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Patent Searching and Data


Title:
MICROPHONE DEVICE, REPRODUCED SOUND SIGNAL PROCESSOR, AND WIND SOUND REDUCING DEVICE FOR SOUND SIGNAL
Document Type and Number:
Japanese Patent JP2001186585
Kind Code:
A
Abstract:

To surely reduce only the wind sound of wind from the left and right sound signals, even when a non-correlation component quantity of the left and right sound signals other than the wind sound signal is increased.

A subtractor means 5 subtracts the left and right sound signals, an extract means 7 extracts a frequency band component of a wind sound signal from the output of the means 5, the output is fed to arithmetic means 9, 10 via a variable gain means 8, subtracted from or added to the left and right sound signals, an adder means 11 adds the outputs, an extract means 13 extracts the frequency band component of the wind sound signal from the output, the output is fed to arithmetic means 16, 15 through a variable gain means 14 and is subtracted from the output of the arithmetic means 9, 10, an extract means 17 extracts the low frequency component of the wind sound signal from the output of the sbutractor means 5, its output is fed to a detection means 30, from which a level detection signal adjustable for the wind sound sound signal is obtained to vary the gains of the 1st and 2nd variable gain means 8, 14.


Inventors:
OZAWA KAZUHIKO
Application Number:
JP36476399A
Publication Date:
July 06, 2001
Filing Date:
December 22, 1999
Export Citation:
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Assignee:
SONY CORP
International Classes:
H04R3/00; (IPC1-7): H04R3/00
Attorney, Agent or Firm:
Hidekuma Matsukuma