Processing

Please wait...

Settings

Settings

Goto Application

1. IN1397/CHENP/2011 - ACOUSTIC SIGNAL PROCESSING DEVICE, PROCESSING METHOD THEREOF, AND PROGRAM

Office India
Application Number 1397/CHENP/2011
Application Date 28.02.2011
Publication Number 1397/CHENP/2011
Publication Date 02.12.2011
Publication Kind A
IPC
H04S 1/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS
1Two-channel systems
Applicants SONY CORPORATION
Inventors SHUICHIRO NISHIGORI
SHIRO SUZUKI
AKIRA INOUE
Priority Data 2009160561 07.07.2009 JP
Title
(EN) ACOUSTIC SIGNAL PROCESSING DEVICE, PROCESSING METHOD THEREOF, AND PROGRAM
Abstract
(EN)
The present invention relates to an acoustic signal processing apparatus that suppresses auditory noise caused in a difference signal generated by acoustic signals of a plurality of channels, a processing method there for, and a program.A difference spectrum calculation unit 320 calculates, as a difference spectrum, the absolute difference value between frequency spectra of the left and right channels sent from frequency spectrum generation units 311 and 312. A low-level band determination unit 330 determines a difference spectrum corresponding to a low-level band among difference spectra of all the frequency bands. A substitution spectrum generation unit 350 generates a substitution spectrum for which a difference spectrum is substituted, on the basis of the frequency spectrum of the left channel. A spectrum substitution unit 360 substitutes the difference spectrum corresponding to the low-level band for a substitution spectrum corresponding to the difference spectrum. An accompaniment signal generation unit 370 generates an accompaniment signal by converting a frequency spectrum sent from the spectrum substitution unit 360 into a time-domain signal.