to the listener. This paper focuses on the performance evaluation of three lossy, i.e. AAC, Ogg Vorbis, and Opus, and three lossless compression, i.e. FLAC, TrueAudio, and WavPack, for multichannel audio signals, including stereo, 5.1 and 7.1 channels. Experiments were conducted on the same three audio files but with different channel configurations. The performance of each encoder was evaluated based on its encoding time (averaged over 100 times

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Salih, Huda M. "Adaptive speech compression based on AMBTC." Periodicals of Engineering and Natural Sciences (PEN) 10, no. 2 (2022): 199–206. https://doi.org/10.21533/pen.v10.i2.598.

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Most of the AMBTC-based RDH (absolute instantaneous block truncation) schemes Cannot be decrypted because AMBTC, which is unknown to most device. Also, some of the RDH methods based on AMBTC. But the load capacity obtained is low. For this purpose, in this work, a scalable RDH scheme based on AMBTC was introduced from the AMBTC zip code. In contrast to the decoder-based AMBTC-based RDH methods that are only able to achieve a constant payload for adjust the audio. Due to its advantages, sound pressure has attracted a great deal of attention in the last 20 years. The main developments concern tr

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Wang, Chaoyi, Yaozhe Song, Haolong Liu, et al. "Real-Time Vehicle Sound Detection System Based on Depthwise Separable Convolution Neural Network and Spectrogram Augmentation." Remote Sensing 14, no. 19 (2022): 4848. http://dx.doi.org/10.3390/rs14194848.

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This paper proposes a lightweight model combined with data augmentation for vehicle detection in an intelligent sensor system. Vehicle detection can be considered as a binary classification problem, vehicle or non-vehicle. Deep neural networks have shown high accuracy in audio classification, and convolution neural networks are widely used for audio feature extraction and audio classification. However, the performance of deep neural networks is highly dependent on the availability of large quantities of training data. Recordings such as tracked vehicles are limited, and data augmentation techn

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Sanchez-Torres, Esmeralda, Bhisham Sharma, Daniel Sutliff, et al. "Evaluation of metal foam liners for broadband noise reduction of turbofan engines." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 266, no. 2 (2023): 264–72. http://dx.doi.org/10.3397/nc_2023_0038.

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Previous research shows that open-celled metal foam liners have the potential to provide substantial aircraft noise reduction benefits. Our recent results show that their normal incidence sound absorption performance can be further improved by compressing them uniformly; this compression reduces their effective pore size and increases the thermoviscous losses. Further, their performance may be optimized by stacking foams with varying degrees of compression and creating a step-wise effective relative density gradient. Here, we present the results from our recent experiments, evaluating the atte

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Potirakis, Stelios M., Bilel Nefzi, Nikolas Alexander Tatlas, Gurkan Tuna, and Maria Rangoussi. "A Wireless Network of Acoustic Sensors for Environmental Monitoring." Key Engineering Materials 605 (April 2014): 43–46. http://dx.doi.org/10.4028/www.scientific.net/kem.605.43.

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A distributed microelectronic system for the sound/acoustic monitoring of areas of environmental interest, based on a wireless network of acoustic sensors (microphones), and the automated generation of multi-level sound maps for environmental assessment has been recently proposed. This contribution focuses on the relation between the density of the wireless nodes and node operational parameters, like the required communication rate, data compression and power autonomy, in each one of the proposed area coverage schemes/ network architectures. The results provide the grounds both for the selecti

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Siagian, Edward Robinson. "Wave File Compression Analysis and Implementation using The Huffman Method." Blend Sains Jurnal Teknik 1, no. 1 (2022): 38–43. http://dx.doi.org/10.56211/blendsains.v1i1.77.

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One of the sound file formats that are widely used in the Windows operating system is the Wave format (*. WAV). This format is widely used for gaming and multimedia purposes. Wave is actually a raw format where the voice signal is directly recorded and quantized into digital data. The basic format of this file by default does not support compression and is known as PCM (Pulse Code Modulation). If you record a CD Audio quality song using a sampling rate of 44.1 kHz, 16 bits per sample, 2 channels (stereo), then the total media required to store this audio data per second is 176,400 bytes, so fo

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Elberling, Claus. "Loudness Scaling Revisited." Journal of the American Academy of Audiology 10, no. 05 (1999): 248–60. http://dx.doi.org/10.1055/s-0042-1748496.

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AbstractThe present work was undertaken in an attempt to evaluate whether it is reasonable to expect that categorical loudness scaling can provide useful information for nonlinear hearing aid fitting. Normative data from seven scaling procedures show that the individual procedures relate the perceptual categories differently to sound level and with a substantial between-subject variance. Hearing-impaired data from four studies demonstrate that the inverse slope of the loudness function varies linearly with hearing loss and with a constant variance. In relation to hearing aid fitting, the slope

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Ali*, SDN Hayath, and M. Giri. "Multimedia Video Streaming using Advanced Compression and Bandwidth Efficient Technique." International Journal of Recent Technology and Engineering (IJRTE) 8, no. 4 (2019): 10919–22. http://dx.doi.org/10.35940/ijrte.c4395.118419.

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Multimedia is a modern way of communication where lots of images and videos are been transmitted over the wireless sensor network, hence managing the transmission of these records plays an important role when it comes to speed in which the multimedia transferred. In this paper compression technique and bandwidth utilization method is used for the efficient data transmission. Using this one can minimize the bandwidth utilization by compressing the video to the best format where packet won’t be lost and complete packet will be transferred to the destination node. Remote sensor systems is a devel

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Hwang, Young-In, Hyosung Lee, Yong-Il Kim, and Ki-Bok Kim. "Reliability verification of stress data from extracted specimens using L_CR wave stress data from full-section rail specimens." Measurement Science and Technology 33, no. 7 (2022): 075007. http://dx.doi.org/10.1088/1361-6501/ac5b9e.

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Abstract Non-destructive stress measurement using ultrasonic techniques is based on calculation of the acoustoelastic coefficient obtained from the relationship between material stress and sound wave velocity. Longitudinal critically refracted (LCR) waves are the most suitable for ultrasonic stress measurement testing. This is because these waves exhibit a relatively large change in flight time in relation to a change in stress. In general, to calculate the acoustoelastic coefficient, tensile tests are performed with specimens extracted from the test objects to be inspected, and the difference

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Tanaka, Shota, Kyoko Tsukigase, Takahiro Hara, et al. "Effect of real-time visual feedback device ‘Quality Cardiopulmonary Resuscitation (QCPR) Classroom’ with a metronome sound on layperson CPR training in Japan: a cluster randomized control trial." BMJ Open 9, no. 6 (2019): e026140. http://dx.doi.org/10.1136/bmjopen-2018-026140.

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Objectives‘Quality Cardiopulmonary Resuscitation (QCPR) Classroom’ was recently introduced to provide higher-quality Cardiopulmonary Resuscitation (CPR) training. This study aimed to examine whether novel QCPR Classroom training can lead to higher chest-compression quality than standard CPR training.DesignA cluster randomised controlled trial was conducted to compare standard CPR training (control) and QCPR Classroom (intervention).SettingLayperson CPR training in Japan.ParticipantsSix hundred forty-two people aged over 15 years were recruited from among CPR trainees.InterventionsCPR performan

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Kim, Yong Guk, Dong Gwan Kim, Kyucheol Kim, Chang-Ho Choi, Nam In Park, and Hong Kook Kim. "An Efficient Compression Method of Underwater Acoustic Sensor Signals for Underwater Surveillance." Sensors 22, no. 9 (2022): 3415. http://dx.doi.org/10.3390/s22093415.

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In this paper, we propose a new compression method using underwater acoustic sensor signals for underwater surveillance. Generally, sonar applications that are used for surveillance or ocean monitoring are composed of many underwater acoustic sensors to detect significant sources of sound. It is necessary to apply compression methods to the acquired sensor signals due to data processing and storage resource limitations. In addition, depending on the purposes of the operation and the characteristics of the operating environment, it may also be necessary to apply compression methods of low compl

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Chizhov, Ilya. "An AudioCodec Based on the Perceptual Equality between the Original and Restored Audio Signals." Informatics and Automation 24, no. 2 (2025): 428–63. https://doi.org/10.15622/ia.24.2.3.

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A method for lossy audio data compression (AudioCodec) is presented. It allows for improving objective quality of the restored audio signal by 25% at a bitrate of 390 kbps and 55% at a bitrate of 64 kbps compared to the AAC MPEG-4 format. The proposed method of audio data compression is based on an advanced theory of lossy audio data compression (TLAC), which is also introduced in the article. The improvement in the objective quality of the reconstructed audio signal (according to the standardized PEAQ measure) is achieved because the TLAC overcomes issues in modern lossy audio data compressio

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Helms, Annie. "Bay Area Spanish: regional sound change in contact languages." Isogloss. Open Journal of Romance Linguistics 8, no. 2 (2022): 1–18. http://dx.doi.org/10.5565/rev/isogloss.116.

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Compression of the vowel space area and reduced vowel dispersion have been observed as features of the California Vowel Shift (CVS, D’Onofrio, Pratt, and Van Hofwegen 2019). The present research provides empirical data to address the gap in the literature regarding the influence of regional sound change on contact languages, namely the influence of CVS on Bay Area Spanish. Analysis of word list tasks given to bilingual speakers of Bay Area Spanish and monolingual speakers of Mexican Spanish reveals a more compressed vowel space in Bay Area Spanish and patterns that mirror changes in progress i

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