Electrical audio signal processing systems and devices – Binaural and stereophonic – Pseudo stereophonic
Patent
1995-03-30
1997-01-21
Kuntz, Curtis
Electrical audio signal processing systems and devices
Binaural and stereophonic
Pseudo stereophonic
381 61, 381102, 381 97, H04R 500
Patent
active
055966454
ABSTRACT:
Processing systems corresponding to the right and left channels are provided for applying independent sound image localization control to each of plural input sound signals on the basis of at least individual amplitude coefficients and delay information for the right and left channels that are separately provided for each of the input sound signals. The same sound signals are distributively input to each of the processing systems. Each of the processing systems comprises a delay line providing plural delay stages, a coefficient operator for arithmetically operating each of the input sound signals with the individual amplitude coefficient separately provided therefor, and an input circuit for additively inputting the sound signals, having been arithmetically operated by the coefficient operator, to the delay line at the respective delay stages corresponding to the individual delay information, so that the sound signals input to the respective delay stages are gradually mixed together while being sequentially delayed, so as to ultimately output a single sound signal that is a mixture of the plural sound signals arithmetically operated with the amplitude coefficients. Further, with respect to one of the input sound signals, two operation units each including a coefficient operator and an input circuit are assigned as the right channel operation units, and similar two operation units are assigned as the left channel operation units. Also, time-variation of sound image localization can be achieved.
REFERENCES:
patent: 4792974 (1988-12-01), Chace
Kuntz Curtis
Oh Minson
Yamaha Corporation
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