Signal processing method and device for converting monaural sound into stereo sound, equipment and medium

The embodiment of the invention discloses a signal processing method and device for converting monaural sound into stereo sound, equipment and a medium. The method comprises the following steps: acquiring a monaural audio signal, and carrying out filtering processing on the monaural audio signal to obtain a filtered signal; performing dynamic gain adjustment processing on the filtering signal to obtain a gain adjustment signal; processing the monaural audio signal based on the gain adjustment signal to obtain a left channel audio signal and a right channel audio signal; wherein the contents of the left channel audio signal and the right channel audio signal are different, and a signal obtained by adding the left channel audio signal and the right channel audio signal is a multiple of the single channel audio signal. According to the technical scheme, the monaural compatibility can be effectively ensured, the risk of information loss is avoided, and meanwhile, the defects that the sound field is not natural an