Sound signal processing method and mobile terminal

A sound signal, mobile terminal technology, applied in speech analysis, instruments, etc., can solve the problem of difficult to suppress or eliminate howling sound to ensure the quality of human voice, and achieve the effect of good user experience

Inactive Publication Date: 2017-03-29
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a sound signal processing method and a mobile terminal to solve the problem in the prior art that it is difficult to suppress or eliminate howling sound while ensuring the quality of human voice

Method used

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  • Sound signal processing method and mobile terminal
  • Sound signal processing method and mobile terminal
  • Sound signal processing method and mobile terminal

Examples

Experimental program
Comparison scheme
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no. 1 example

[0032] Such as figure 1 Shown is a flow chart of the first embodiment of the method for processing sound signals of the present invention. The processing method of the sound signal comprises:

[0033] Step 101, acquiring a first sound signal collected by a microphone of a mobile terminal.

[0034] In the embodiment of the present invention, the first sound signal is collected by the microphone of the mobile terminal, and the first sound signal includes all sounds collected by the microphone in real time, such as human voice, music played by audio equipment, and the like. The first sound signal is obtained for further processing.

[0035] Step 102, calculating the short-term zero-crossing rate of the first sound signal.

[0036] In the embodiment of the present invention, the short-term zero-crossing rate of the first sound signal is calculated. Knownly, the zero-crossing rate (zero-crossing rate, ZCR) refers to the ratio of a sign change of a signal, for example, the signal...

no. 2 example

[0051] Such as figure 2 Shown is a flowchart of the second embodiment of the sound signal processing method of the present invention. The processing method of the sound signal comprises:

[0052] Step 201, acquiring a first sound signal collected by a microphone of a mobile terminal.

[0053] Step 202, calculating the short-term zero-crossing rate of the first sound signal.

[0054] Step 203, removing the low-frequency part and the high-frequency part of the first sound signal to obtain a second sound signal.

[0055] Steps 201 to 203 are the same as the corresponding steps in the first embodiment of the sound signal processing method of the present invention, and will not be repeated here.

[0056] Step 204, performing fast Fourier transform on the second sound signal to obtain spectrum data of the second sound signal.

[0057] In the embodiment of the present invention, since the Fourier transform expresses various forms of signals with sinusoidal signals, the spectral da...

no. 3 example

[0080] Such as image 3 Shown is a structural block diagram of the first embodiment of the mobile terminal of the present invention. The mobile terminal 300 can implement the steps of the first embodiment of the sound signal processing method of the present invention, wherein the mobile terminal 300 includes a first acquisition module 301, a calculation module 302, a first filter module 303, and a second acquisition module 304 , a mute module 305 , a third acquisition module 306 , a second filter module 307 and an amplification module 308 .

[0081] The first obtaining module 301 is connected with the computing module 302 and is used for obtaining the first sound signal collected by the microphone of the mobile terminal.

[0082] In the embodiment of the present invention, the first sound signal is collected by the microphone of the mobile terminal, and the first sound signal includes all sounds collected by the microphone in real time, such as human voice, music played by au...

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Abstract

The embodiment of the invention discloses a sound signal processing method. The sound signal processing method comprises the steps of obtaining a first sound signal acquired by a microphone of a mobile terminal; calculating the short-time zero-crossing rate of the first sound signal, wherein the short-time zero-crossing rate comprises the zero-crossing rate of sounds within 5ms-15ms; removing a low-frequency part and a high-frequency part of the first sound signal so as to acquire a second sound signal; acquiring energy data of the second sound signal; removing a non-speech part of the second sound signal according to the short-time zero-crossing rate and the energy data so as to acquire a third sound signal; acquiring a whistle signal of the third sound signal; removing a single-frequency signal of the whistle signal in the third sound signal so as to acquire a fourth sound signal; and amplifying the fourth sound signal. The invention further discloses a corresponding mobile terminal. The sound signal processing method disclosed by the embodiment of the invention realizes combined human sound recognition, ensures the play quality of a human sound while suppressing or removing whistle sounds, and acquires better user experience.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a sound signal processing method and a mobile terminal. Background technique [0002] As users rely more and more on portable mobile terminals, especially mobile phones, the utilization rate of mobile terminals is also increasing. Among them, more and more users use external audio equipment connected to mobile terminals for entertainment such as real-time singing and recording synthesis. For example, applications such as mobile KTV can be installed in mobile terminals, so that users can sing and entertain in KTV-like occasions. It can be said that mobile KTV has brought more fun and convenience to users' leisure and entertainment life. [0003] In the prior art, when using a mobile terminal and audio equipment for singing entertainment, because the sound of the audio equipment is generally relatively loud, its audio sound will be mixed with the human voice sung by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208G10L21/0216
CPCG10L21/0208G10L21/0216G10L2021/02166
Inventor 申厚拯
Owner VIVO MOBILE COMM CO LTD
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