Audio processing apparatus

Details Audio processing apparatus Audio processing apparatus

2008-02-28

2011-11-29

Ha, Nathan (Department: 2814)

Electrical audio signal processing systems and devices

Noise or distortion suppression

C381S092000

Reexamination Certificate

active

08068620

ABSTRACT:
A signal processing apparatus includes sound collecting elements, a noise detector for detecting a level of noise in a low-frequency band of audio signals output from the sound collecting elements, a noise reduction unit for reducing the noise in the audio signals in accordance with a signal output from the noise detector, a converter for converting the audio signals output from the noise reduction unit into pieces of audio data corresponding to channels including a low-frequency channel and other channels, a low-frequency channel controller for controlling a level of the audio data corresponding to the low-frequency channel in accordance with the level of the noise detected using the noise detector, and a level controller for controlling the level of the audio data of the low-frequency channel output from the low-frequency channel controller and levels of the pieces of audio data corresponding to the other channels output from the converter.

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