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Noise reduction method and handheld mobile terminal

A mobile terminal and mobile terminal communication technology, applied in the field of handheld mobile terminals, can solve problems such as low confidentiality, and achieve the effect of eliminating sound signals

Inactive Publication Date: 2014-09-10
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a noise reduction method and a handheld mobile terminal to solve the technical problem of low confidentiality existing in the prior art when using a normal mode to answer a call

Method used

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  • Noise reduction method and handheld mobile terminal
  • Noise reduction method and handheld mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the embodiment of the present application, a noise reduction method is proposed.

[0029] Further, the method is applied to the first handheld mobile terminal. In the embodiment of the present application, the first finger mobile terminal may be a mobile phone or a PAD.

[0030] Further, the first handheld mobile terminal is provided with an answering module, and a first audio playback unit is arranged inside the answering module, which is used to play the audio of the second handheld mobile terminal when the first handheld mobile terminal communicates with the second handheld mobile terminal. For the sent first sound signal, at least one second audio playback unit is arranged on the listening module.

[0031] The following example illustrates that if the first handheld mobile terminal is a mobile phone, the mobile phone has a microphone and a receiver. When two mobile phones communicate, the microphone can transmit the voice of the user to the other party, and the r...

Embodiment approach

[0045] The specific implementation method is as follows:

[0046] Based on the first phase parameter, a second phase parameter is obtained.

[0047] In the embodiment of the present application, the phase difference between the second phase parameter and the first phase parameter is Kλ / 2, where K is an integer greater than or equal to 1, and λ is the wavelength of the first sound signal. For example, when K=1, the difference between the second phase parameter and the first phase parameter is only half the wavelength of the first sound signal.

[0048] Based on the second phase parameter, a second sound signal is generated.

[0049] Specifically, other parameters of the generated second sound signal are the same as those of the first sound signal, such as wavelength, period, frequency, etc., and only differ in phase parameters.

[0050] The specific description is as image 3 shown in image 3 In , the first sound signal is represented by a solid line, and the second sound ...

Embodiment 2

[0061] In the embodiment of the present application, a handheld mobile terminal is provided.

[0062] Further, the handheld mobile terminal is provided with an answering module.

[0063] Further, the answering module is provided with a first audio playback unit, which is used to play the first sound signal sent by the second handheld mobile terminal when the handheld mobile terminal communicates with the second handheld mobile terminal, and the answering module is provided with At least one second audio playback unit.

[0064] More specifically, the answering module in the handheld mobile terminal and its internal structure are as follows: figure 1 As shown, this application will not repeat them here.

[0065] See below Figure 4 , the handheld mobile terminal specifically includes:

[0066] The collecting unit 401 is configured to collect a first related parameter of the first sound signal.

[0067] The obtaining unit 402 is configured to generate a second sound signal w...

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Abstract

The invention discloses a noise reduction method and a handheld mobile terminal. The method is applied to a first handheld mobile terminal. An answering module is arranged in the first handheld mobile terminal. A first audio playing unit is arranged in the answering module, and the first audio playing unit is used for playing a first voice signal sent by a second handheld mobile terminal when the first handheld mobile terminal communicates with the second handheld mobile terminal. At least one second audio playing unit is arranged on the answering module. The method comprises the following steps: collecting a first related parameter of the first voice signal; generating a second voice signal provided with a second related parameter based on the first related parameter, wherein the second related parameter of the second voice signal is matched with the first related parameter; and outputting the second voice signal through the at least one second audio playing unit to reduce noise of the first voice signal.

Description

technical field [0001] The present invention relates to the field of electronic technology, in particular to a noise reduction method and a handheld mobile terminal. Background technique [0002] At present, with the continuous development of electronic technology, more and more different types of electronic devices have been put into use in various fields, and have greatly enriched people's lives. Taking a mobile phone as an example, in the use of the mobile phone, the user can use the mobile phone to communicate, or take pictures, surf the Internet and so on. [0003] In mobile phone communication, for example, when user A wants to contact user B, mobile phone A can be used to communicate with mobile phone B to which user B belongs. During the communication process, the microphone in mobile phone A will convert user A's voice into an electrical signal, and transmit it to mobile phone B for conversion through space transmission, so that user B can hear user A's voice and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/0208H04M1/725
Inventor 朱少峰
Owner LENOVO (BEIJING) LTD
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