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Noise inhibition method, audio processing chip, processing module group, and Bluetooth equipment

A technology for noise suppression and noise processing, applied in the field of audio noise reduction, can solve the problems of high consumption of system resources and unstable voice noise reduction effect, and achieve the effect of improving call quality

Inactive Publication Date: 2017-08-04
BUILDWIN SEMICON SHENZHEN CO LTD
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  • Application Information

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Problems solved by technology

[0007] Embodiments of the present invention provide a noise suppression method, an audio processing chip, an audio signal processing module, and a Bluetooth device, which can solve the existing problems of unstable voice noise reduction effects and high consumption of system resources

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  • Noise inhibition method, audio processing chip, processing module group, and Bluetooth equipment
  • Noise inhibition method, audio processing chip, processing module group, and Bluetooth equipment
  • Noise inhibition method, audio processing chip, processing module group, and Bluetooth equipment

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Embodiment Construction

[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0042] In the embodiment of the present invention, the noise of the signal collected by the microphone is divided into two parts: echo and environmental noise. In the operation process, the two parts of noise need to be processed separately to eliminate and suppress the noise so as to achieve good call quality or achieve better voice recognition effect.

[0043] Usually like figure 1 As shown, the echo is caused by the acoustic coupling between the speaker and the microphone of the communication device. In equipment such as wireless phones, wired phones, or hands-free equipment, it occurs becaus...

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Abstract

The embodiment of the invention provides a noise inhibition method, an audio processing chip, a processing module group and Bluetooth equipment. The method comprises the steps: collecting at least one voice signal segment; converting the voice signal from time domain expression to frequency domain expression; carrying out the preset echo eliminating processing and preset noise eliminating processing of the voice signal in the frequency domain, and obtaining a target signal; and converting a target signal from the frequency domain expression to the time domain expression. The method integrates the same and combinable parts of two modules: noise eliminating and echo eliminating, thereby achieving the filtering and eliminating on one circuit, achieving the better noise eliminating of a signal collected by a microphone, and improving the communication quality.

Description

Technical field [0001] The invention relates to the technical field of audio noise reduction, in particular to a noise suppression method, an audio processing chip, an audio signal processing module and a Bluetooth device. Background technique [0002] A microphone is a widely used electro-acoustic transducer device, which can convert acoustic signals into corresponding electrical signals. The electrical signal is an analog signal with a continuous change of a specific frequency, amplitude, and phase, which can reflect the characteristics of the acoustic signal. [0003] In the process of collecting acoustic signals, the microphone collects the overall acoustic signals of the surrounding environment, and cannot collect specific signals. Therefore, when applied to a wireless call or other real-time call equipment, multiple noises mixed in the surrounding environment are usually collected at the same time, which causes the user's real voice to be masked and affects the call quality....

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Application Information

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IPC IPC(8): G10L21/0232G10L21/0208G10L21/0308
Inventor 符运河
Owner BUILDWIN SEMICON SHENZHEN CO LTD