Auditory and Visual Sensations by Yoichi Ando

By Yoichi Ando

Professor Yoichi Ando, acoustic architectural fashion designer of the Kirishima overseas live performance corridor in Japan, offers a accomplished rational-scientific method of designing functionality areas. His conception is predicated on systematic psychoacoustical observations of spatial listening to and listener personal tastes, whose neuronal correlates are saw within the neurophysiology of the human mind. A correlation-based version of neuronal sign processing within the important auditory approach is proposed within which temporal sensations (pitch, timbre, loudness, period) are represented by means of an inner autocorrelation illustration, and spatial sensations (sound place, measurement, diffuseness relating to envelopment) are represented through an inner interaural crosscorrelation functionality. jointly those inner significant auditory representations account for the fundamental auditory traits which are proper for hearing tune and speech in indoor functionality areas. saw mental and neurophysiological commonalities among auditory and visible sensations and choice styles are offered and mentioned. This ebook hence spans the disciplines of physics, acoustics, psychology, neurophysiology, and tune construction, thereby mixing technology, engineering, and art.

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The preferred listening level depends upon the music and the particular passage being performed. 2 lists the two music sources that were used in these listening level experiments. Motif A is the slow and sombre Royal Pavane and Motif B is the fast and playful Sinfonietta. For these two musical extremes, the gross preferred levels obtained by 16 subjects were in the peak ranges of 77–80 dBA, 77–79 dBA for motif A and 79–80 dBA for motif B. 2 Optimal First Reflection Time ( t1 ) The timing of early reflections relative to the direct sound is the second major factor that influences listening preference.

C) and (d) Slow musical piece, motif A (Gibbons) (e) and (f) Fast musical piece, motif B (Arnold) Fig. 6 Minimum values of the running effective duration as a function of temporal integration time 2T. (circles, curve A) Slow musical piece, motif A (Gibbons). (triangles, curve B) Fast musical piece, motif B (Arnold). (filled squares, curve K) Kare-Sansui, music motif K (Yamamoto) 18 2 Temporal and Spatial Aspects of Sounds and Sound Fields music motifs. 3 as a temporal window. 1 Sound Transmission from a Point Source through a Room to the Listener Let us consider the sound transmission from a point source in a free field to the two ear canal entrances.

Then, cortical, longer-latency slow vertex responses (SVR) corresponding to subjective preferences were examined in relation to temporal and spatial factors. In the third stage, we investigated aspects of human electroencephalography (EEG) and the magnetoencephalography (MEG) responses that correspond to subjective preference. EEG and MEG signals in the alpha frequency band were analyzed using autocorrelations and crosscorrelations. 1 summarizes the acoustic factors, their corresponding percepts and preferences, and the neuronal correlates that were found.

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