Voice noise reduction method and voice collection device

A voice noise reduction, voice signal technology, applied in the field of communication

Active Publication Date: 2016-05-11
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the existing adaptive noise elimination technology, the present invention aims to provide a voice noise reduction method and a voice collection device with a simple structure, which can effectively realize effective anti-crosstalk and improve voice quality

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  • Voice noise reduction method and voice collection device
  • Voice noise reduction method and voice collection device
  • Voice noise reduction method and voice collection device

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Embodiment Construction

[0179] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0180] It should be understood that the invention can be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals refer to like elements throughout.

[0181] The terminology used herein is for the purpose of describing part...

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Abstract

The invention provides a voice noise reduction method and a voice collection device. According to the voice noise reduction method, frequency-domain transform and filtering are carried out through a filter assembly on a noise-cancelled voice signal formed through filtering and a reference noise signal formed through filtering, an original noise signal corresponding to the reference noise signal and a noise-containing voice signal corresponding to the noise-cancelled voice signal are output in a filtered manner, and a first crosstalk-resistant filter unit forming the reference noise signal and a second crosstalk-resistant filter unit forming the noise-cancelled voice signal update filter coefficients under control. The technical scheme has the following advantages: by employing only one pair of adaptive filters and using a post-filter to control the updating of the filter coefficients of the one pair of adaptive filters, the structure is simplified; and by adjusting the filter coefficient updating weights of the voice signal and the noise signal in a targeted manner, excellent crosstalk-resistant and noise reduction effects are achieved.

Description

technical field [0001] The invention relates to the communication field, in particular to a speech noise reduction method and a speech collection device. Background technique [0002] With the innovation of communication technology, people's requirements for the quality of voice communication are constantly improving. Among them, the anti-noise performance of the mobile communication terminal is an important concern of the voice communication quality. After the single-microphone system reduces noise and improves voice quality through a single-channel voice enhancement solution, more and more mobile communication terminals are equipped with a dual-microphone (DualMic) system. This dual-microphone system usually adopts the structure of primary and secondary microphones. It places a primary microphone at the lower end of the mobile phone, close to the mouth, for receiving noisy voice signals, and another secondary microphone is placed at the back or top of the upper end of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208
Inventor 吴晟蒋斌林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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