Noise reducing apparatus, method and program and sound pickup apparatus for electronic equipment

Abstract

A noise reducing apparatus is disclosed, which includes: input means for inputting multiple audio signals from multiple audio channels; multiple band extracting means for extracting a predetermined band from the multiple audio signals; calculating means for averaging signals from the multiple band extracting means; multiple first level detecting means for detecting the signal levels in a predetermined period of time of the signals from the multiple band extracting means; second level detecting means for detecting the signal level in a predetermined period of time of the signal from the calculating means; selecting means for selecting, for each of the predetermined period of times, the signal having the lowest level value of the level values detected by the multiple first level detecting means and the second level detecting means; band limiting means for limiting the band of the signal from the selecting means; and band synthesizing means for band-synthesizing the signal from the band limiting means and the signal in a band, which is not extracted by the multiple band extracting means, for each audio channel, wherein the output of the band synthesizing means is an audio channel output signal.

Description

[0001] Cross References to Related Applications [0002] The present invention relates to subject matter related to Japanese Patent Application JP2005-264157 filed in the Japan Patent Office on Sep. 12, 2005, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to a noise reduction device, method and program for reducing noise caused by wind passing through a microphone in an electric circuit, and a pickup device for an electronic device, and more particularly relates to minimizing, selecting and reproducing Noise reduction device, method and program for synthesizing a plurality of microphone signals and pickup device for electronic equipment. Background technique [0004] In the past, to prevent wind noise picked up by large radios or industrial cameras outdoors, windproof devices called wind chokes were attached to microphones or microphones that could be covered with urethane. Instead of a mechanical wind...

AI Technical Summary

Problems solved by technology

[0006] 2. Attenuate the level of frequency bands that include a large amount of wind noise components;

[0036] Therefore, in response to an instruction to cancel the wind noise component reducing effect by operating the switch 214, the switch 214 connects the output terminal E to the contact A and the output F to the contact D, resulting in no wind noise reducing effect

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