Auditory and Visual Sensations

Beschreibung

Professor Yoichi Ando, acoustic architectural designer of the Kirishima International Concert Hall in Japan, presents a comprehensive rational-scientific approach to designing performance spaces. His theory is based on systematic psychoacoustical observations of spatial hearing and listener preferences, whose neuronal correlates are observed in the neurophysiology of the human brain. A correlation-based model of neuronal signal processing in the central auditory system is proposed in which temporal sensations (pitch, timbre, loudness, duration) are represented by an internal autocorrelation representation, and spatial sensations (sound location, size, diffuseness related to envelopment) are represented by an internal interaural crosscorrelation function. Together these two internal central auditory representations account for the basic auditory qualities that are relevant for listening to music and speech in indoor performance spaces. Observed psychological and neurophysiological commonalities between auditory and visual sensations and preference patterns are presented and discussed. This book thus spans the disciplines of physics, acoustics, psychology, neurophysiology, and music production, thereby blending science, engineering, and art.

This is an approach from the auditory and visual brain activities and functioning to sensations. This book is concerned with physics, psychology, brain physiology, blending science and art. Temporal sensations such as pitch or missing fundamental, loudness, timbre, and duration sensation, which is introduced here as the fourth, may be described by the temporal factors extracted from the autocorrelation function (ACF), which are associated with the left hemisphere. On the other hand, spatial sensations such as localization in the horizontal plane, apparent source width (ASW) and subjective diffuseness are described by the spatial factors extracted from the inter aural cross correlation function (IACF) are associated with the right hemisphere.

The "primary sensation" may be classified in two categories: temporal sensations and spatial sensations. Therefore, any subjective responses of the sound field may be described based on both the temporal and spatial factors. The first part of book contributes to basic acoustics researches related to brain including concert hall and opera house acoustics, noise measurement and effects of noise on man, but also psychological and physiological acoustics as well as speech and music perception.

As described in the second part, there is a certain degree of similarity in the processing of auditory- and visual –brain systems. An analogy of this theory may be applied for the temporal sensations and the spatial sensations of vision, as well as the subjective preference of the visual environment. The typical temporal sensation of vision is "pitch" of a flickering light, which includes the missing fundamental phenomenon. Visual spatial sensations discussed here are contrast, regularity and coarseness. But, no color effects on the sensations are treated in this volume. As an application, a design theory incorporating temporal and spatial factors may be generalized in architectural and environmental design. Someexamples of application will be offered.

Autor*in

Yoichi Ando

Themen in »Auditory and Visual Sensations«

Electronic and Magnetic Responses in the Central Auditory Sy Neuroscience auditory evoked potentials concert hoyingf interaural crosscorrelation function neurophysiology perception acoustics physiology speech intelligibility temporal autocorrelation function theory subjective preference

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From the reviews:

“The book has two parts with sixteen chapters. … The book is well structured and chapters are held short in length just to point out the most relevant information needed. … At the end of the book, a list of abbreviations is presented, which is very useful for the reader, but most advantageous, is that for all abbreviations, a chapter in the book is referred. … It provides equations and summaries of concepts for experts working in the field of concern.” (Reinhard O. Neubauer, International Journal of Acoustics and Vibration, Vol. 16 (3), 2011)

“This is well-written and illustrated, unusual, and important book. … In addition to a good index and definitions of terms, excellent references are given. … This book presents a good start and much important progress.” (David Lloyd (ben Yaacov Yehuda) Klepper, Noise Control Engineering Journal, Vol. 60 (2), March-April, 2012)

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