SOUND SOURCE SEPARATING APPARATUS, SOUND SOURCE SEPARATING PROGRAM, SOUND PICKUP APPARATUS, AND SOUND PICKUP PROGRAM

摘要

There is provided a sound source separating apparatus including a bidirectionality forming unit configured to form a bidirectionality by use of a sound signal picked up by two microphones which are located to be horizontal with respect to the target direction, among three microphones disposed at vertexes of an isosceles right triangle, a unidirectionality forming unit configured to form a unidirectionality by use of a sound signal picked up by two microphones which are located in a same direction as the target direction, among the three microphones, and a target sound extracting unit configured to extract a target sound by performing a spectral subtraction of all outputs from the bidirectionality forming unit and the unidirectionality forming unit from a signal.

主权项

1. A sound source separating apparatus comprising:
a bidirectionality forming unit configured to form a bidirectionality having a dead angle in a target direction by use of a sound signal picked up by two microphones which are located to be horizontal with respect to the target direction, among three microphones disposed at vertexes of an isosceles right triangle; a unidirectionality forming unit configured to form a unidirectionality having a dead angle in the target direction by use of a sound signal picked up by two microphones which are located in a same direction as the target direction, among the three microphones; and a target sound extracting unit configured to extract a target sound by performing a spectral subtraction of all outputs from the bidirectionality forming unit and the unidirectionality forming unit from either one of sound signals picked up by the two microphones located to be horizontal with respect to the target direction or a signal obtained by averaged sound signals picked up by the two microphones.