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Method and device lifting voice transmission signal to noise ratio

A technology for voice transmission and signal-to-noise ratio, applied in the field of signal transmission, can solve the problems of low signal-to-noise ratio of voice signals, and achieve the effect of improving signal-to-noise ratio and improving voice quality.

Active Publication Date: 2017-06-09
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for improving the signal-to-noise ratio of voice transmission to solve the problem of low signal-to-noise ratio of voice signals transmitted by mobile terminals in the prior art

Method used

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  • Method and device lifting voice transmission signal to noise ratio
  • Method and device lifting voice transmission signal to noise ratio
  • Method and device lifting voice transmission signal to noise ratio

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0026] A method for improving the signal-to-noise ratio of voice transmission provided by an embodiment of the present invention is introduced in detail.

[0027] refer to figure 1 , which shows a flow chart of a method for improving the signal-to-noise ratio of voice transmission in an embodiment of the present invention, which is applied to a mobile terminal, and the method includes:

[0028] Step 101, acquire a first voice signal.

[0029] In this embodiment, the voice signal can be divided into an uplink voice signal and a downlink voice signal. The uplink voice signal is a signal collected and transmitted by the mobile terminal, and the downlink voice signal is a signal transmitted by the other party received by the mobile terminal. For example, user A communicates with user B through mobile terminal X. For mobile terminal X, the voice signal of user A collected by mobile terminal X is an uplink voice signal, and the received voice signal of user B is a downlink voice si...

Embodiment 2

[0039] refer to figure 2 , shows a flow chart of a method for improving the signal-to-noise ratio of speech transmission in another embodiment of the present invention.

[0040] Step 201, acquire a first voice signal.

[0041] Step 202, acquiring a voice signal of a preset user.

[0042] In this embodiment, the mobile terminal may acquire the voice signal of the preset user through a device such as a microphone, or may acquire the voice signal of the preset user in other ways, which is not limited in detail in this embodiment of the present invention.

[0043] Step 203: Determine the frequency range of the preset user according to the voice signal.

[0044] In this embodiment, after the voice signal of the preset user is acquired, the frequency range of the preset user is determined according to the acquired voice signal. There are many ways to determine the frequency range. Preferably, the acquired voice signal is sampled and digitally processed to obtain the frequency sp...

Embodiment 3

[0070] A device for improving the signal-to-noise ratio of voice transmission provided by an embodiment of the present invention is introduced in detail.

[0071] refer to image 3 , shows a block diagram of a device for improving the signal-to-noise ratio of voice transmission in an embodiment of the present invention, which is deployed in a mobile terminal, and is characterized in that the device includes a voice signal acquisition module 301, a voice signal judgment module 302, a frequency range Obtaining module 303, voice signal output module 304:

[0072] A voice signal acquisition module 301, configured to acquire a first voice signal;

[0073] A voice signal judging module 302, configured to judge whether the first voice signal is a voice signal of a preset user;

[0074] A frequency range acquisition module 303, configured to acquire the frequency range of the preset user if the judgment result is yes;

[0075] The voice signal output module 304 is configured to adj...

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Abstract

The invention provides a method and device lifting voice transmission signal to noise ratio; the method comprises the following steps: obtaining a first voice signal; determining whether the first voice signal is a preset user voice signal; if yes, obtaining a preset user frequency range; adjusting filter parameters according to the frequency range, and outputting a second voice signal, wherein the frequency, outside the frequency range, of the second voice signal is inhibited. The method can improve the voice transmission signal to noise ratio, thus improving the voice quality.

Description

technical field [0001] The invention relates to the field of signal transmission, in particular to a method and device for improving the signal-to-noise ratio of voice transmission. Background technique [0002] With the development of communication technologies, mobile terminals have been widely used, and mobile terminals can provide users with services such as voice calls and video calls. During a call, the mobile terminal usually processes the audio signal at a 8K sampling rate according to the 4K voice range, such as sampling, encoding or amplifying, and transmits the processed audio signal after the processing is completed. In fact, the frequency range of the human voice audio signal does not reach 4K. Therefore, when the audio signal is processed, the sound or noise within the 4K frequency range and outside the frequency range of the human voice audio signal is also sampled, encoded, and amplified. ,transmission. [0003] The mobile terminal processes and transmits t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208
CPCG10L21/0208
Inventor 刘彦彬
Owner VIVO MOBILE COMM CO LTD