ACOUSTIC SIGNAL PROCESSING APPARATUS, METHOD AND PROGRAM

To provide an acoustic signal processing apparatus and the like that can detect at least either of a voice section or a non-voice section more accurately than before even when voice desired to recognize and noise have close characteristics.SOLUTION: An acoustic signal processing apparatus determines that a section of a time-sequence acoustic signal which is estimated as a section corresponding to a specific sound on the basis of detection time is a specific sound voice section, determines that a section of a time-sequence acoustic signal which is estimated not as the section corresponding to the specific sound on the basis of the detection time is a non-voice section, calculates a voice section feature amount being its feature amount from the time-sequence acoustic signal corresponding to the specific sound voice section, calculates a non-voice section feature amount being its feature amount from the time-sequence acoustic signal corresponding to the non-voice section, obtains a voice parameter indicating a feature of the voice section from the voice section feature amount, obtains non-voice parameter indicating a feature of the non-voice section from the non-voice section feature amount, and detects at least either of the voice section or the non-voice section from the time-sequence acoustic signal using the voice parameter and the non-voice parameter.SELECTED DRAWING: Figure 13