Patent ID: 8554568
Filing Date: 2013-10-08
Classification: G10L,G11B,H04S

Abstract:
1. A method of decoding an audio signal, comprising: receiving the audio signal including a prediction residual of a block of digital audio data and a prediction coefficient value; obtaining table index information from the digital audio data, the table index information identifying a table to select from a plurality of stored entropy parameter tables; selecting one of the stored entropy parameter tables for entropy decoding the prediction coefficient value based on the table index information, each stored entropy parameter table including offset values and entropy parameters, each offset having a corresponding entropy parameter, wherein each offset is associated with a coded-coefficient and is different for each coded-coefficient if the coded-coefficient value is less than 20; first entropy decoding the prediction coefficient value in the received audio signal based on the selected entropy parameter table; converting the coded-coefficient values into linear predictive coding (LPC) coefficients; predicting current data samples in a block based on the LPC coefficients; second entropy decoding the prediction residual based on another entropy parameter; and decoding data samples based on the predicted current data samples and the prediction residual received from the audio signal.