Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1993-10-12
1995-11-14
Brinich, Stephen
Electrical audio signal processing systems and devices
Sound effects
Reverberators
381 17, H03G 300
Patent
active
054674018
ABSTRACT:
The present invention discloses a sound environment simulator including a sound field analyzing unit, a sound field reproducing unit, and an output unit. The sound environment analyzing unit divides the solid surfaces of a space to be analyzed into a set of sections to compute the volume of reflected sounds with a sound absorption coefficient of walls and form factors. It further computes time series data related to the arrival volume of sounds emanated from a certain sound source to the sound receiving point. An impulse response computing unit in the sound field reproducing unit transduces the time series data into an impulse response. Accordingly, the sound field reproducing unit convolutes the impulse response on a dry source in accordance with data related to a listener's position inputted from an associated virtual reality equipment to generate a reproduced sound over a headphone.
REFERENCES:
patent: 4731848 (1988-03-01), Kendall et al.
patent: 4928250 (1990-05-01), Greenberg et al.
patent: 5046097 (1991-09-01), Lowe et al.
patent: 5142586 (1992-08-01), Berkhout
patent: 5173944 (1992-12-01), Begault
Kodama Hisashi
Nagamitsu Sachio
Okada Tsuneko
Sakai Mayumi
Brinich Stephen
Matsushita Electric - Industrial Co., Ltd.
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