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Mobile phone loudspeaker circuit and mobile terminal

A loudspeaker and mobile phone technology, which is applied in the field of communication, can solve the problems that users can't hear clearly, can't hear clearly, and the sound of mobile phones is small

Inactive Publication Date: 2011-11-02
BEIJING BENY WAVE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the sound of mobile phones is relatively small, generally below 100 decibels. In public places, if you want to answer incoming calls or play music, radio and other audio, users usually cannot hear clearly.
Especially for the elderly, for mobile phones with a sound below 100 decibels, even in a relatively quiet environment, the elderly may not be able to hear the ringtone of the incoming call or the voice of the other party in the call, which may require the other party to constantly repeating what has been said, causing great distress to users on both sides of the phone
[0003] In the prior art, earphones are generally used to solve the problem of low sound in mobile phones. This requires users to carry earphones with them. When playing music or answering calls, the earphones must first be pulled out. It brings great inconvenience to the user, and increases the cost borne by the user to purchase earphones

Method used

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  • Mobile phone loudspeaker circuit and mobile terminal
  • Mobile phone loudspeaker circuit and mobile terminal
  • Mobile phone loudspeaker circuit and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The first embodiment provides a mobile phone speaker circuit, such as Figure 1A Shown is a schematic structural diagram of a mobile phone speaker circuit 100 according to the first embodiment. The mobile phone speaker circuit 100 includes an audio input terminal 101 , a class D audio power amplifier 102 and a speaker 103 .

[0031] Wherein, the audio input terminal 101 is used for obtaining audio signals from a built-in player and providing them to the class D audio power amplifier 102 . There are many ways to realize the built-in player, such as MP3 and so on. The class D audio power amplifier 102 is connected between the audio input terminal 101 and the speaker 103 for amplifying the audio signal; the speaker 103 is used for receiving the audio signal amplified by the class D power amplifier 102 and outputting sound according to the amplified audio signal. The working principle of the class D audio power amplifier 102 is: the input audio signal is modulated by the mo...

Embodiment 2

[0037] The present embodiment two provides the mobile phone loudspeaker circuit that embodiment one is improved, as image 3 Shown is a schematic structural diagram of the mobile phone speaker circuit 200 according to the second embodiment.

[0038]The mobile phone speaker circuit 200 includes: a magnetic bead 250 connected between the class-D audio power amplifier 102 and the speaker 103. The other structures of the mobile phone speaker circuit 200 are the same as those in Embodiment 1, and will not be repeated here.

[0039] The magnetic bead 250 is used to improve the compatibility of the class D audio power amplifier 102, reduce its electromagnetic interference to other functions of the mobile phone, and make the sound output by the speaker 103 clearer. This is because the radio frequency energy is an AC sine wave component superimposed on the DC transmission level, and the DC component is a useful signal required by the speaker circuit 200 of the mobile phone, while the r...

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Abstract

The invention discloses a mobile phone loudspeaker circuit and a mobile terminal. The circuit comprises the following parts: an audio input terminal used for obtaining an audio signal and providing the signal to a D type audio frequency amplifier; the D type audio frequency amplifier which connects the audio input terminal and a loudspeaker and is used for amplifying the audio signal; and the loudspeaker used for receiving an amplified audio signal and emitting sound based on the amplified audio signal. According to the mobile phone loudspeaker circuit and the mobile terminal provided in the invention, sound outputted by the loudspeaker can be amplified through the D type audio frequency amplifier to satisfy demands of the elderly or people with poor hearing.

Description

technical field [0001] The invention relates to communication technology, in particular to a mobile phone loudspeaker circuit and a mobile terminal. Background technique [0002] In the prior art, the sound of mobile phones is relatively small, generally below 100 decibels. In public places, if you want to answer incoming calls or play music, radio and other audio, users usually cannot hear clearly. Especially for the elderly, for mobile phones with a sound below 100 decibels, even in a relatively quiet environment, the elderly may not be able to hear the ringtone of the incoming call or the voice of the other party in the call, which may require the other party to constantly Repeating what has been said is very annoying to users on both sides of the phone. [0003] In the prior art, earphones are generally used to solve the problem of low sound in mobile phones. This requires users to carry earphones with them. When playing music or answering calls, the earphones must firs...

Claims

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Application Information

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IPC IPC(8): H04M1/60H04M1/725
Inventor 连东峰
Owner BEIJING BENY WAVE SCI & TECH
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