Electrical audio signal processing systems and devices – Binaural and stereophonic – Pseudo stereophonic
Patent
1993-11-30
1995-04-04
Kuntz, Curtis
Electrical audio signal processing systems and devices
Binaural and stereophonic
Pseudo stereophonic
381 26, H04R 500
Patent
active
054044065
ABSTRACT:
A method for reproducing sounds from signals, which are supplied from a same sound source through a pair of localization filters by using a pair of transducers disposed apart from each other and for controlling the localization of a sound image in such a way to make a listener feel that he hears sounds from a virtual sound source which is localized at a desired sound image location being different from the positions of the transducers. When performing this method, a signal for measurement reproduced at each sound image location is measured at the listener's position as data to be used for estimating head-related transfer characteristics. Then, the head-related transfer characteristics corresponding to each sound image location are estimated from the measured data. Subsequently, transfer characteristics of the pair of the localization filters, which characteristics of which are necessary for localizing a sound image at each sound image location, are calculated on the basis of the estimated head-related transfer characteristics. Next, a scaling processing is performed to obtain the coefficients of the pair of the localization filters as an impulse response. Then, the coefficients obtained by the scaling processing are set in a pair of convolvers. Finally, sound signals are supplied from the sound source to the pair of the convolvers. Further, outputs of the pair of the convolvers are reproduced from the pair of the transducers.
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"Construction of Orthostereophonic System for the Purposes of Quasi-Insitu Recording and Reproduction" by H. Hamada; Journal Acoustical Society of Japan (J); vol. 39, No. 5, 1983; pp., 337-348 (w/ English abstract).
"A Method for Binaural Stereophonic Reproduction" by K. Yamakoshi; Journal of Acoustical Society of Japan (J); vol. 39, No. 5, p.349 (w/ English translation), 1983.
Fuchigami Norihiko
Matsumoto Mitsuo
Nakayama Masahiro
Suzuki Takuma
Tanaka Yoshiaki
Kuntz Curtis
Lee Ping W.
Victor Company of Japan Ltd.
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