Patent
1979-05-23
1981-08-11
Popek, Joseph A.
H04R 300
Patent
active
042836000
ABSTRACT:
A recirculationless concert hall simulation and enhancement system includes a reproduction system having a primary loudspeaker driven from a signal source and a number of auxiliary loudspeakers driven by sequentially delayed replicas of the original signal so as to reproduce the ambience associated with large size concert halls in a considerably smaller listening room without tonal discoloration. In a preferred embodiment total cumulative sequential delays exceed 50 milliseconds to give enhanced ambience, while individual inter-speaker delays are limited to less than 50 milliseconds, so that distinguishable, distinct echoes are not generated.
REFERENCES:
patent: 3145265 (1964-08-01), Tamura et al.
patent: 4039755 (1977-08-01), Berkovitz
AUDIO, Leonard Feldman, "Time Delay for Ambience", Dec. 1976, pp. 40-50.
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