Loudspeaker compensation system and portable mobile terminal
A compensation system and mobile terminal technology, applied in the field of communication, can solve problems such as inability to pronounce, poor sound quality played by mobile terminals, low-frequency sound quality, etc., and achieve the effect of improving sound quality
Pending Publication Date: 2016-10-19
ZILLTEK TECH SHANGHAI +1
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However, as the speaker becomes thinner and thinner, the magnet will become smaller and smaller, and the effective magnetic field area formed by the magnet will decrease. The reduction in the effective magnetic field area will cause less loss during the transmission of medium and high frequency signals, but in low frequency signals, it will be easy The phenomenon of signal distortion or inability to pronounce sounds occurs, so the stroke of the low-frequency signal is longer (the higher the frequency, the shorter the stroke), the stroke length may exceed the effective magnetic field area formed by the magnet, and the cutting magnetic field line movement cannot be performed for the stroke exceeding the effective magnetic field area , resulting in signal distortion or no sound
As a result, the sound quality played by the mobile terminal is poor, especially the low-frequency sound quality is low
[0003] The prior art generally adopts two methods: the first technical solution is to set a power amplifier circuit at the front end of the loudspeaker to amplify the low-frequency signal, but this method only has the function of amplifying the low-frequency signal, and the amplified Whether there is distortion or other phenomena in the low-frequency signal, this technical solution cannot solve the problem
The second technical solution is to set a sensor on the basis of the previous solution, the sensor collects and detects the equivalent resistance of the speaker, and performs pre-compensation, but the distortion of this method is still very large
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[0020] The present invention will be further described below with reference to the drawings and specific embodiments, but it is not a limitation of the present invention.
[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0022] It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict.
[0023] The present invention will be further described below with reference to the drawings and specific emb
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The invention relates to the communication technology field and especially relates to a loudspeaker compensation system and a portable mobile terminal, which are applied to mobile terminal equipment. A loudspeaker, a microphone, a comparison unit and a power amplifier are included, wherein the microphone is used for detecting an audio signal broadcasted by the loudspeaker, forming a broadcast signal and outputting; the power amplifier arranges the microphone used for collecting sound broadcasted by the loudspeaker at a sound emitting direction of the loudspeaker, forms the broadcast signal and feeds back to the comparison unit; and the comparison unit determines whether a voice signal output by the loudspeaker has distortion according to a standard voice signal, forms a comparison result and outputs; the power amplifier forms a compensation signal according to the comparison result and outputs to the loudspeaker through an output terminal, detects the sound output by the loudspeaker and forms a feedback signal, and compares the feedback signal and acquires the comparison result; and the power amplifier outputs a compensation signal to compensate the signal output by the loudspeaker according to the comparison result so that tone quality of an audio signal output by the mobile terminal is increased.
Description
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