SOUND PICKUP DEVICE, SOUND PICKUP AND SOUND SOURCE SEPARATING DEVICE AND METHOD FOR PICKING UP SOUND, METHOD FOR PICKING UP SOUND AND SEPARATING SOUND SOURCE AND RECORDING MEDIUM FOR RECORDING SOUND PICKUP PROGRAM, SOUND PICKUP AND SOUND SOURCE SEPARATING PROGRAM

摘要

PROBLEM TO BE SOLVED: To separate and extract individual sound sources by inferring a sound source direction, using two bidirectional microphones and one omnidirectional microphone, and switching zones without having to move the microphone physically.;SOLUTION: A sound pickup and sound source separating device comprises a plurality of directional microphones 1, 2 of directions for different directivities from each other, one omnidirectional microphone 3, a directivity-varying means 4 for generating a signal obtained by weighted summing by a weighted summing coefficient set in different combinations of directions of the directivity, based on sound pickup signals from the respective microphones, a sound source direction inferring means 7 for inferring the sound source direction, based on the signal obtained by weighted summing the respective weighted summing coefficients, and a directivity-selecting means 6 for selecting the weighted signal by the weighted summing coefficient based on the inferred sound source direction.;COPYRIGHT: (C)2002,JPO