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Noise reduction method, chip, chip module and equipment

A noise reduction processing and noise signal technology, applied in the field of noise reduction, can solve the problems of poor noise reduction processing effect of environmental noise, long delay of narrow-band noise, phase shift and other problems, and achieve the effect of improving the effect

Active Publication Date: 2022-07-15
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the above process, the constructed narrow-band noise tends to produce large delay and phase shift, resulting in poor noise reduction effect on environmental noise.

Method used

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  • Noise reduction method, chip, chip module and equipment
  • Noise reduction method, chip, chip module and equipment
  • Noise reduction method, chip, chip module and equipment

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Embodiment Construction

[0082] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0083] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that data so used may be interchange...

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Abstract

Embodiments of the present application provide a noise reduction method, a chip, a chip module, and a device, wherein the noise reduction method includes: using a narrowband filter to perform narrowband filtering processing on a first noise signal to obtain a first narrowband signal, a first noise signal It is obtained after collecting the environmental noise at the current moment; the first filter is used to filter the first noise signal to obtain the first broadband filtered signal; the second filter is used to filter the first narrowband signal to obtain the first filter. A narrowband filtered signal; noise reduction processing is performed on the first noise signal according to the first wideband filtered signal and the first narrowband filtered signal. The noise reduction method, chip, chip module and device provided by the embodiments of the present application can be used to improve the effect of noise reduction processing on environmental noise.

Description

technical field [0001] The embodiments of the present application relate to the technical field of noise reduction, and in particular, to a noise reduction method, a chip, a chip module, and a device. Background technique [0002] At present, in order to improve the audio playback quality of a playback device (such as headphones or speakers, etc.), it is usually necessary to perform noise reduction processing on ambient noise collected by the playback device. [0003] In the related art, the method of noise reduction processing for environmental noise includes: generally using a vibration sensor to collect the environmental noise, obtaining the frequency and amplitude of the narrowband noise, constructing the narrowband noise according to the frequency and amplitude, and using the notch filtering method to reduce the narrowband noise. Noise reduction processing is performed on the noise, and then environmental noise reduction processing is performed according to the narrowba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10K11/178
CPCG10K11/17823G10K11/17825G10K11/17879G10K11/17854G10K2210/1081G10K2210/1282G10K2210/3028
Inventor 魏孜宸方思敏
Owner SPREADTRUM COMM (SHANGHAI) CO LTD