| 摘要 |
PROBLEM TO BE SOLVED: To expand the function so as to deal with a different channel number and a different sampling frequency by adding an optional signal processing section. SOLUTION: An optional finite impulse response(FIR) processing section 405 having the same constitution as the constitution of an FIR processing section 402, which is normally used, is added. The input selected by an input select section 401 is inputted to the sections 402 and 405 and four channel reverberating sound data are generated by a folding-in. Then, reverberating sound data of each channel are mixed with original sound data in an output mix section 405 and four channel outputs, to which reverberation is added, are obtined. By doubling the sampling frequency generated by a PLL section 404, reverberation is added to the input signals having a double sampling frequency. Moreover, revereration is added while maintaining a stereophonic localization by independently inputting L and R channels to the sections 402 and 405. |
