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Modelling Binaural Speech Intelligibility In Spatial Noise And Reverberation For Normal Hearing And Hearing Impaired Subjects
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Book Synopsis Modelling binaural speech intelligibility in spatial noise and reverberation for normal-hearing and hearing-impaired subjects by : Rainer Beutelmann
Download or read book Modelling binaural speech intelligibility in spatial noise and reverberation for normal-hearing and hearing-impaired subjects written by Rainer Beutelmann and published by . This book was released on 2008 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Binaural Speech Recognition of the Elderly in Noise and Reverberation by : Lisa Anne Roberts
Download or read book Binaural Speech Recognition of the Elderly in Noise and Reverberation written by Lisa Anne Roberts and published by . This book was released on 1990 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Technology of Binaural Listening by : Jens Blauert
Download or read book The Technology of Binaural Listening written by Jens Blauert and published by Springer Science & Business Media. This book was released on 2013-06-07 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the application of advanced models of the human binaural hearing system in modern technology, among others, in the following areas: binaural analysis of aural scenes, binaural de-reverberation, binaural quality assessment of audio channels, loudspeakers and performance spaces, binaural perceptual coding, binaural processing in hearing aids and cochlea implants, binaural systems in robots, binaural/tactile human-machine interfaces, speech-intelligibility prediction in rooms and/or multi-speaker scenarios. An introduction to binaural modeling and an outlook to the future are provided. Further, the book features a MATLAB toolbox to enable readers to construct their own dedicated binaural models on demand.
Book Synopsis Binaural Hearing by : Ruth Y. Litovsky
Download or read book Binaural Hearing written by Ruth Y. Litovsky and published by Springer Nature. This book was released on 2021-03-01 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of Binaural Hearing involves studies of auditory perception, physiology, and modeling, including normal and abnormal aspects of the system. Binaural processes involved in both sound localization and speech unmasking have gained a broader interest and have received growing attention in the published literature. The field has undergone some significant changes. There is now a much richer understanding of the many aspects that comprising binaural processing, its role in development, and in success and limitations of hearing-aid and cochlear-implant users. The goal of this volume is to provide an up-to-date reference on the developments and novel ideas in the field of binaural hearing. The primary readership for the volume is expected to be academic specialists in the diverse fields that connect with psychoacoustics, neuroscience, engineering, psychology, audiology, and cochlear implants. This volume will serve as an important resource by way of introduction to the field, in particular for graduate students, postdoctoral scholars, the faculty who train them and clinicians.
Book Synopsis Binaural and Spatial Hearing in Real and Virtual Environments by : Robert Gilkey
Download or read book Binaural and Spatial Hearing in Real and Virtual Environments written by Robert Gilkey and published by Psychology Press. This book was released on 2014-02-25 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current popular and scientific interest in virtual environments has provided a new impetus for investigating binaural and spatial hearing. However, the many intriguing phenomena of spatial hearing have long made it an exciting area of scientific inquiry. Psychophysical and physiological investigations of spatial hearing seem to be converging on common explanations of underlying mechanisms. These understandings have in turn been incorporated into sophisticated yet mathematically tractable models of binaural interaction. Thus, binaural and spatial hearing is one of the few areas in which professionals are soon likely to find adequate physiological explanations of complex psychological phenomena that can be reasonably and usefully approximated by mathematical and physical models. This volume grew out of the Conference on Binaural and Spatial Hearing, a four-day event held at Wright-Patterson Air Force Base in response to rapid developments in binaural and spatial hearing research and technology. Meant to be more than just a proceedings, it presents chapters that are longer than typical proceedings papers and contain considerably more review material, including extensive bibliographies in many cases. Arranged into topical sections, the chapters represent major thrusts in the recent literature. The authors of the first chapter in each section have been encouraged to take a broad perspective and review the current state of literature. Subsequent chapters in each section tend to be somewhat more narrowly focused, and often emphasize the authors' own work. Thus, each section provides overview, background, and current research on a particular topic. This book is significant in that it reviews the important work during the past 10 to 15 years, and provides greater breadth and depth than most of the previous works.
Book Synopsis A Binaural Model Predicting The Effect of Hearing Impairment and Noise Level on Speech Intelligibility by : Thibault Vicente
Download or read book A Binaural Model Predicting The Effect of Hearing Impairment and Noise Level on Speech Intelligibility written by Thibault Vicente and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dual-microphone and Binaural Noise Reduction Techniques for Improved Speech Intelligibility by Hearing Aid Users by : Nima Yousefian Jazi
Download or read book Dual-microphone and Binaural Noise Reduction Techniques for Improved Speech Intelligibility by Hearing Aid Users written by Nima Yousefian Jazi and published by . This book was released on 2013 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatial filtering and directional discrimination has been shown to be an effective pre-processing approach for noise reduction in microphone array systems. In dual-microphone hearing aids, fixed and adaptive beamforming techniques are the most common solutions for enhancing the desired speech and rejecting unwanted signals captured by the microphones. In fact, beamformers are widely utilized in systems where spatial properties of target source (usually in front of the listener) is assumed to be known. In this dissertation, some dual-microphone coherence-based speech enhancement techniques applicable to hearing aids are proposed. All proposed algorithms operate in the frequency domain and (like traditional beamforming techniques) are purely based on the spatial properties of the desired speech source and does not require any knowledge of noise statistics for calculating the noise reduction filter. This benefit gives our algorithms the ability to address adverse noise conditions, such as situations where interfering talker(s) speaks simultaneously with the target speaker. In such cases, the (adaptive) beamformers lose their effectiveness in suppressing interference, since the noise channel (reference) cannot be built and updated accordingly. This difference is the main advantage of the proposed techniques in the dissertation over traditional adaptive beamformers. Furthermore, since the suggested algorithms are independent of noise estimation, they offer significant improvement in scenarios that the power level of interfering sources are much more than that of target speech. The dissertation also shows the premise behind the proposed algorithms can be extended and employed to binaural hearing aids. The main purpose of the investigated techniques is to enhance the intelligibility level of speech, measured through subjective listening tests with normal hearing and cochlear implant listeners. However, the improvement in quality of the output speech achieved by the algorithms are also presented to show that the proposed methods can be potential candidates for future use in commercial hearing aids and cochlear implant devices.
Book Synopsis Modelling of Binaural Speech Intelligibility for Hearing Impaired Listeners Using Intrusive and Non-Intrusive Binaural Speech Intelligibility Models by : Christopher Hauth
Download or read book Modelling of Binaural Speech Intelligibility for Hearing Impaired Listeners Using Intrusive and Non-Intrusive Binaural Speech Intelligibility Models written by Christopher Hauth and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation and Evaluation of Binaural Models Applied to Speech Perception in Complex Environments by : Rui Wan
Download or read book Investigation and Evaluation of Binaural Models Applied to Speech Perception in Complex Environments written by Rui Wan and published by . This book was released on 2011 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The auditory system provides one of the most robust pathways human use in everyday life for speech communication. Within the auditory system, the function of the binaural processing is especially important for human listeners to better localize and perceive sounds. Past research in the literature has shown that the performance of normal hearing listeners is more robust than the existing automatic speech recognition machines in the presence of multiple interfering sounds. However, there is little understanding of the factors that are important for human speech perception in these environments. This thesis addresses the problem of speech intelligibility in complex environments by investigating the functionality of binaural processing in these environments. Two types of classical binaural processing models [Equalization-Cancellation (EC) model and Inter- aural Difference (ID) model] are extended and applied to speech perception in complex environments. The complex environments include multiple and different types of interfering sounds masking the frontal speech target from different spatial locations. The model outputs are evaluated using both the computational speech intelligibility measures and the psychoacoustic measures. The performance of the model is compared with existing speech intelligibility data. The comparison is followed by a discussion of how well these binaural models can account for binaural advantages in speech perception and what are the factors that are important in speech perception tasks. Results of the current study show that (1) both of the models can successfully predict speech intelligibility data in the presence of different noise maskers (either modulated or not); (2) both of the models fail to capture the informational masking component when the maskers are speech, especially in the co-located condition; (3) different factors involved in speech perception are identified, such as signal-to-noise ratio, gap-listening, and information masking and; and (4) Equalization-Cancellation models are able to generate diotic outputs that have equivalent intelligibility as the original dichotic stimuli while the Interaural Difference model can not, due to the sparseness of the mask in the time-frequency domain.
Book Synopsis Binaural Speech Intelligibility Prediction and Nonlinear Hearing Devices by : Nicolas Ellaham
Download or read book Binaural Speech Intelligibility Prediction and Nonlinear Hearing Devices written by Nicolas Ellaham and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A new objective measurement system to predict speech intelligibility in binaural listening conditions is proposed for use with nonlinear hearing devices. Digital processing inside such devices often involves nonlinear operations such as clipping, compression, and noise reduction algorithms. Standard objective measures such as the Articulation Indeix (AI), the Speech Intelligibility Index (SII) and the Speech Transmission Index (STI) have been developed for monaural listening. Binaural extensions of these measures have been proposed in the literature, essentially consisting of a binaural pre-processing stage followed by monaural intelligibility prediction using the better ear or the binaurally enhanced signal. In this work, a three-stage extension of the binaural SII approach is proposed that deals with nonlinear acoustic input signals. The reference-based model operates as follows: (1) a stage to deal with nonlinear processing based on a signal-separation model to recover estimates of speech, noise and distortion signals at the output of hearing devices; (2) a binaural processing stage using the Equalization-Cancellation (EC) model; and (3) a stage for intelligibility prediction using the SII or the short-time Extended SII (ESII). Multiple versions of the model have been developed and tested for use with hearing devices. A software simulator is used to perform hearing-device processing under various binaural listening conditions. Details of the modeling procedure are discussed along with an experimental framework for collecting subjective intelligibility data. In the absence of hearing-device processing, the model successfully predicts speech intelligibility in all spatial configurations considered. Varying levels of success were obtained using two simple distortion modeling approaches with different distortion mechanisms. Future refinements to the model are proposed based on the results discussed in this work.
Book Synopsis Modelling the Cocktail Party by : Sam Jelfs
Download or read book Modelling the Cocktail Party written by Sam Jelfs and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We often listen to speech in an imperfect environment, with noise and reverberation; there will be voices around us, in complex acoustics. In this "cocktail-party" situation (Cherry 1953) listeners are helped by two binaural processes to segregate the desired voice from the competing noise: Better-Ear listening (BE) and Binaural Unmasking (BU). The aim of this thesis was to develop a model capable of efficiently predicting the benefits of BE and BU from Binaural Room Impulse Responses (BRIR). The developed model is a computationally efficient version of that created by Lavandier & Culling (2010) that predicts speech reception thresholds which include the benefit of binaural-unmasking, as explained by Equalization-Cancellation theory (Durlach 1963, 1972), and the benefit of better-ear listening, through Target-to-Interferer ratio analysis. The model accurately predicted a number of appropriate data sets from the literature that measure speech reception thresholds as a function of target and interferer source locations. Application of the model to a number of novel situations allowed environmental factors affecting intelligibility to be predicted and explored. In most situations, the effect of reverberation is to reduce the level of BE and BU, except when the listener is close to the interfering source, but this is when the benefits are needed the most. Depending on the spatial separation and source distances, the inclusion of multiple interferers again reduces the benefits in the majority of situations. To examine the benefits of head orientation a number of configurations were tested, whilst rotating the listener relative to the sound field. Benefits exceeding 12 dB can be achieved through modest rotations, particularly showing the benefits of BE. According to the model, the current literature on the benefits of bilateral cochlear implantation has underestimated that benefit by employing sub-optimal spatial configurations; using optimum orientations the model predicts an extra 6 dB of benefit being available to the listener. In a simulated restaurant situation, the model predicts that orientation of a table can affect the ability of a listener by up to 5 dB.
Book Synopsis A Binaural Model for Predicting Speech Intelligibility in Enclosed Spaces Using Noise and Reverberation Suppression Mechanisms by : Vanessa Li
Download or read book A Binaural Model for Predicting Speech Intelligibility in Enclosed Spaces Using Noise and Reverberation Suppression Mechanisms written by Vanessa Li and published by . This book was released on 2011 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Reverberation Context on Spatial Hearing Performance of Normally Hearing Listeners by : Renita Elizabeth Sudirga
Download or read book Effect of Reverberation Context on Spatial Hearing Performance of Normally Hearing Listeners written by Renita Elizabeth Sudirga and published by . This book was released on 2014 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous studies provide evidence that listening experience in a particular reverberant environment improves speech intelligibility and localization performance in that environment. Such studies, however, are few, and there is little knowledge of the underlying mechanisms. The experiments presented in this thesis explored the effect of reverberation context, in particular, the similarity in interaural coherence within a context, on listeners' performance in sound localization, speech perception in a spatially separated noise, spatial release from speech-on-speech masking, and target location identification in a multi-talker configuration. All experiments were conducted in simulated reverberant environments created with a loudspeaker array in an anechoic chamber. The reflections comprising the reverberation in each environment had the same temporal and relative amplitude patterns, but varied in their lateral spread, which affected the interaural coherence of reverberated stimuli. The effect of reverberation context was examined by comparing performance in two reverberation contexts, mixed and fixed. In the mixed context, the reverberation environment applied to each stimulus varied trial-by-trial, whereas in the fixed context, the reverberation environment was held constant within a block of trials. In Experiment I (absolute judgement of sound location), variability in azimuth judgments was lower in the fixed than in the mixed context, suggesting that sound localization depended not only on the cues presented in isolated trials. In Experiment II, the intelligibility of speech in a spatially separated noise was found to be similar in both reverberation contexts. That result contrasts with other studies, and suggests that the fixed context did not assist listeners in compensating for degraded interaural coherence. In Experiment III, speech intelligibility in multi-talker configurations was found to be better in the fixed context, but only when the talkers were separated. That is, the fixed context improved spatial release from masking. However, in the presence of speech maskers, consistent reverberation did not improve the localizability of the target talker in a three-alternative location-identification task. Those results suggest that in multi-talker situations, consistent coherence may not improve target localizability, but rather that consistent context may facilitate the buildup of spatial selective attention.
Book Synopsis Journal of the Audio Engineering Society by : Audio Engineering Society
Download or read book Journal of the Audio Engineering Society written by Audio Engineering Society and published by . This book was released on 2009 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Directory of members" published as pt. 2 of Apr. 1954- issue.
Book Synopsis The Auditory System at the Cocktail Party by : John C. Middlebrooks
Download or read book The Auditory System at the Cocktail Party written by John C. Middlebrooks and published by Springer. This book was released on 2018-07-21 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Auditory System at the Cocktail Party is a rather whimsical title that points to the very serious challenge faced by listeners in most everyday environments: how to hear out sounds of interest amid a cacophony of competing sounds. The volume presents the mechanisms for bottom-up object formation and top-down object selection that the auditory system employs to meet that challenge. Ear and Brain Mechanisms for Parsing the Auditory Scene by John C. Middlebrooks and Jonathan Z. Simon Auditory Object Formation and Selection by Barbara Shinn-Cunningham, Virginia Best, and Adrian K. C. Lee Energetic Masking and Masking Release by John F. Culling and Michael A. Stone Informational Masking in Speech Recognition by Gerald Kidd, Jr. and H. Steven Colburn Modeling the Cocktail Party Problem by Mounya Elhilali Spatial Stream Segregation by John C. Middlebrooks Human Auditory Neuroscience and the Cocktail Party Problem by Jonathan Z. Simon Infants and Children at the Cocktail Party by Lynne Werner Older Adults at the Cocktail Party by M. Kathleen Pichora-Fuller, Claude Alain, and Bruce A. Schneider Hearing with Cochlear Implants and Hearing Aids in Complex Auditory Scenes by Ruth Y. Litovsky, Matthew J. Goupell, Sara M. Misurelli, and Alan Kan About the Editors: John C. Middlebrooks is a Professor in the Department of Otolaryngology at the University of California, Irvine, with affiliate appointments in the Department of Neurobiology and Behavior, the Department of Cognitive Sciences, and the Department of Biomedical Engineering. Jonathan Z. Simon is a Professor at the University of Maryland, College Park, with joint appointments in the Department of Electrical and Computer Engineering, the Department of Biology, and the Institute for Systems Research. Arthur N. Popper is Professor Emeritus and Research Professor in the Department of Biology at the University of Maryland, College Park. Richard R. Fay is Distinguished Research Professor of Psychology at Loyola University, Chicago. About the Series: The Springer Handbook of Auditory Research presents a series of synthetic reviews of fundamental topics dealing with auditory systems. Each volume is independent and authoritative; taken as a set, this series is the definitive resource in the field.
Book Synopsis Evaluation of the Sparse Coding Shrinkage Noise Reduction Algorithm for the Hearing Impaired by : Jinqiu Sang
Download or read book Evaluation of the Sparse Coding Shrinkage Noise Reduction Algorithm for the Hearing Impaired written by Jinqiu Sang and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Although there are numerous single-channel noise reduction strategies to improve speech perception in a noisy environment, most of them can only improve speech quality but not improve speech intelligibility for normal hearing (NH) or hearing impaired (HI) listeners. Exceptions that can improve speech intelligibility currently are only those that require a priori statistics of speech or noise. Most of the noise reduction algorithms in hearing aids are adopted directly from the algorithms for NH listeners without taking into account of the hearing loss factors within HI listeners. HI listeners suffer more in speech intelligibility than NH listeners in the same noisy environment. Further study of monaural noise reduction algorithms for HI listeners is required. The motivation is to adapt a model-based approach in contrast to the conventional Wiener filtering approach. The model-based algorithm called sparse coding shrinkage (SCS) was proposed to extract key speech information from noisy speech. The SCS algorithm was evaluated by comparison with another state-of-the-art Wiener filtering approach through speech intelligibility and quality tests using 9 NH and 9 HI listeners. The SCS algorithm matched the performance of the Wiener filtering algorithm in speech intelligibility and speech quality. Both algorithms showed some intelligibility improvements for HI listeners but not at all for NH listeners. The algorithms improved speech quality for both HI and NH listeners. Additionally, a physiologically-inspired hearing loss simulation (HLS) model was developed to characterize hearing loss factors and simulate hearing loss consequences. A methodology was proposed to evaluate signal processing strategies for HI listeners with the proposed HLS model and NH subjects. The corresponding experiment was performed by asking NH subjects to listen to unprocessed/enhanced speech with the HLS model. Some of the effects of the algorithms seen in HI listeners are reproduced, at least qualitatively, by using the HLS model with NH listeners. Conclusions: The model-based algorithm SCS is promising for improving performance in stationary noise although no clear difference was seen in the performance of SCS and a competitive Wiener filtering algorithm. Fluctuating noise is more difficult to reduce compared to stationary noise. Noise reduction algorithms may perform better at higher input signal-to-noise ratios (SNRs) where HI listeners can get benefit but where NH listeners already reach ceiling performance. The proposed HLS model can save time and cost when evaluating noise reduction algorithms for HI listeners.
Book Synopsis Binaural Model-based Speech Intelligibility Enhancement and Assessment in Hearing Aids by : Anton Schlesinger
Download or read book Binaural Model-based Speech Intelligibility Enhancement and Assessment in Hearing Aids written by Anton Schlesinger and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
