Nonlinear compensation method, system and device for loudspeaker and storage medium

Abstract

The embodiment of the invention discloses a nonlinear compensation method for a loudspeaker. The nonlinear compensation method comprises the following steps: acquiring terminal voltage of the loudspeaker at the previous moment of the current moment; acquiring a state variable of the loudspeaker at the current moment according to the terminal voltage; acquiring a to-be-processed signal, modifying original linear parameters of the loudspeaker, and performing linear processing on the to-be-processed signal according to the modified linear parameters to acquire a linear processing signal; and performing nonlinear processing on the linear processing signal according to a nonlinear parameter of a loudspeaker and the state variable at the current moment to obtain a nonlinear signal, and outputting the nonlinear signal to the loudspeaker. The invention further discloses a nonlinear compensation system and device of the loudspeaker and a storage medium, the output tone quality of the loudspeaker can be effectively improved, and the service life of the loudspeaker is prolonged.

Description

technical field [0001] The present invention relates to the technical field of loudspeakers, in particular to a nonlinear compensation method, system, equipment and storage medium for loudspeakers. Background technique [0002] Loudspeakers are inherently non-linear, causing fundamental frequency compression at large signals, and this nonlinearity is usually related to the physical limitations of the loudspeaker and the properties of the materials used. Among them, the nonlinearity of the mechanical resistance plays a major role in the compression of the fundamental frequency at the resonance frequency, while the nonlinearity of the force factor and the stiffness of the mechanical suspension not only causes the compression of the fundamental frequency below the resonance frequency, but also produces a displacement DC. In addition, the nonlinearity of the force factor and the stiffness of the mechanical suspension determines the total harmonic distortion of the resonance freq...

AI Technical Summary

Problems solved by technology

[0003] In the application of loudspeaker nonlinear compensation, while nonlinear distortion is being compensated, nonlinear compression is also released. At this time, the displacement amplitude of the loudspeaker under the large signal will exceed the physical limit of the actual loudspeaker, especially at the resonant frequency. Abnormal sound such as bottoming, or even permanent damage

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