Speaker displacement protection method and device, and computer-readable storage medium

A speaker displacement protection method, applied to a device comprising a power amplifier and a combination device comprising a speaker and a motor, comprising:

• creating a target transfer function based on a real-time amplitude of the speaker and a fusion voltage relative to the combination device;
• determining target gains according to the target transfer function and a predetermined displacement threshold;
• and
• performing gain processing on an original audio signal input to the combination device based on the target gains, so as to provide displacement protection for the speaker;
• wherein the determining the target gains according to the target transfer function and the predetermined displacement threshold comprises:
• according to a predetermined state equation, creating a first transfer function of the fusion voltage relative to the combination device and a first real-time voltage of the speaker;
• performing data fitting on the real-time amplitude of the speaker and the first real-time voltage of the speaker to create a second transfer function;
• and
• creating the target transfer function through combining the first transfer function and the second transfer function.