Recording medium and picked up program, using equipment picked up, picked up way, that way

摘要

PPROBLEM TO BE SOLVED: To provide a sound pickup apparatus capable of improving a noise suppression performance even in an environment where reverberation presents, and of improving a sound quality of a required signal to be picked up. PSOLUTION: A sound pickup apparatus has six sound pickup parts, a processed target signal generator, a power spectrum estimator, a reverberation spectrum estimator, a gain factor calculator, and a multiplier. The processed target signal generator generates a processed target signal from a signal outputted from one or more preliminarily-decided microphones or sound pickup parts. The power spectrum estimator estimates a signal quantity for a required sound source from which a reverberation signal is removed and a signal quantity for the other sound source from a signal quantity of each sound pickup signal and reverberation sound obtained at each sound pickup part for each frequency. The reverberation spectrum estimator calculates a signal quantity of the reverberation sound from the signal quantity for the required sound source and the signal quantity for the other sound source which are estimated by the power spectrum estimator for each frequency. PCOPYRIGHT: (C)2009,JPO&INPIT