By Yoichi Ando
ISBN-10: 443155422X
ISBN-13: 9784431554226
ISBN-10: 4431554238
ISBN-13: 9784431554233
This booklet specializes in opera residence acoustics in response to subjective choice conception; it goals researchers in acoustics and imaginative and prescient who're operating in physics, psychology and mind body structure. This booklet is helping readers to appreciate any subjective attributes when it comes to target parameters in response to the robust and practicable version of the auditory system.
It is reconfirmed right here that the well known Helmholtz idea, which was once in keeping with a peripheral version of the auditory process, won't good describe pitch, timbre and length in addition to the spatial sensations defined during this publication, nor total responses comparable to subjective choice of sound fields and the annoyance of environmental noise.
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Extra resources for Opera House Acoustics Based on Subjective Preference Theory
Example text
The left and right amplitudes of the early SVR, A(P1–N1) indicate that the left and right hemispheric dominance are due to the temporal factor (Δt1) and 42 ② ③ ④ ⑤ ⑥ ⑦ 4 Model of Auditory-Brain System spatial factors (LL and IACC), respectively. It is worth noticing that the SL or LL was first thought to be classified as a temporal-monaural factor from a physical viewpoint. However, the results of SVR indicate that the sound level is right hemisphere dominant. Thus, SL or LL should be classified as a spatial factor from a viewpoint of brain, which is measured by the geometric average value of the binaural sound energies arriving at both ears.
Thus, the results reconfirm that, when the Δt1 is changed, the left hemisphere is highly activated, and the value of τe for the α-wave of this hemisphere corresponds well with the subjective preference. The α-wave has the longest period in the EEG in the awaking stage and may indicate feelings of “pleasantness” and “comfort”, a preferred condition, which is widely accepted. Thus, a long value of τe in the α-wave may relate to the long N2 latency of SVR at the preferred condition as shown in Figs.
Fig. 1 Autocorrelograms and autocorrelation histograms in response to a variable F0 from 80 to 160 Hz of a single-formant vowel (Cariani and Delgutte 1996a). Upper Pooled Autocorrelograms for the vowel. 1 Neural Evidences in Auditory-Pathway and Brain System 29 Fig. 2 Measured correlations of sound signal arriving at the left and right ear entrances of a dummy head. Ⓛ Φll(0), Ⓡ Φrr(0) and U : jUlr ðsÞjmax ; jsj 1 ms Fig. 3 Averaged amplitudes of the auditory brainstem response (ABR), the wave IVl (symbol l), and the wave IVr (symbol r) normalized to the amplitude at the frontal incidence.
Opera House Acoustics Based on Subjective Preference Theory by Yoichi Ando
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