Patent ID: 7761303
Filing Date: 2010-07-20
Classification: G10L,H04R,H04S

Abstract:
1. A method of decoding an audio signal performed by an audio coding system, comprising: receiving an audio signal including at least one frame, the frame comprising at least one time slot and at least one parameter set; determining whether a Low Frequency Enhancement (LFE) mode is selected, the LFE mode being different from a normal mode for an LFE channel; extracting time slot information in variable bit length, the time slot information indicating a time slot to which a parameter set is applied; extracting LFE parameter band information in fixed bit length, the LFE parameter band information indicating a number of parameter bands for the LFE channel; and decoding the audio signal by applying the parameter of the parameter set to a parameter band of the time slot, based on the LFE parameter band information and the time slot information, wherein the process of extracting the time slot information comprises: