Abstract
Primary sensations, pitch, loudness, and timbre, of a given source signal and sound field are described based on the model of the auditory–brain system [Ando, Architectural Acoustics (AIP/Springer-Verlag, New York, 1998)]. The model consists of the autocorrelation and interaural cross-correlation mechanisms. (Note that the power density spectrum is identical with the ACF.) In order to describe timbre, the human cerebral hemisphere specialization for the temporal and spatial factors of sound fields is taken into consideration in a similar manner as the subjective preference. Here, timbre is defined by a remaining primitive sensation that cannot be expressed by only pitch and loudness. [Work was partially supported by the Ministry of Education, Grant-in-Aid for Scientific Research (C), 9838022, 1998.]
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