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Effect Of Spectral Shift And Compression Expansion On Speech Perception
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Book Synopsis Effect of Spectral Shift and Compression-Expansion on Speech Perception by : Ganesh Attigodu Chandrashekar
Download or read book Effect of Spectral Shift and Compression-Expansion on Speech Perception written by Ganesh Attigodu Chandrashekar and published by LAP Lambert Academic Publishing. This book was released on 2011-08 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on amplitude, temporal and spectral cues in speech show that speech recognition is only mildly affected when there in distortions in amplitude or temporal domains. But speech recognition is highly dependent on spectral cues. The present study aimed to find out the combined effects of the two spectral distortions, shift and compression-expansion, on speech recognition. Results from the present study reveal that speech recognition is affected when spectral distortions were present. Information from the present study on speech recognition in spectrally shifted and compressed-expanded conditions will helps in understanding the sensitivity of speech recognition to spectral manipulations. This will ultimately improve the fitting of an implant speech processor during cochlear implant.
Book Synopsis The Effects of Spectral Inversion on the Perception of Place of Articulation by : Kathryn Beadle
Download or read book The Effects of Spectral Inversion on the Perception of Place of Articulation written by Kathryn Beadle and published by . This book was released on 1970 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Role of Spectral Information in Foreign-accented Speech Perception by : Michelle Kapolowicz
Download or read book The Role of Spectral Information in Foreign-accented Speech Perception written by Michelle Kapolowicz and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Source signals, vocal tract resonances and articulatory movements encode talker-specific spectral information that allows for appropriate adjustment of a listener’s perceptual system to the acoustic characteristics of a particular talker. This implicit learning of talker-specific properties is known as talker normalization. Talker normalization requires prior experience and also structured knowledge about pronunciation variation across talkers that share the same native accent to guide perception. This process becomes difficult when the talker has an accent that is perceived as foreign. Although research suggests that listeners can adapt to foreign accents, the time-course and specificity of adaptation remain unclear, especially when listeners attend to speech produced by multiple alternating foreign-accented talkers. This dissertation focuses on the role of spectral cues in the perception of foreign-accented speech. While many factors contribute to the perception of foreign-accented speech, spectral cues are of particular interest because they play an important role in talker-specific phonetic recalibration in native speech to accommodate variations in vocal tract size across talkers. Through a series of experiments, we tested the hypothesis that listeners rely on talker-specific spectral cues when adapting to foreign-accented speech. We assessed the contribution of spectral resolution to the intelligibility of foreign-accented speech by varying the number of spectral channels in a tone vocoder. We also tested listeners’ abilities to discriminate between native- and foreign-accented speech to determine the effect of reduced spectral resolution on accent detection. Results showed a greater decrease in intelligibility when spectral resolution was reduced for foreign-accented speech compared to native-accented speech. Listeners also found it harder to detect a foreign accent with spectrally reduced speech. We extended these findings by investigating the effects of changing the talker from trial to trial, a manipulation that produces a reduction in intelligibility when compared to holding the talker constant within each block of trials. We hypothesized that limiting spectral resolution when listeners were exposed to multiple foreign-accented talkers would cause a further decrease in intelligibility. This prediction was confirmed, supporting the idea that detailed spectral resolution helps to maintain the intelligibility of foreign-accented speech when listeners are exposed to multiple interleaved talkers. Listeners were able to adapt with increased exposure if they heard a single foreign-accented talker, though not to the extent observed with unprocessed natural speech. Performance was higher for native-accented speech, with no difference between single- and multiple-talker conditions. Finally, we investigated how spectral shifting of foreign-accented speech would affect intelligibility by scaling the fundamental frequency and spectral envelope to simulate multiple talkers. Consistent with results for spectrally reduced speech, intelligibility was lower in the multiple-foreign-accented talker condition compared to the single-talker condition. Introducing frequency shifts produced a drop in intelligibility to levels observed in the multiple-talker condition. Results indicate that listeners depend on spectral cues when perceiving foreign-accented speech, and that spectral information is especially important when listening to speech spoken by different foreign-accented talkers. The results support a model of foreign-accented speech perception that relies on spectral cues to adjust to the deviations between foreign-accented and native speech.
Book Synopsis Speech Perception in Gated Noise by : Su-Hyun Jin
Download or read book Speech Perception in Gated Noise written by Su-Hyun Jin and published by . This book was released on 2004 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Compression on Speech Perception as Reflected by Attention and Intelligibility Measures by :
Download or read book The Effect of Compression on Speech Perception as Reflected by Attention and Intelligibility Measures written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to investigate the effect of amplitude compression on speech perception as reflected by attention and intelligibility. Previous investigations of the effects of compression on intelligibility have shown inconsistent results. Additional measures were investigated in the present work because percent-correct measures of intelligibility are not a complete indicator of compression effectiveness. Listening effort was considered as an additional parameter. Two dual-task paradigms were constructed to measure listening effort associated with amplitude compression. In the first experiment, an auditory word recognition task was employed as the primary task and a visual motor tracking task as the secondary task. Monosyllabic words were mixed with speech-shaped noise at a fixed signal-to-noise ratio and compressed using fast-acting wide dynamic range compression. Participants with normal hearing performed a word recognition and a pursuit rotor task in single and dual-task conditions. Results showed that compressed speech decreased visual motor tracking performance but not word recognition as compared to linearly processed speech. In the second experiment, an auditory word recognition task again served as the primary task, and a visual lexical decision task was employed as the secondary task. In the secondary task subjects were asked to decide whether an item on a computer screen was a word or not. The visual lexical decision task was expected to interfere more with the auditory word recognition task as compared to the visual motor tracking task of the first experiment because the lexical decision task shares more similarities in processing modes with the auditory task. However, the results showed that the lexical task did not interfere with the auditory task and did not reduce the dual-task performance. Several explanations for this finding are proposed. The use of dual-tasks to measure listenting effort can be affected by many factors. Additional research will reveal the particular dual-task methods that are best for evaluating compression.
Book Synopsis Sensation and Perception by : Bennett L. Schwartz
Download or read book Sensation and Perception written by Bennett L. Schwartz and published by SAGE Publications. This book was released on 2023-07-11 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rich in examples and applications to everyday life, Sensation and Perception, Third Edition is a cutting edge and highly readable account of modern sensation and perception from both a cognitive and neurocognitive perspective.
Book Synopsis Linguistics and Language Behavior Abstracts by :
Download or read book Linguistics and Language Behavior Abstracts written by and published by . This book was released on 2008-02 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Journal of the Acoustical Society of America by : Acoustical Society of America
Download or read book The Journal of the Acoustical Society of America written by Acoustical Society of America and published by . This book was released on 2006 with total page 1360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Speech Processing and Synthesis Toolboxes by : D. G. Childers
Download or read book Speech Processing and Synthesis Toolboxes written by D. G. Childers and published by John Wiley & Sons. This book was released on 1999-09-16 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this text is to teach speech analysis and synthesis through user-computer interaction. This text provides a means to study the features and properties of speech as a signal without having to record data and write software to analyze the data. An extensive speech database is provided on the accompanying CD-ROMs along with various software programs to analyze the data including a run-time version of MATLAB which allows the data to be used without purchasing MATLAB separately. The text also provides the theoretical basis of underlying the software algorithms used for speech analysis and synthesis. The goal of this approach is to strike a balance between theory and practice, thereby aiding the student's understanding of the basic concepts, assumptions, and limitations of the theory of speech analysis and synthesis.
Book Synopsis Journal of Speech and Hearing Research by :
Download or read book Journal of Speech and Hearing Research written by and published by . This book was released on 1961 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Speech Intelligibility and Speaker Recognition by : Mones E. Hawley
Download or read book Speech Intelligibility and Speaker Recognition written by Mones E. Hawley and published by . This book was released on 1977 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Bulletin written by and published by . This book was released on 1988 with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of the Radio Research Laboratories by :
Download or read book Journal of the Radio Research Laboratories written by and published by . This book was released on 1978 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1985 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compression: From Cochlea to Cochlear Implants by : Sid Bacon
Download or read book Compression: From Cochlea to Cochlear Implants written by Sid Bacon and published by Springer Science & Business Media. This book was released on 2003-10-01 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Springer Handbook of Auditory Research presents a series of comp- hensive and synthetic reviews of the fundamental topics in modern au- tory research.The volumes are aimed at all individuals with interests in hearing research including advanced graduate students, post-doctoral researchers, and clinical investigators.The volumes are intended to int- duce new investigators to important aspects of hearing science and to help established investigators to better understand the fundamental theories and data in ?elds of hearing that they may not normally follow closely. Each volume is intended to present a particular topic comprehensively, and each chapter will serve as a synthetic overview and guide to the lit- ature.As such the chapters present neither exhaustive data reviews nor original research that has not yet appeared in peer-reviewed journals.The volumes focus on topics that have developed a solid data and conceptual foundation rather than on those for which a literature is only beginning to develop. New research areas will be covered on a timely basis in the series as they begin to mature.
Download or read book Hearing Aids written by Gerald R. Popelka and published by Springer. This book was released on 2016-09-26 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume will serve as the first Handbook of its kind in the area of hearing aid research, often the least-defined, least-understood, part of the multi-disciplinary research process. Most scientific training is very advanced within the particular disciplines but provides little opportunity for systematic introduction to the issues and obstacles that prevent effective hearing-aid related research. This area has emerged as one of critical importance, as signified by a single specialized meeting (the International Hearing Aid Conference, IHCON) that brings together specialists from the disparate disciplines involved, including both university and industry researchers. Identification of the key steps that enable high-impact basic science to ultimately result in significant clinical advances that improve patient outcome is critical. This volume will provide an overview of current key issues in hearing aid research from the perspective of many different disciplines, not only from the perspective of the key funding agencies, but also from the scientists and clinicians who are currently involved in hearing aid research. It will offer insight into the experience, current technology and future technology that can help improve hearing aids, as scientists and clinicians typically have little or no formal training over the whole range of the individual disciplines that are relevant. The selection and coverage of topics insures that it will have lasting impact, well beyond immediate, short-term, or parochial concerns.
Book Synopsis Introduction to Digital Speech Processing by : Lawrence R. Rabiner
Download or read book Introduction to Digital Speech Processing written by Lawrence R. Rabiner and published by Now Publishers Inc. This book was released on 2007 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the reader with a practical introduction to the wide range of important concepts that comprise the field of digital speech processing. Students of speech research and researchers working in the field can use this as a reference guide.
