Signal Processing in Auditory Neuroscience

Signal Processing in Auditory Neuroscience

Temporal and Spatial Features of Sound and Speech

1st Edition - May 22, 2018

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  • Author: Yoichi Ando
  • Paperback ISBN: 9780128159385
  • eBook ISBN: 9780128159392

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Description

Signal Processing in Auditory Neuroscience: Temporal and Spatial Features of Sound and Speech discusses how the physical attributes of different sounds manifest in neural signals and how to tease-apart their different influences. It includes EEG/MEG as additional variables to be considered when studying neural mechanisms of auditory processing in general, specifically in speech.

Key Features

  • Focuses on signal processing in human auditory-neuroscience
  • Contains information that will be useful to researchers using a MEG/EEG recording of brain activity to study neural mechanisms of auditory processing and speech
  • Gives an important overview and methodological background for techniques that are useful in human auditory-neuroscience

Readership

Researchers in auditory neuroscience, speech, acoustics and engineering

Table of Contents

  • Chapter 1. Introduction
    1.1 Auditory Temporal and Spatial Factors 
    1.2 Correlation Auditory Model for Temporal and Spatial   Information Processin
    1.3 Theory of Subjective Preference for Sound Fields
    1.4 Design Studies for Preferred Hearing Aid 
    Chapter 2 Human Hearing System
    2.1 Physical Systems of Human Ear
    2.1.1 Head, Pinna and External Auditory Canal
    2.1.2 Eardrum and Bone Chain
    2.1.3 The Cochlea
    2.2 Auditory Brainstem Responses (ABR) in Auditory Pathways
    2.2.1 ABR Recording and Flow of Neural Signals
    2.2.2 ABR Amplitudes in Relation to IACC
    2.2.3 Remarks
    2.3 Central Auditory Signal Processing Model
    Chapter 3. Analyses of Sound Signals and Sound Fields
    3.1 Analyses of a Source Signal
    3.1.1 Autocorrelation Function (ACF) of a Sound Source
    3.1.2 Running ACF of a Source Signal
    3.2 Vocal Source Signals
    3.3 Auditory-Temporal Window Recommended
    Chapter 4. Orthogonal Factors and Simulation of the Sound Field in an Enclosure
    4.1. Sound Transmission from a Point Source to Ear Entrances in a Room
    4.2 Orthogonal Factors of the Sound Field
    4.2.1 Temporal Factors of the Sound Field
    4.2.2 Spatial Factors of the Sound Field
    4.2.3 Auditory Time Window for the IACF Processing
    4.3 Simulation of Sound Localization
    4.4 Simulation of the Reverberant Sound Field
    Chapter 5. Magneto-Encephalographic (MEG) Evoked Responses to ACF/IACF Factors
    5.1 MEG Responses to ACF Factors
    5.1.1 Factor of the sound pressure level (SPL)
    5.1.2 Factors 1 and 1
    5.1.3 Factor e
    5.2 MEG Responses to IACF Factors
    5.2.1 Factor IACC
    5.2.2 Factor IACC
    Chapter 6. Neural Evidences Related to Subjective Preference
    6.1 Slow-Vertex Responses (SVR) Corresponding to Subjective Preference            
    6.1.1 Neuronal Response Correlates in Change of  t1 
    6.1.2 Hemispheric Response Difference in Change of the LL and the IACC
    6.1.3 Differences in Response Latency Corresponding to Subjective Preference
    6.2 Response on Electro-Encephalogram (EEG) and Magneto-Encephalographic (MEG) Corresponding to Subjective Preferenc
    6.2.1 EEG in Response to Change of  t1
    6.2.2 MEG in Response to Change of  t
    6.2.3 EEG in Response to Change of Tsu
    6.2.4 EEG in Response to Change of the IACC
    6.3 Specialization of Cerebral Hemispheres for Temporal and Spatial Factors
    Chapter 7. Temporal- and Spatial-Primary Percepts of the Sound and the Sound Field
    7.1 Temporal Percepts in Relation to the Temporal Factors of the Sound
    7.1.1 Pitches of Complex Tones
    7.1.2 Frequency Limits of the ACF Mode
    7.1.3 Loudness of Sharply Filtered Noise
    7.1.4 Duration Sensation
    7.1.5 Timbre of an Electric Guitar Sound with Distortion
    Experiment A 
    Experiment B
    7.2. Spatial Percepts in Relation to the Spatial Factors of the Sound Field
    7.2.1 Localization of a Sound Source in the Horizontal-and Median-Plane
    7.2.2 Cues of Localization in the Median Plane
    7.2.3 Learning Effects on Monaural Localization with Normal Hearing Listeners   
    A. Experimental Procedure
    B. Experimental Results
    C. Discussion
    D. Conclusions
    A. 
    7.2.4 Age Effects of Monaurally Impaired Listeners on Localization
    7.2.5 Apparent Source Width (ASW)
    A. Experiment: ASW in relation to WIACC and IACC
    B. Experiment: ASW in relation to WIACC and LL
    C. ASW in relation to all of three factors, WIACC, LL and WIACC
    7.2.6 Subjective Diffuseness
    Chapter 8. Subjective Preference of the Sound Field
    8.1 Sound Fields with a Single Reflection and Multiple Reflections
    8.1.1 Preferred Delay Time of a Single Reflection
    8.1.2 Preferred Horizontal Direction of a Single Reflection to a Listener
    8.2 Sound Fields with Early Reflections and the Subsequent Reverberation
    8.3 Optimal Conditions Maximizing Subjective Preference
    8.3.1 Listening Level (LL)
    8.3.2 Early Reflections After the Direct Sound (t1) 
    8.3.3 Subsequent Reverberation Time after the Early Reflections (Tsub)
    8.3.4 Magnitude of the Inter-Aural Crosscorrelation Function (IACC) 
    8.4 Theory of Subjective Preference for the Sound Field
    8.5 Seat Selection Enhancing Individual Preference
    Chapter 9. Temporal and Spatial Features of Speech Signals
    9.1 Background
    9.1.1 Methods of Single Syllables and Word
    A. Stimuli
    B. Recording methods
    C. Autocorrelation analysis
    9.2 Single Vowels and Single CV Syllables
    A. Single vowels
    B. Single CV syllable
    C. Vowel and syllable identification
    9.3 Continuous Speech
    9.3.1 Background
    9.3.2 Procedure
    9.3.3 Results of Five Temporal Factors 
    A. Analysis of three greetings in three languages
    B. Japanese Haiku Phase
    9.3.4 Effects of a Week Noise on the Five Factors
    9.3.5 Conclusions
    9.4 Effects of Spatial Factors on Speech Perception
    9.5 Future Directions

Product details

  • No. of pages: 120
  • Language: English
  • Copyright: © Academic Press 2018
  • Published: May 22, 2018
  • Imprint: Academic Press
  • Paperback ISBN: 9780128159385
  • eBook ISBN: 9780128159392

About the Author

Yoichi Ando

Yoichi Ando
Professor Yoichi Ando was awarded the 1995 Institute Honor by the American Institute of Architects. His 30 years of work developing and applying new theories of concert hall acoustics have helped redefine the way music is heard. A scientist, author and educator, his achievements are a benefit to both the world of architecture and the world of music. He was Associate Dean at the Graduate School of Science and Technology, Kobe University, Japan. 1975 Received PhD from Waseda University    Alexander-von-Humboldt Fellow (1975.7-1977.5) at Drittes physikalisches Institut, Universitat Gottingen 2001 Established Journal of Temporal Design http://www.jtdweb.org/ 2002 Received Dottore AD Honorem“ (Laurea Honoris Causa), University of Ferrara 2003 Professor Emeritus, Graduate School Kobe University 2013 Member, Bologna Academy of Science Author: Concert Hall Acoustics, Springer (1985), Architectural Acoustics, Springer (1998), Auditory Visual Sensations, Springer (2009), Brain-Grounded Theory of Temporal and Spatial Design, and 10 other books.

Affiliations and Expertise

Kobe University, Japan

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