Relevant bibliographies by topics / Signal processing – Digital techniques – Evaluation

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Signal processing – Digital techniques – Evaluation'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Signal processing – Digital techniques – Evaluation"

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Känsäkoski, M., O. Voutilainen, and T. Seppänen. "The Performance of near Infrared Analysers Can Be Improved by Digital Filtering Techniques." Journal of Near Infrared Spectroscopy 6, no. 1 (1998): 97–104. http://dx.doi.org/10.1255/jnirs.126.

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On-line near infrared (NIR) analysers are used widely for quantitative composition measurements in real-time process control systems. The accuracy and repeatability of the measurements are amongst the most important factors when evaluating the total performance of these analysers, but the lower detection limit is often limited by noise in the measurement signal. There are two major alternatives for reducing noise in an optical analyser: prevention of noise contamination and post-processing of the signal by filtering. In the second alternative, the measurement signal can be post-processed by digital filtering techniques, for example, to enhance the desired signal component. Although digital signal processing (DSP) technology offers many advantages for on-line process measurements, the behaviour of the signal must be understood thoroughly before a successful application of this technology can be developed. A digital filtering technique called matched filter was used in an experimental set-up. The performance of this filter was compared to an analog filtering of a pulse shaped signal. Experimental data were collected and filtered with a novel digital spectrometer which consists of a modulated light source, a spectrograph, a linear array detector and the analog and digital signal processing electronics needed to control and filter the signal. In this case the matched filter gave a clear improvement of 2.2–4.6 dB in the signal-to-noise ratio (SNR) relative to an analog lock-in amplifier. Among the other advantages afforded by digital filters are that they are programmable, easy to design, test and implement on a PC and do not suffer from drift. Also digital filters are extremely stable with respect to both time and temperature and versatile in their ability to process signals in a variety of ways.
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Santana-López, Zulema, Óscar Domínguez-Jaén, Jesús B. Alonso, and María Del Carmen Mato-Carrodeguas. "Voice re-education and its evaluation through digital signal processing: A case study." Loquens 4, no. 1 (2017): 040. http://dx.doi.org/10.3989/loquens.2017.040.

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Voice pathologies, caused either by functional dysphonia or organic lesions, or even by just an inappropriate emission of the voice, may lead to vocal abuse, affecting significantly the communication process. 
 
 The present study is based on the case of a single patient diagnosed with myasthenia gravis (Erb-Goldflam syndrome). In this case, this affection has caused, among other disruptions, a dysarthria. For its treatment, a technique for the education and re-education of the voice has been used, based on a resonator element: the cellophane screen. 
 
 This article shows the results obtained in the patient after applying a vocal re-education technique called the Cimardi Method: the Cellophane Screen, which is a pioneering technique in this field. Changes in the patient’s voice signal have been studied before and after the application of the Cimardi Method in different domains of study: time-frequency, spectrum, and cepstrum. Moreover, parameters for voice quality measurement, such as shimmer, jitter and harmonic-to-noise ratio (HNR), have been used to quantify the results obtained with the Cimardi Method. 
 
 Once the results were analyzed, it has been observed that the Cimardi Method helps to produce a more natural and free vocal emission, which is very useful as a rehabilitation therapy for those people presenting certain vocal disorders.
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TAKAHASHI, NOBUAKI, TSUYOSHI OTAKE, and MAMORU TANAKA. "NONLINEAR INTERPOLATIVE EFFECT OF FEEDBACK TEMPLATE FOR IMAGE PROCESSING BY DISCRETE-TIME CELLULAR NEURAL NETWORK." Journal of Circuits, Systems and Computers 12, no. 04 (2003): 505–18. http://dx.doi.org/10.1142/s0218126603001008.

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Recently a discrete-time cellular neural network (DT-CNN) is applied to many image processing applications such as compression and reconstruction, recognition and so on. Conventional image processing techniques such as the discrete cosine transformation (DCT) and wavelet transforms work as a simple filter and do not make good use of interpolative dynamics by the feedback A template, which is one of the significant characteristics of a cellular neural network (CNN). If CNN is applied to a filter by an only feedforward B template, one should make a model which consists of digital filters using high speed signal processing modules such as a high speed digital signal processor. This paper describes the nonlinear interpolative effect of the feedback A template, by showing the evaluation of image compression and reconstruction.
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Alexandre, Felipe A., Paulo R. Aguiar, Reinaldo Götz, Martin Antonio Aulestia Viera, Thiago Glissoi Lopes, and Eduardo Carlos Bianchi. "A Novel Ultrasound Technique Based on Piezoelectric Diaphragms Applied to Material Removal Monitoring in the Grinding Process." Sensors 19, no. 18 (2019): 3932. http://dx.doi.org/10.3390/s19183932.

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The interest of the scientific community for ultrasound techniques has increased in recent years due to its wide range of applications. A continuous effort of researchers and industries has been made in order to improve and increase the applicability of non-destructive evaluations (NDE). In this context, the monitoring of manufacturing processes, such as the grinding process, arises. This work proposes a novel technique of ultrasound monitoring (chirp-through-transmission) through low-cost piezoelectric diaphragms and digital signal processing. The proposed technique was applied to the monitoring of material removal during the grinding process. The technique is based on changes in ultrasonic waves when propagated through the material under study, with the difference that this technique does not use traditional parameters of ultrasonic techniques but digital signal processing (RMS and Counts). Furthermore, the novelty of the proposed technique is also the use of low-cost piezoelectric diaphragms in the emission and reception of ultrasonic waves, enabling the implementation of a low-cost monitoring system. The results show that the monitoring technique proposed in this work, when used in conjunction with the frequency band selection, is sensitive to the material removal in the grinding process and therefore presents an advance for monitoring the grinding processes.
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Walia, Ekta, Shailja Sharma, and Anu Suneja. "On the Analysis of Global and Local Robust Image Watermarking Using Zernike Moments." International Journal of Computer Vision and Image Processing 4, no. 1 (2014): 56–69. http://dx.doi.org/10.4018/ijcvip.2014010105.

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Digital Watermarking allows an individual to add some hidden copyright notices or other verification messages to digital media, where message is a group of bits describing the information pertaining to the signal or its author. For this purpose, two techniques viz. global watermarking and local watermarking can be used. In this paper, the performance of two feature based global and local watermarking techniques using Zernike Moments(ZMs) have been analyzed by evaluating their robustness against geometric, photometric and other signal processing attacks including rotation, cropping and noise. Experimental results have been provided in order to compare ZMs based global and local watermarking techniques for different types of attacks. Recommendations have been made based on the comparison of these techniques with other existing works.
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Mendhurwar, Kaustubha, Shivaji Patil, Harsh Sundani, Priyanka Aggarwal, and Vijay Devabhaktuni. "Edge-Detection in Noisy Images Using Independent Component Analysis." ISRN Signal Processing 2011 (April 10, 2011): 1–9. http://dx.doi.org/10.5402/2011/672353.

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Edges in a digital image provide important information about the objects contained within the image since they constitute boundaries between objects in the image. This paper proposes a new approach based on independent component analysis (ICA) for edge-detection in noisy images. The proposed approach works in two phases—the training phase and the edge-detection phase. The training phase is carried out only once to determine parameters for the ICA. Once calculated, these ICA parameters can be employed for edge-detection in any number of noisy images. The edge-detection phase deals with transitioning in and out of ICA domain and recovering the original image from a noisy image. Both gray scale as well as colored images corrupted with Gaussian noise are studied using the proposed approach, and remarkably improved results, compared to the existing edge-detection techniques, are achieved. Performance evaluation of the proposed approach using both subjective as well as objective methods is presented.
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Wahbi, Azeddine, Ahmed Roukhe, and Laamari Hlou. "Design and Evaluation of Modified Adaptive Block Normalized Algorithm for Acoustic Echo Cancellation in Hands-Free Communications." Network Protocols and Algorithms 7, no. 4 (2015): 63. http://dx.doi.org/10.5296/npa.v7i4.8159.

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The aim of this paper is to design and simulate an AEC in order to enhance the quality of speech disturbed by echo phenomenon. Therefore, in order to design the normalized adaptive AEC, we have used digital signal processing techniques, especially Simulink embedded functions. Effectiveness of the suggested AEC using adaptive normalized algorithm was verified using Matlab/Simulink software. Finally, our AEC has been tested by using ERLE criteria and the analysis results show more efficiency according to ITU-T recommendation G.168.
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Benyettou, Loutfi. "Performance Evaluation of A Multi-Sensor System Using Fixed Point DSP For Water Leak Detection." Indonesian Journal of Electrical Engineering and Computer Science 4, no. 3 (2016): 555. http://dx.doi.org/10.11591/ijeecs.v4.i3.pp555-560.

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<p>DSPs (Digital Processors Signal) are processors specifically designed for digital signals processing. The fixed-point DSPs are processors operating in integer arithmetic whose characteristics are often limited but not less powerful with respect to floating-point DSPs. In this article, it is a question of checking the performances provided by the fixed-point DSP, the TMS320C541. This one is used in a detection and remote locating system ensuring a control of water leaks on the pipes. The acoustic correlation technique used as means of detection of these leaks represents the key element of the suggested system. In fact the DSP which deals the acquisition and processing of the signals emanating from the leaks. The had aim consists in initially to confirm the choice of such a processor for such an application. A simulation study to evaluate its performances as regards of computational accuracy and computing speed is carried out. A floating-point DSP of last generation, more accurate and faster, taken as reference element, is used for this purpose.</p>
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Yildiz, Fikret, Ahmet Turan Özdemir, and Selman Uluışık. "Evaluation Performance of Ultrasonic Testing on Fruit Quality Determination." Journal of Food Quality 2019 (July 8, 2019): 1–7. http://dx.doi.org/10.1155/2019/6810865.

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There are several destructive and nondestructive methods for quality evaluation of agricultural products. Most of the employed traditional techniques are time-consuming and involve considerable degree of manual works. Destructive methods provide reasonable success rate of quality determination of fruits; however, they practically have many concerns about effectiveness, time, and cost. Therefore, developing portable, fast, and cost-effective techniques without harming fruits are desired for fruit quality evaluation. This work aims to develop a complete nondestructive quality evaluation system with (a) ultrasonic testing and (b) volume estimation by automatic machine vision techniques. The ultrasonic system consisted of a programmable bipolar remote pulser unit, a couple of piezoelectric probes for ultrasonic signal acquisitions as a transmitter and a receiver, an oscilloscope, and a computer. Visual appearance (size/volume) was determined using a machine vision system based on image processing techniques. Five different images of a fruit from different angles were captured by high-resolution digital cameras. Volume of the fruit was computed after horizontal and vertical distance of the fruit’s images captured. The calculated volume values by the computer vision system are validated with the theoretical values. Although nondestructive ultrasonic estimation and volume estimation by image processing methods are cheap, fast, and practical, the results obtained in our experiments concluded that these methods are not as reliable as claimed in the literature.
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Journal, Baghdad Science. "Multifocus Images Fusion Based On Homogenity and Edges Measures." Baghdad Science Journal 11, no. 2 (2014): 660–72. http://dx.doi.org/10.21123/bsj.11.2.660-672.

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Image fusion is one of the most important techniques in digital image processing, includes the development of software to make the integration of multiple sets of data for the same location; It is one of the new fields adopted in solve the problems of the digital image, and produce high-quality images contains on more information for the purposes of interpretation, classification, segmentation and compression, etc. In this research, there is a solution of problems faced by different digital images such as multi focus images through a simulation process using the camera to the work of the fuse of various digital images based on previously adopted fusion techniques such as arithmetic techniques (BT, CNT and MLT), statistical techniques (LMM, RVS and WT) and spatial techniques (HPFA, HFA and HFM). As these techniques have been developed and build programs using the language MATLAB (b 2010). In this work homogeneity criteria have been suggested for evaluation fused digital image's quality, especially fine details. This criterion is correlation criteria to guess homogeneity in different regions within the image by taking a number of blocks of different regions in the image and different sizes and work shifted blocks per pixel. As dependence was on traditional statistical criteria such as (mean, standard deviation, and signal to noise ratio, mutual information and spatial frequency) and compared with the suggested criteria to the work. The results showed that the evaluation process was effective and well because it took into measure the quality of the homogenous regions.
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Dissertations / Theses on the topic "Signal processing – Digital techniques – Evaluation"

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Zhu, Yong. "Digital signal and image processing techniques for ultrasonic nondestructive evaluation." Thesis, City University London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336431.

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Mauersberger, Gary S. "The design and hardware evaluation of an advanced 16-bit, low-power, high performance microcomputer system for digital signal processing." Thesis, Kansas State University, 1985. http://hdl.handle.net/2097/14006.

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Warneke, Andrew Travis. "An evaluation of the efficacy of digital real-time noise control techniques in evoking the musical effect." Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1020158.

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This study sought to determine whether or not it may be possible to evoke ‘the musical effect' – the emotional response perceived by music listeners – using white noise as a sound-source and real-time digital signal processing techniques. This information was considered to be valuable as in a world driven by technological progress the potential use of new or different technologies in creating music could lead to the development of new methods of – and tools for – composition and performance. More specifically this research asked the question 'what is music?' and investigated how humans – both trained musicians and untrained people – perceive it. The elements of music were investigated for their affective strengths and new fields of research explored for insights into emotion identification in music. Thereafter the focus shifted into the realm of Digital Signal Processing. Common operations and techniques for signal manipulation were investigated and an understanding of the field as a whole was sought. The culmination of these two separate, yet related, investigations was the design and implementation of a listening experiment conducted on adult subjects. They were asked to listen to various manipulated noise-signals and answer a questionnaire with regard to their perceptions of the audio material. The data from the listening experiment suggest that certain DSP techniques can evoke ‘the musical effect’. Various musical elements were represented via digital techniques and in many cases respondents reported perceptions which suggest that some effect was felt. The techniques implemented and musical elements represented were discussed, and possible applications for these techniques, both musical and non-musical, were explored. Areas for further research were discussed and include the implementation of even more DSP techniques, and also into garnering a more specific idea of the emotion perceived by respondents in response to the experiment material.
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Ingram, David. "An Evaluation of Harmonic Isolation Techniques for Three Phase Active Filtering." Thesis, University of Canterbury. Electrical and Computer Engineering, 1998. http://hdl.handle.net/10092/1260.

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Recent advances in power electronics have lead to the wide spread adoption of advanced power supplies and energy efficient devices. This has lead to increased levels of harmonic currents in power systems, degrading the performance of electrical machinery and interfering with telecommunication services. Active filters provide a solution to these problems by compensating for the distorted currents drawn by non-linear loads. Optimal methods for controlling these active filters have been determined by computer simulation and experimental implementation. Methods used for isolating the harmonic content of an unbalanced three phase load current were compared by computer simulations. A technique based on the Fast Fourier Transform (FFT) was developed as part of this work and shown to perform favourably. Notch Filtering, Sinusoidal Subtraction, Instantaneous Reactive Power Theory, Synchronous Reference Frame and Fast Fourier Transform methods were simulated. The methods shown to be suitable for compensation of three phase unbalanced loads were implemented in a Digital Signal Processor to evaluate true performance. These methods were Notch Filtering, Sinusoidal Subtraction, Fast Fourier Transform, and a High Pass Filter based method. A completely digital hysteresis current controller for a three phase active filter inverter has been developed and implemented with a Field Programmable Gate Array. This controller interfaces directly to a digital signal processor and is resistant to electromagnetic interference. Results from the experimental hardware verified that the active filter model used for simulation is accurate, and may be used for further development of harmonic isolation methods. A technique using notch filtering gives the best performance for steady loads, with the FFT based technique giving the most flexible operation for a range of load current characteristics. Novel use of the FFT based harmonic isolation technique allows selective cancellation of individual harmonics, with particular application to multiple shunt filters connected in parallel.
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Ide, Eric Nelson. "Evaluation of linear DC motor actuators for control of large space structures." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/45164.

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This thesis examines the use of a linear DC motor as a proof mass actuator for the control of large space structures. A model for the actuator, including the current and force compensation used, is derived. Because of the force compensation, the actuator is unstable when placed on a structure. Relative position feedback is used for actuator stabilization. This method of compensation couples the actuator to the mast in a feedback configuration. Three compensator designs are proposed. The physical limits of the LDCM place limits on the bandwidth of the closed loop actuator. <p>A ten mode finite element model of a flexible space structure was used in simulations to examine all aspects of the actuator's performance. The performance of the actuator is compared for the three compensator designs. The actuator bandwidth is seen to be important in the actuator's effectiveness. Increasing actuator bandwidth resulted in a saturation nonlinearity in the actuator. The excitation capability of the actuator was examined to determine the authority of the actuator. The damping of the mast modes was examined to determine the effect of the feedback configuration of the actuator/mast system. Root locus techniques were used to explain changes in the vibrational modes of the structure due to the actuator compensation. Disturbance analysis was performed to quantify the effect of corrupted measurements on the purity of force generated by the actuator.<br>Master of Science
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Befus, Chad R., and University of Lethbridge Faculty of Arts and Science. "Design and evaluation of dynamic feature-based segmentation on music." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Mathematics and Computer Science, c2010, 2010. http://hdl.handle.net/10133/2531.

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Segmentation is an indispensable step in the field of Music Information Retrieval (MIR). Segmentation refers to the splitting of a music piece into significant sections. Classically there has been a great deal of attention focused on various issues of segmentation, such as: perceptual segmentation vs. computational segmentation, segmentation evaluations, segmentation algorithms, etc. In this thesis, we conduct a series of perceptual experiments which challenge several of the traditional assumptions with respect to segmentation. Identifying some deficiencies in the current segmentation evaluation methods, we present a novel standardized evaluation approach which considers segmentation as a supportive step towards feature extraction in the MIR process. Furthermore, we propose a simple but effective segmentation algorithm and evaluate it utilizing our evaluation approach.<br>viii, 94 leaves : ill. ; 29 cm
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George, Kiranraj. "Design and Performance Evaluation of 1 Giga Hertz Wideband Digital Receiver." Wright State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=wright1183662240.

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Al-Nu'aimi, Abdallah Saleem Na. "Design, implementation and performance evaluation of robust and secure watermarking techniques for digital coloured images : designing new adaptive and robust imaging techniques for embedding and extracting 2D watermarks in the spatial and transform domain using imaging and signal processing techniques." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/4255.

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The tremendous spreading of multimedia via Internet motivates the watermarking as a new promising technology for copyright protection. This work is concerned with the design and development of novel algorithms in the spatial and transform domains for robust and secure watermarking of coloured images. These algorithms are adaptive, content-dependent and compatible with the Human Visual System (HVS). The host channels have the ability to host a large information payload. Furthermore, it has enough capacity to accept multiple watermarks. Abstract This work achieves several contributions in the area of coloured images watermarking. The most challenging problem is to get a robust algorithm that can overcome geometric attacks, which is solved in this work. Also, the search for a very secure algorithm has been achieved via using double secret keys. In addition, the problem of multiple claims of ownership is solved here using an unusual approach. Furthermore, this work differentiates between terms, which are usually confusing the researchers and lead to misunderstanding in most of the previous algorithms. One of the drawbacks in most of the previous algorithms is that the watermark consists of a small numbers of bits without strict meaning. This work overcomes this weakness III in using meaningful images and text with large amounts of data. Contrary to what is found in literature, this work shows that the green-channel is better than the blue-channel to host the watermarks. A more general and comprehensive test bed besides a broad band of performance evaluation is used to fairly judge the algorithms.
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Al-Nu'aimi, Abdallah S. N. A. "Design, Implementation and Performance Evaluation of Robust and Secure Watermarking Techniques for Digital Coloured Images. Designing new adaptive and robust imaging techniques for embedding and extracting 2D watermarks in the spatial and transform domain using imaging and signal processing techniques." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/4255.

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The tremendous spreading of multimedia via Internet motivates the watermarking as a new promising technology for copyright protection. This work is concerned with the design and development of novel algorithms in the spatial and transform domains for robust and secure watermarking of coloured images. These algorithms are adaptive, content-dependent and compatible with the Human Visual System (HVS). The host channels have the ability to host a large information payload. Furthermore, it has enough capacity to accept multiple watermarks. Abstract This work achieves several contributions in the area of coloured images watermarking. The most challenging problem is to get a robust algorithm that can overcome geometric attacks, which is solved in this work. Also, the search for a very secure algorithm has been achieved via using double secret keys. In addition, the problem of multiple claims of ownership is solved here using an unusual approach. Furthermore, this work differentiates between terms, which are usually confusing the researchers and lead to misunderstanding in most of the previous algorithms. One of the drawbacks in most of the previous algorithms is that the watermark consists of a small numbers of bits without strict meaning. This work overcomes this weakness III in using meaningful images and text with large amounts of data. Contrary to what is found in literature, this work shows that the green-channel is better than the blue-channel to host the watermarks. A more general and comprehensive test bed besides a broad band of performance evaluation is used to fairly judge the algorithms.
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Kwan, Ching Chung. "Digital signal processing techniques for on-board processing satellites." Thesis, University of Surrey, 1990. http://epubs.surrey.ac.uk/754893/.

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In on-board processing satellite systems in which FDMA/SCPC access schemes are employed. transmultiplexers are required for the frequency demultiplexing of the SCPC signals. Digital techniques for the implementation of the transmultiplexer for such application were examined in this project. The signal processing in the transmultiplexer operations involved many parameters which could be optimized in order to reduce the hardware complexity whilst satisfying the level of performance required of the system. An approach for the assessment of the relationship between the various parameters and the system performance was devised. which allowed hardware requirement of practical system specifications to be estimated. For systems involving signals of different bandwidths a more flexible implementation of the trans multiplexer is required and two computationally efficient methods. the DFT convolution and analysis/synthesis filter bank. were investigated. These methods gave greater flexibility to the input frequency plan of the transmultiplexer. at the expense of increased computational requirements. Filters were then designed to exploit specific properties of the flexible transmultiplexer methods. resulting in considerable improvement in their efficiencies. Hardware implementation of the flexible transmultiplexer was considered and an efficient multi-processor architecture in combination with parallel processing software algorithms for the signal processing operations were designed. Finally. an experimental model of the payload for a land-mobile satellite system proposal. T -SAT. was constructed using general-purpose digital signal processors and the merits of the on-board processing architecture was demonstrated.
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Books on the topic "Signal processing – Digital techniques – Evaluation"

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Digital signal processing. Prentice Hall, 1993.

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1943-, Mullis Clifford T., ed. Digital signal processing. Addison-Wesley, 1987.

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Maeda, Wataru. Digital signal processing. Prentice Hall, 1993.

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Digital signal processing. Delmar, 2000.

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Digital signal processing. J. Wiley, 2000.

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G, Manolakis Dimitris, ed. Digital signal processing. 4th ed. Pearson Prentice Hall, 2007.

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Lyons, Richard G. Understanding digital signal processing. 2nd ed. Prentice Hall PIR, 2004.

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Understanding digital signal processing. Prentice Hall PTR, 2001.

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Lyons, Richard G. Understanding digital signal processing. Addison Wesley Pub. Co., 1997.

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Digital signal processing demystified. HighText publications, 1997.

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Book chapters on the topic "Signal processing – Digital techniques – Evaluation"

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Simmer, K. Uwe, Joerg Bitzer, and Claude Marro. "Post-Filtering Techniques." In Digital Signal Processing. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04619-7_3.

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Jackson, Leland B. "FIR Filter Design Techniques." In Digital Filters and Signal Processing. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-2458-5_9.

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Jackson, Leland B. "FIR Filter Design Techniques." In Digital Filters and Signal Processing. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4615-3262-0_9.

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García-Mateo, C., and D. Docampo-Amoedo. "Modeling Techniques for Speech Coding: A Selected Survey." In Digital Signal Processing in Telecommunications. Springer London, 1996. http://dx.doi.org/10.1007/978-1-4471-1019-4_1.

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Rawat, Karun, Patrick Roblin, and Shiban Kishen Koul. "Digital Techniques for Broadband and Linearized Transmitters." In Analog Circuits and Signal Processing. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38866-9_5.

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Ennser, Karin, Slavisa Aleksic, Franco Curti, et al. "Optical Signal Processing Techniques for Signal Regeneration and Digital Logic." In Towards Digital Optical Networks. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01524-3_4.

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Karrenberg, Ulrich. "Digital Transmission Techniques III: Modulation." In An Interactive Multimedia Introduction to Signal Processing. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04949-5_14.

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Purkayastha, Basab Bijoy, and Kandarpa Kumar Sarma. "Modulation Techniques and Signal Processing." In A Digital Phase Locked Loop based Signal and Symbol Recovery System for Wireless Channel. Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2041-1_3.

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Aguado Bayón, L. E., and P. G. Farrell. "Effective Trellis Decoding Techniques for Block Codes." In Digital Signal Processing for Communication Systems. Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-6119-4_5.

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Basart, J. P., J. C. Moulder, S. F. Chuang, and B. Wang. "Signal Processing Techniques for Eddy-Current Data." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4791-4_57.

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Conference papers on the topic "Signal processing – Digital techniques – Evaluation"

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Adikari, A. M. T. S. B., S. Devadithya, A. R. S. T. Bandara, K. C. J. Dharmawardane, and K. C. B. Wavegedara. "Application of automatic speaker verification techniques for forensic evidence evaluation." In 2014 International Conference on Digital Signal Processing (DSP). IEEE, 2014. http://dx.doi.org/10.1109/icdsp.2014.6900703.

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Solanki, Dheerajkumar, Madhav Wagh, Kailas Yedle, and Yerramreddy Srinivasa Rao. "Evaluation of Image Processing Techniques on a Single Chip Digital Signal Processor." In 2018 Second International Conference on Electronics, Communication and Aerospace Technology (ICECA). IEEE, 2018. http://dx.doi.org/10.1109/iceca.2018.8474682.

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Raghavendra, R., Kiran B. Raja, Bian Yang, and Christoph Busch. "Comparative evaluation of super-resolution techniques for multi-face recognition using light-field camera." In 2013 18th International Conference on Digital Signal Processing (DSP). IEEE, 2013. http://dx.doi.org/10.1109/icdsp.2013.6622829.

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Pereira, Paulo, Cleudiane S. Santos, and Auteliano A. dos Santos. "Signal Processing Techniques for Ultrasonic Waves to Measure Stresses in Oil Pipelines." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62600.

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Ensuring the structural integrity of oil pipelines is vital to prevent environmental damage and economic losses. In that sense, it is important to know the magnitude of the stress in the pipe, which must be done using non-destructive techniques. Measuring stress using ultrasonic longitudinal critically refracted waves (LCR) has been applied to pipelines with very promising results. The technique is based on the acoustoelastic theory that relates speed variation of elastic waves traveling in the material with its state of strain. Nevertheless, the signals acquired from piezoelectric transducers in such application may show high levels of noise coming mainly from material sources (grain boundaries, irregularities). The noise makes the measurement of wave velocity difficult, resulting in imprecise evaluations of the stress in the pipeline. The aim of this study is to evaluate techniques for filtering digital signals of LCR waves propagating in an oil pipe fabricated with API 5L X70 steel. We analyzed the signal-to-noise ratio (SNR) of digitalized acquired signals in four circumstances: without treatment; signals treated with successive averages; treated with FIR (Finite Impulse Response) and IIR (Infinite Impulse Response) digital filters, and with the Discrete Wavelet Transform (DWT). The results show that the signals treated with DWT present better SNR compared to the other techniques.
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Shams, Reza, and Jacek Ilow. "Evaluating packet erasure recovery techniques for audio streaming." In 2014 9th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP). IEEE, 2014. http://dx.doi.org/10.1109/csndsp.2014.6923887.

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De Giorgi, Maria Grazia, Aldebara Sciolti, Stefano Campilongo, and Antonio Ficarella. "Ultra Lean Combustion Characterization in a Pilot-Scale Gas Turbine Burner Using Image Processing Techniques." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42195.

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The aim of the present investigation is the characterization of the behavior of a lean partially-premixed liquid fuel gas turbine near lean blowout limit. At this combustion regime the onset of instability will occur with negative impacts on combustion efficiency. The identification of the instability occurrence permits an efficient flame control adjusting the combustion parameters (as fuel or air mass flow, temperature, pressure, etc.) to stabilize the flame or designing opportunely flame control system. High-speed images of the flame under stable and near blowout condition were captured in conjunction with simultaneous optical data in order to better understand the phenomenology of the flame blowout process and the onset of instability. In particular the experimental characterization was performed through a High Speed Digital Camera, an Infrared camera and a Photomultiplier Tube (PMT) in association with the use of optical filter (OH*). The data collected with these instrumentations produce useful features for the development of an efficient tool for the flame control in industrial and aeronautical burners. The images acquired by the different cameras were processed considering the luminosity signal of each pixel and evaluating the frequency behavior, the variations of amplitude of the signals and some other descriptive parameters able to define the regime of the flame. Spectral analysis and Wavelet transform of pixel intensities of flame images were used and entropy and energy contents were evaluated. The spatial maps of the different spectral and statistical parameters were shown at different fuel/air equivalence ratio. The OH* emissions data measured by the PMT were processed and compared with the data obtained from the images processing.
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Bachert, B., G. Ludwig, B. Stoffel, and S. Baumgarten. "Comparison of Different Methods for the Evaluation of Cavitation Damaged Surfaces." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77368.

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The experimental data which will be presented in this paper are the results of the comparison between different methods for evaluating damaged surfaces by cavitation erosion. The different methods are partly working in the initial stage of cavitation erosion and partly at developed cavitation erosion, where mass loss occurs. The used test rig consists basically of a rotating disc with a diameter of 500 mm on which four holes are located. Each hole generates a cavitation zone while the disc is rotating. The test objects are material specimens made of copper. Copper was used as test material in respect to reasonable durations for the tests. The specimen can be implemented in the casing of the test rig directly across the rotating disc on the diameter where the holes are located. This rotating disc test rig generates a very aggressive type of cavitation, so that mass loss, of course depending on the tested material, will appear after relatively short durations. Also the initial stage of cavitation erosion can be observed. The used test rig is very interesting regarding the possibility to apply different measuring techniques to characterize the erosive aggressiveness of cavitation. These techniques are at first the so-called Pitcount-Method, which allows investigations of cavitation erosion in the initial stage. The second one is an acoustic method, which is based on a structure-borne noise sensor and a specially developed signal processing system. The third method is the measuring of mass loss of the material specimen after several time steps. With the help of a CCD-camera and special digital image processing software, images of different cavitation conditions were recorded. The information obtained from these images should serve as support for the evaluation of the other used methods. After the evaluation with the above mentioned methods, the specimens were evaluated with a special device which works with the help of a white light interferometer. With this evaluation method three-dimensional information can be obtained in respect to the actually eroded volume of the specimens. With this information the lost mass of the specimens could be calculated directly. Especially the comparison of the results obtained from the Pitcount-Method, which is a two-dimensional evaluation method, and the three-dimensional results of the white light interferometer is an important point of the work within this paper.
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Palmer, L. R., M. S. Al-Tarawneh, S. S. Dlay, and W. L. Woo. "Efficient fingerprint feature extraction: Algorithm and performance evaluation." In Digital Signal Processing (CSNDSP). IEEE, 2008. http://dx.doi.org/10.1109/csndsp.2008.4610735.

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Noriaki Kamiyama, Ryoichi Kawahara, and Haruhisa Hasegawa. "Performance evaluation of parallel download in streaming services." In Digital Signal Processing (CSNDSP). IEEE, 2008. http://dx.doi.org/10.1109/csndsp.2008.4610772.

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Kavanagh. "Signal processing techniques for improved digital tachometry." In Proceedings of the IEEE International Symposium on Industrial Electronics ISIE-02. IEEE, 2002. http://dx.doi.org/10.1109/isie.2002.1026342.

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Reports on the topic "Signal processing – Digital techniques – Evaluation"

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Beasley, Joseph N. Digital Signal Processing Techniques for Positioning of Off-Axis Solar Concentrators. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada410937.

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Clayton, Dwight A., Alan M. Barker, Hector J. Santos-Villalobos, Austin P. Albright, Kyle Hoegh, and Lev Khazanovich. Nondestructive Evaluation of Thick Concrete Using Advanced Signal Processing Techniques. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1221739.

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Clayton, Dwight A., Hector J. Santos-Villalobos, and Justin S. Baba. Evaluation of Advanced Signal Processing Techniques to Improve Detection and Identification of Embedded Defects. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1351761.

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