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Статті в журналах з теми "Audio-visual calibration":
1
McLaughlin, Anne C., Wendy A. Rogers, and Arthur D. Fisk. "Effectiveness of Audio and Visual Training Presentation Modes for Glucometer Calibration." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 46, no. 25 (September 2002): 2059–63. http://dx.doi.org/10.1177/154193120204602514.
Анотація:
This experiment investigated whether different presentation modes of instructional materials are differentially effective for older and younger adults learning to calibrate a glucometer. Glucometers are complex and require serial, sequential steps to calibrate them successfully. Some previous studies have failed to find a difference for older adults between instructions presented via audio and instructions presented with both audio and video (e.g. Stine, Wingfield & Myers, 1990); others have even found audio superior to video for presentation of instructions (Meline, 1976; Hale, 1998). In the current study, 12 older and 12 younger adults each received one type of training (audio or audio plus video) then were instructed to calibrate the glucometer using the information they received in the training. Overall, the presentation mode the groups received did affect their performance when later using the device, showing that for complex, sequential, spatial tasks, the addition of video to audio instructions improves performance for both younger and older adults.
2
Jacquemin, Christian, Rami Ajaj, Sylvain Le Beux, Christophe d’Alessandro, Markus Noisternig, Brian F. G. Katz, and Bertrand Planes. "Organ Augmented Reality." International Journal of Creative Interfaces and Computer Graphics 1, no. 2 (July 2010): 51–66. http://dx.doi.org/10.4018/jcicg.2010070105.
Анотація:
This paper discusses the Organ Augmented Reality (ORA) project, which considers an audio and visual augmentation of an historical church organ to enhance the understanding and perception of the instrument through intuitive and familiar mappings and outputs. ORA has been presented to public audiences at two immersive concerts. The visual part of the installation was based on a spectral analysis of the music. The visuals were projections of LED-bar VU-meters on the organ pipes. The audio part was an immersive periphonic sound field, created from the live capture of the organ sounds, so that the listeners had the impression of being inside the augmented instrument. The graphical architecture of the installation is based on acoustic analysis, mapping from sound levels to synchronous graphics through visual calibration, real-time multi-layer graphical composition and animation. The ORA project is a new approach to musical instrument augmentation that combines enhanced instrument legibility and enhanced artistic content.
3
Zhou, Yurui, and Guolong Zhao. "English Pronunciation Calibration Model Based on Multimodal Acoustic Sensor." Journal of Sensors 2022 (April 5, 2022): 1–10. http://dx.doi.org/10.1155/2022/2208653.
Анотація:
In recent years, with the increasing frequency of international exchanges, people have gradually realized that language is a tool of communication and communication, and language learning should attach importance to oral teaching. However, in traditional classrooms, one of the problems faced by oral teaching is the mismatch of the teacher-student ratio: a teacher has to deal with dozens of students, one-on-one oral teaching and pronunciation guidance is impossible, and it is also affected by the teachers and the environment constraints. Therefore, the research on how to efficiently automate pronunciation training is becoming more and more popular. Many phonemes in English have different facial visual features, especially vowels. Almost all of them can be distinguished by the roundness and tightness of the lips in appearance. In order to give full play to the role of lip features in oral pronunciation error detection, this paper proposes a multimodal feature fusion model based on lip angle features. The model interpolates the lip features constructed based on the opening and closing angles and combines audio and video in time series. Feature alignment and fusion and feature learning and classification are realized through the two-way LSTM SOFTMAX layer, and finally, end-to-end pronunciation error detection is realized through CTC. It is verified on the GRID audio and video corpus after phoneme conversion and the self-built multimodal test set. The experimental results show that the model has a higher false pronunciation recognition rate than the traditional single-modal acoustic error detection model. The increase in error detection rate is more obvious. Verification by the audio and video corpus with white noise was added, and the proposed model has better noise immunity than the traditional acoustic model.
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Zhang, Deng Pan, and Zhi Qiang Gao. "Design and Implementation of Controllable Noise Source." Applied Mechanics and Materials 329 (June 2013): 283–87. http://dx.doi.org/10.4028/www.scientific.net/amm.329.283.
Анотація:
To meet the characteristic diversity need of noise source in the product sound quality research, a parameter-controlled noise generation method is presented. The developed method is based on speech signal processing and programming. The system architecture of the controllable noise source is studied, and the implementation method of each module of the system is detailed. Modular design achieves data transfer and parameter control flexibly and conveniently between modules such as system calibration, basic acoustic signal production and conditioning, audio output control. Programming implement a controllable noise source platform based on the Visual C + + with friendly interface and reliable output.
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Loiret, Isabelle, Coralie Villa, Boris Dauriac, Xavier Bonnet, Noël Martinet, Jean Paysant, and Hélène Pillet. "Are wearable insoles a validated tool for quantifying transfemoral amputee gait asymmetry?" Prosthetics and Orthotics International 43, no. 5 (July 31, 2019): 492–99. http://dx.doi.org/10.1177/0309364619865814.
Анотація:
Background: Amputee gait is known to be asymmetrical, especially during loading of the lower limb. Monitoring asymmetry could be useful in quantifying patient performance during rehabilitation. Wearable insoles can provide normal ground reaction force asymmetry in real-life conditions. Objectives: To characterize the validity of Loadsol® insoles versus force plates in quantifying normal ground reaction force and gait asymmetry. To determine the influence walking speed has on loading asymmetry in transfemoral amputees. Study design: This is a prospective study. Methods: Six transfemoral amputees, wearing Loadsol® insoles, walked at three self-selected speeds on force plates. Validity was assessed by comparing normal ground reaction force data from the insoles and force plates. The Absolute Symmetry Index was used to calculate gait loading asymmetry at each speed. Results: Normalized root mean square errors for the normal ground reaction forces were 6.6% (standard deviation = 2.3%) and 8.9% (standard deviation = 3.8%); correlation coefficients were 0.91 and 0.95 for the prosthetic and intact limb, respectively. The mean error for Absolute Symmetry Index parameters ranged from −2.67% to 4.35%. Loading asymmetry increased with walking speed. Conclusion: This study quantified the validity of Loadsol® insoles in assessing loading asymmetry during gait in transfemoral amputees. The calibration protocol could be improved to better integrate it into a clinical setting. However, our results support the relevance of using such insoles during the clinical follow-up of transfemoral amputees. Clinical relevance This is the first study to validate Loadsol® insoles versus force plates and report on loading asymmetry during gait at three different speeds in transfemoral amputees. Loadsol® insoles, which provide visual and audio feedback, are clinically easy to use and could have beneficial application in the amputee’s rehabilitation and follow-up.
6
Susanti, Efa, M. Lutfi Firdaus, and Sumpono Sumpono. "Penjerapan Zat Warna Sintetis Menggunakan Karbon Aktif Kelapa Sawit Dan Pengembangannya Sebagai Bahan Ajar." PENDIPA Journal of Science Education 1, no. 1 (October 16, 2017): 12–18. http://dx.doi.org/10.33369/pendipa.1.1.12-18.
Анотація:
This study aims to: (1) explain the ability of the active carbon absorption of Palm Oil Palm as a dye adsorbent Reactive Red and Direct Green (2) determines the pH, contact time, and weight of the optimum adsorbent and the influence of temperature using activated carbon. Reactive Red and Direct Green dyestuffs. (3) to explain the influence of video media usage on the improvement of learning result and critical thinking ability of students in Chemistry class XI MIPA E at SMAN 2 Kota Bengkulu. The procedure in this study is the activation of activated carbon of palm oil and activated, activated carbon characterization using FTIR, Determination of maximum wavelength (?), Calibration curve creation, Adsorption of substance by activated carbon of palm oil: determining pH, contact time, adsorbent weight, , adsorption isotherms, Determination of temperature effect, Adsorption Isotherm Determination, Determination of adsorption kinetics, Applications on dyestuffs. The data were analyzed. The result of pH variation, variation of adsorbent weight, and contact time were made curve so that pH, adsorbent weight, concentration and optimum contact time were obtained using Excel program. Using ANAVA one way, followed by KR-20 test and one sample t test. The results showed that there were: reactive red optimum wavelength 496 nm, optimum pH 3, optimum time 40 min, absorbent weight 150 mg, maximum absorbency KAPKS 32,73 mg / gr and direct green optimum wavelength 613 nm, with optimum pH 5, optimum time 40 minutes, absorbent weight 150 mg, maximum absorbency KAPKS 32.825 mg / gr. there is an increase of chemistry learning outcomes during the enrichment hours or outside of class hours and critical thinking skills of grade XI IPA E SMAN2 Kota Bengkulu using audio-visual media with average pretest score of 75 and average post test score 82.27 with four criteria critical thinking skills are less critical by 26%, critical enough 43%, critical 23% and very critical at 8%.
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Susanti, Efa, M. Lutfi Firdaus, and Sumpono Sumpono. "PENJERAPAN ZAT WARNA SINTETIS MENGGUNAKAN KARBON AKTIF KELAPA SAWIT DAN PENGEMBANGANNYA SEBAGAI BAHAN AJAR." PENDIPA Journal of Science Education 1, no. 1 (October 16, 2017). http://dx.doi.org/10.33369/pendipa.v1i1.3007.
Анотація:
This study aims to: (1) explain the ability of the active carbon absorption of Palm Oil Palm as a dye adsorbent Reactive Red and Direct Green (2) determines the pH, contact time, and weight of the optimum adsorbent and the influence of temperature using activated carbon. Reactive Red and Direct Green dyestuffs. (3) to explain the influence of video media usage on the improvement of learning result and critical thinking ability of students in Chemistry class XI MIPA E at SMAN 2 Kota Bengkulu. The procedure in this study is the activation of activated carbon of palm oil and activated, activated carbon characterization using FTIR, Determination of maximum wavelength (?), Calibration curve creation, Adsorption of substance by activated carbon of palm oil: determining pH, contact time, adsorbent weight, , adsorption isotherms, Determination of temperature effect, Adsorption Isotherm Determination, Determination of adsorption kinetics, Applications on dyestuffs. The data were analyzed. The result of pH variation, variation of adsorbent weight, and contact time were made curve so that pH, adsorbent weight, concentration and optimum contact time were obtained using Excel program. Using ANAVA one way, followed by KR-20 test and one sample t test. The results showed that there were: reactive red optimum wavelength 496 nm, optimum pH 3, optimum time 40 min, absorbent weight 150 mg, maximum absorbency KAPKS 32,73 mg / gr and direct green optimum wavelength 613 nm, with optimum pH 5, optimum time 40 minutes, absorbent weight 150 mg, maximum absorbency KAPKS 32.825 mg / gr. there is an increase of chemistry learning outcomes during the enrichment hours or outside of class hours and critical thinking skills of grade XI IPA E SMAN2 Kota Bengkulu using audio-visual media with average pretest score of 75 and average post test score 82.27 with four criteria critical thinking skills are less critical by 26%, critical enough 43%, critical 23% and very critical at 8%.
8
Ujitoko, Yusuke, and Scinob Kuroki. "Sinusoidal Vibration Source Localization in Two-Dimensional Space Around the Hand." Frontiers in Psychology 13 (June 10, 2022). http://dx.doi.org/10.3389/fpsyg.2022.878397.
Анотація:
There are use cases where presenting spatial information via the tactile sense is useful (e.g., situations where visual and audio senses are not available). Conventional methods that directly attach a vibrotactile array to a user's body present spatial information such as direction by having users localize the vibration source from among the sources in the array. These methods suffer from problems such as heat generation of the actuator or the installation cost of the actuators in a limited space. A promising method of coping with these problems is to place the vibrotactile array at a distance from the body, instead of directly attaching it to the body, with the aim of presenting spatial information in the same way as the conventional method. The present study investigates the method's effectiveness by means of a psychophysical experiment. Specifically, we presented users with sinusoidal vibrations from remote vibrotactile arrays in the space around the hand and asked them to localize the source of the vibration. We conducted an experiment to investigate the localization ability by using two vibration frequencies (30 Hz as a low frequency and 230 Hz as a high frequency). We chose these two frequencies since they effectively activate two distinctive vibrotactile channels: the rapidly adapting afferent channel and the Pacinian channel. The experimental results showed that humans can recognize the direction of the vibration source, but not the distance, regardless of the source frequency. The accuracy of the direction recognition varied slightly according to the vibration source direction, and also according to the vibration frequency. This suggests that the calibration of stimulus direction is required in the case of both high and low frequencies for presenting direction accurately as intended. In addition, the accuracy variance of direction recognition increased as the source became farther away, and the degree of increase was especially large with the low-frequency source. This suggests that a high frequency is recommended for presenting accurate direction with low variance.
Дисертації з теми "Audio-visual calibration":
1
Khalidov, Vasil. "Modèles de mélanges conjugués pour la modélisation de la perception visuelle et auditive." Grenoble, 2010. http://www.theses.fr/2010GRENM064.
Анотація:
Dans cette thèse, nous nous intéressons à la modélisation de la perception audio-visuelle avec une tête robotique. Les problèmes associés, notamment la calibration audio-visuelle, la détection, la localisation et le suivi d'objets audio-visuels sont étudiés. Une approche spatio-temporelle de calibration d'une tête robotique est proposée, basée sur une mise en correspondance probabiliste multimodale des trajectoires. Le formalisme de modèles de mélange conjugué est introduit ainsi qu'une famille d'algorithmes d'optimisation efficaces pour effectuer le regroupement multimodal. Un cas particulier de cette famille d'algorithmes, notamment l'algorithme EM conjugue, est amélioré pour obtenir des propriétés théoriques intéressantes. Des méthodes de détection d'objets multimodaux et d'estimation du nombre d'objets sont développées et leurs propriétés théoriques sont étudiées. Enfin, la méthode de regroupement multimodal proposée est combinée avec des stratégies de détection et d'estimation du nombre d'objets ainsi qu'avec des techniques de suivi pour effectuer le suivi multimodal de plusieurs objets. La performance des méthodes est démontrée sur des données simulées et réelles issues d'une base de données de scénarios audio-visuels réalistes (base de données CAVA)In this thesis, the modelling of audio-visual perception with a head-like device is considered. The related problems, namely audio-visual calibration, audio-visual object detection, localization and tracking are addressed. A spatio-temporal approach to the head-like device calibration is proposed based on probabilistic multimodal trajectory matching. The formalism of conjugate mixture models is introduced along with a family of efficient optimization algorithms to perform multimodal clustering. One instance of this algorithm family, namely the conjugate expectation maximization (ConjEM) algorithm is further improved to gain attractive theoretical properties. The multimodal object detection and object number estimation methods are developed, their theoretical properties are discussed. Finally, the proposed multimodal clustering method is combined with the object detection and object number estimation strategies and known tracking techniques to perform multimodal multiobject tracking. The performance is demonstrated on simulated data and the database of realistic audio-visual scenarios (CAVA database)
Частини книг з теми "Audio-visual calibration":
1
Yeo, Rachel Hui-Min, Minyue Zhang, and Aung Phyo Wai Aung. "Evaluating the Effectiveness of Audio, Visual and Behavioural Calibrations on EEG-Based Relaxation Training." In IRC-SET 2020, 449–60. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9472-4_38.
2
Jacquemin, Christian, Rami Ajaj, Sylvain Le Beux, Christophe d’Alessandro, Markus Noisternig, Brian F. G. Katz, and Bertrand Planes. "Organ Augmented Reality." In Innovative Design and Creation of Visual Interfaces, 131–47. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-0285-4.ch010.
Анотація:
This paper discusses the Organ Augmented Reality (ORA) project, which considers an audio and visual augmentation of an historical church organ to enhance the understanding and perception of the instrument through intuitive and familiar mappings and outputs. ORA has been presented to public audiences at two immersive concerts. The visual part of the installation was based on a spectral analysis of the music. The visuals were projections of LED-bar VU-meters on the organ pipes. The audio part was an immersive periphonic sound field, created from the live capture of the organ sounds, so that the listeners had the impression of being inside the augmented instrument. The graphical architecture of the installation is based on acoustic analysis, mapping from sound levels to synchronous graphics through visual calibration, real-time multi-layer graphical composition and animation. The ORA project is a new approach to musical instrument augmentation that combines enhanced instrument legibility and enhanced artistic content.
Тези доповідей конференцій з теми "Audio-visual calibration":
1
Grondin, Francois, Hao Tang, and James Glass. "Audio-Visual Calibration with Polynomial Regression for 2-D Projection Using SVD-PHAT." In ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2020. http://dx.doi.org/10.1109/icassp40776.2020.9054690.
2
Beal, Jojic, and Attias. "A self-calibrating algorithm for speaker tracking based on audio-visual statistical models." In IEEE International Conference on Acoustics Speech and Signal Processing ICASSP-02. IEEE, 2002. http://dx.doi.org/10.1109/icassp.2002.1006163.
3
Beal, Matthew J., Nebojsa Jojic, and Hagai Attias. "A self-calibrating algorithm for speaker tracking based on audio-visual statistical models." In Proceedings of ICASSP '02. IEEE, 2002. http://dx.doi.org/10.1109/icassp.2002.5745023.