| 摘要 |
PROBLEM TO BE SOLVED: To efficiently remove a vocal sound while leaving an accompaniment sound having a frequency band close to that of the vocal sound from an acoustic signal to be inputted.SOLUTION: An acoustic signal processing device includes: BEFs 101 and 111 for removing a component of a specified frequency band from an input signal to output it; and BPFs 102 and 112 for extracting the component of the specified frequency band of the input signal. The outputs of the BPFs 102 and 112 are analyzed by an analysis part 122. When the amplitudes of the outputs exceed a predetermined threshold, switches 106 and 116 select signals without being processed by the BEFs 101 and 111, etc., as an output for only a predetermined period of time. |
