Voice signal encoding and decoding method, device, and codec system

A voice signal encoding device, comprising:

• a first processing module, configured to encode an input voice signal to obtain a broadband code stream, wherein the broadband code stream comprises a core layer bit stream and an extension enhancement layer bit stream;
• a second processing module, configured to compress the core layer bit stream to obtain a compressed code stream;
• and
• a third processing module, configured to pack the compressed code stream and the extension enhancement layer bit stream to obtain a packed code stream.

A voice signal decoding method, comprising:

• acquiring header information in a packed code stream;
• unpacking the packed code stream according to the header information, to obtain an extension enhancement layer bit stream and a compressed core layer bit stream;
• decompressing the compressed core layer bit stream to obtain a decompressed code stream;
• and
• performing decoding reestablishment on the extension enhancement layer bit stream and the decompressed code stream, to obtain a broadband reestablished voice signal.

A voice signal decoding device, comprising:

• an acquisition module, configured to acquire header information in a packed code stream;
• an unpacking module, configured to unpack the packed code stream according to the header information, to obtain an extension enhancement layer bit stream and a compressed core layer bit stream;
• a decompression module, configured to decompress the compressed core layer bit stream to obtain a decompressed code stream;
• and
• a reestablishment module, configured to perform decoding reestablishment on the extension enhancement layer bit stream and the decompressed code stream, to obtain a broadband reestablished voice signal.