Sound signal processing device and sound signal processing method

A technology of sound signal processing and sound signal, which is applied in the field of sound signal processing devices, to achieve the effects of improving computing processing efficiency, reducing noise, and maintaining sound quality

Active Publication Date: 2011-12-07
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the state where it is difficult to hear conversational voices etc. in places with heavy traffic, inside an airplane, etc. is not changed

Method used

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  • Sound signal processing device and sound signal processing method
  • Sound signal processing device and sound signal processing method
  • Sound signal processing device and sound signal processing method

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Embodiment Construction

[0062] Hereinafter, embodiments of the present disclosure will be described in the following order.

[0063] 1. Noise suppression device according to the embodiment

[0064] 2. Example for NC headphones

[0065] 3. Examples applicable to various devices and modified examples

[0066] 1. Noise suppression device according to the embodiment

[0067] figure 1 A noise suppression device 1 is shown as an embodiment of the sound signal processing apparatus of the present disclosure.

[0068] The noise suppression device 1 acquires sound signals more suitable for conversations in a noisy environment in such a manner that sound signals absorbed by the left and right microphones 2L and 2R are input, and for example, sounds from the front (or rear) are enhanced while sounds from the other Directional sound is attenuated.

[0069] exist figure 1 Here, the sound signal SmL picked up by the microphone 2L is amplified by the microphone amplifier 3L and converted into digital data by...

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Abstract

The invention discloses a sound signal processing apparatus and a sound signal processing method. The sound signal processing apparatus includes a sound source direction determination unit and a filter processing unit. The sound source direction determination unit determines sound source directions with respect to sound signals of a plurality of channels for respective first to n-th bands. The filter processing unit includes first to n-th filters which are connected in series and configured to boost or attenuate the sound signals with respect to the first to n-th bands. The respective first to n-th filters perform boosting or attenuation based on the sound source directions of the first to n-th bands which are determined by the sound source direction determination unit.

Description

technical field [0001] The present disclosure relates to a sound signal processing device and a sound signal processing method for acquiring sound from a specific sound source direction. Background technique [0002] Japanese Unexamined Patent Application Publication No. 2010-11117 and Japanese Unexamined Patent Application Publication No. 2007-129383 are examples of related art. [0003] For example, beamforming techniques for forming the directivity of input sound from two microphones are known. [0004] Figure 10 The figure shows an example of noise canceling headphones (hereinafter referred to as NC headphones). Although the NC earphone 100 provides the user with stereo sound using the left and right speakers 101L and 101R, in order to reduce external noise, microphones 102L and 102R which absorb external sound are also provided. [0005] The NC earphone 100 reproduces and outputs, for example, the sound of reproduced music from a portable media player or the like. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00G10L21/02G10L21/034G10L25/03
CPCG01S3/8083H04R1/1083H04R2430/03H04R5/033G01S3/86G10K11/00G10L21/02H04S3/00H04R25/00
Inventor 北泽雄司浅田宏平村田康信板桥彻德
Owner SONY CORP
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