Methods and apparatus for encoding audio signals, methods and apparatus for decoding audio signals, and computer-readable storage media.

Abstract

The invention relates to a method and apparatus for encoding and decoding audio signals, to improve the encoding quality and the efficiency of audio signal recovery. The proposed solutions for encoding audio signals include: a step based on the spectrum of M blocks of the current frame of the audio signal to be encoded; M instantaneous state identifiers of M blocks, where M blocks include the first block; and the instantaneous state identifier of the first block indicating that the first block is an instantaneous state block, or indicating that the first block is a non-instant state block; a step to obtain group information of M blocks based on M instantaneous state identifiers of M blocks; and a step to perform grouping and sorting on the spectrum of M blocks based on the group information of M blocks, to obtain the spectrum to be encoded of the current frame. The spectral encoding step will be encoded using a coding neural network to obtain the spectral encoding result;and the step of recording the spectral encoding result into the bit stream.