Reverberation system

Details Reverberation system Reverberation system

1999-02-16

2000-08-29

Harvey, Minsun Oh

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381104, H03G 300

Patent

active

061119628

ABSTRACT:
A reverberation system produces reverberant sound supposed to be generated when sound emitted from a real sound source location inside a virtual acoustic room to be simulated is reflected by virtual room partitions surrounding the same, based on a set of stored impulse responses of reverberant sound actually or virtually observed at different observation positions in the vicinity of room partitions defining an actual or virtual model acoustic room. Digital filters each convolute a source signal representing the emitted sound, using coefficient parameters representing the corresponding stored impulse response, to thereby synthesize a virtual reverberant sound signal at each of simulation positions corresponding to the observation positions. Signal delay devices each delay the output of the corresponding digital filter, by a signal delay time controlled by a time delay setting device to thereby equivalently move the virtual room partition(s) of the virtual acoustic room relative to the real sound source location, and hence virtually change the virtual acoustic room into a desired shape.

REFERENCES:
patent: 5381482 (1995-01-01), Matsumoto et al.
patent: 5384856 (1995-01-01), Kyouno et al.
patent: 5452360 (1995-09-01), Yamashita et al.

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