Recirculationless concert hall simulation and enhancement system
OwnerJoel M. Coheninventor
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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.
Claims3
A recirculationless ambience enhancement system which does not create booming or introduce tonal discoloration for use with a signal source, a primary loudspeaker connected to the source and located in a listening area, and a plurality of auxiliary loudspeakers spaced from said primary loudspeaker within the listening area comprising:
- means for sequentially delaying signals from said source without recirculation so as to produce a corresponding number of delayed signals, the delay periods being less than that at which echoes are ascertainable, the cumulative delay periods exceeding that at which echoes are ascertainable;
- and,
- means for driving said auxiliary loudspeakers respectively only with said sequentially delayed signals, such that ambience is enhanced over that of the original signal source without echo-related phase cancellations which would cause divergence from a flat frequency response.
A method of enhancing original concert hall ambience in a small listening area without creating ascertainable echoes, without signal recirculation and without creating booming or introducing tonal discoloration comprising the steps of:
- acoustically reproducing at one location in the listening area sound from an original sound source;
- and
- acoustically reproducing without recirculation at a plurality of locations in the listening area sound from the original source, all of which is sequentially delayed such that distinct echoes are not discernible;
- such that the cumulative delay exceeds that at which echoes are discernible;
- and such that phase cancellations are avoided.
Dependencies are inferred from the claim text.