Patent ID: 9685168
Date: 2017-06-20
CPC Classifications: G10L,H04B,H04R,H04S

Claim:
1. A method of obtaining parameters for use in decoding a down-mixed mono signal, the method comprising: receiving a bitstream transmitted from an encoding end; and decoding, from the bitstream, a plurality of parameters including a channel level difference and an interchannel phase difference, wherein the interchannel phase difference indicates a phase difference between channels, wherein the interchannel phase difference is decoded by obtaining an index for a Largest Absolute Value (LAV) of the interchannel phase difference from the bitstream, obtaining the LAV of the interchannel phase difference from the index, determining a Huffman Codebook based on the LAV, decoding symbols of the interchannel phase difference based on the determined Huffman codebook, and obtaining a quantized interchannel phase difference from the decoded symbols.