Adaptive loudspeaker adjusting system and method

Abstract

The invention relates to the field of signal processing, in particular to an adaptive loudspeaker adjusting system and method. The method comprises the following steps that 1, an input signal is subjected to power amplification to output a driving signal for driving a loudspeaker; 2, the output transient current of a power amplification unit is acquired; 3, the transient impedance is calculated out according to the output transient current; and 4, when it is judged that the change rate of the transient impedance in a unit time is higher than a set threshold, the set threshold is lowered. According to the adaptive loudspeaker adjusting system and method, by acquiring the impedance of the loudspeaker in real time, circuit parameters are adaptively adjusted according to the change characteristic of the transient impedance, and therefore the loudspeaker can be protected from being burned out in real time while the audio performance is guaranteed.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a loudspeaker adjustment system and method. Background technique [0002] As portable devices become thinner and thinner, the internal space becomes smaller and smaller, and the installation space for speakers (or horns) is also smaller and smaller. Based on the working principle of speakers, the volume of speakers is the volume of air pushed per unit time , After the speaker becomes thinner, it means that the stroke of the diaphragm is bound to be reduced. Since the frequency sensed by the human ear is fixed, under this condition, in order to achieve the corresponding volume standard, it poses a great challenge to the design of the speaker. Contents of the invention [0003] The object of the present invention is to provide a loudspeaker adaptive adjustment system and method to solve the above problems. [0004] A loudspeaker adaptive adjustment system, comprising, [0005] ...

AI Technical Summary

Problems solved by technology

[0002] As portable devices become thinner and thinner, the internal space becomes smaller and smaller, and the installation space for speakers (or horns) is also smaller and smaller. Based on the working principle of speakers, the volume of speakers is the volume of air pushed per unit time , after the speaker becomes thinner, it means that the travel of the diaphragm is bound to be reduced. Since the frequency sensed by the human ear is fixed, under this condition, in order to achieve the corresponding volume standard, it poses a great challenge to the design of the speaker.

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