Low frequency compensating circuit for audio signals

Details Low frequency compensating circuit for audio signals Low frequency compensating circuit for audio signals

1991-06-18

1993-07-20

Isen, Forester W.

Electrical audio signal processing systems and devices

Including frequency control

381 97, H03G 500

Patent

active

052300226

ABSTRACT:
A low frequency compensating circuit for audio signals is disclosed, which comprises frequency component separating means for separating an audio signal coming from a predetermined audio signal source into a low frequency component signal under a predetermined frequency and a high frequency component signal over the predetermined frequency to output separately the low frequency component signal and the high frequency component signal; variable delaying means for delaying the low frequency component signal so that delay time increases with increasing frequency; fixed delaying means for delaying the high frequency component signal by a fixed delay time, which is almost equal to the delay time set for the predetermined frequency by the variable delaying means; and synthesizing means for combining delayed signals outputted by the two delaying means. In this way, clearness and crispness are obtained for the low frequency region and at the same time sound doesn't become unnatural for the high frequency region.

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