Audio encoding methods, encoding processing equipment, communication equipment, computer-readable storage media and chips

Abstract

The invention relates to a method of audio encoding, an encoding processing device, a communication device, a computer-readable storage medium, and a chip. This method involves: capturing the current frame of the audio signal, which includes both high-frequency and low-frequency signals; performing first-order encoding based on the high-frequency and low-frequency signals to obtain the first encoding parameter of the current frame; The second encoding is performed based on the high-frequency signal to obtain the second encoding parameter of the current frame, where the second encoding parameter indicates information about the tonal component of the high-frequency signal; adjustment, based on information about the tonal component of the high-frequency signal, of the received high-frequency signal spectrum is achieved through bandwidth expansion, to obtain the adjusted spectrum of the high-frequency signal; Perform third encoding based on the modulated spectrum of the high-frequency band signal to obtain the third encoding parameter; and perform bitstream multiplexing on the first, second, and third encoding parameters to obtain the encoded bitstream of the current frame.