Patent ID: 6721426
Filing Date: 2004-04-13
Classification: H04R

Abstract:
A signal processor for carrying out predetermined signal processing by convoluting impulse responses from sound sources to a measurement point calculated in advance by measurement or calculation to input audio signals of a plurality of channels and outputting two audio signals,said signal processor comprising: signal processing means including means for dividing said input audio signals into two lines for respective two channels finite-tap-length FIR filters respectively for said plurality of channels, and first and second reverberation adding circuits respectively for first and second lines, an addition point provided to a tap midpoint of one of said FIR filters of one channel of said first and second lines, a delay output signal of a tap end from said FIR filter of the other channel of said first and second lines is multiplied by a predetermined multiplication coefficient and then added at said addition point, wherein an output of said FIR filter of said one channel of said first and second lines is subjected to reverberation adding processing by said first and second reverberation adding circuits of said first and second lines, and means for adding an output of said FIR filter of said other channel of said first and second lines to said output of said FIR filter of said one channel to obtain an addition output as an output signal of said first and second lines of said signal processing means.