Patent ID: 7643562

Claim:
A method for processing a signal using pilot based coding (PBC), the method comprising: extracting, by an audio coding apparatus, mode information which indicates whether a parameter set is encoded; when the mode information indicates that the parameter set is encoded, obtaining a pilot reference value and one or more pilot difference values; obtaining data elements of a current group included in a current frame using the pilot reference value and the pilot difference values, without using data elements of an other frame; and reconstructing a signal using the data elements of the current group, wherein: the pilot reference value is dependent on each of the data elements of the current group, and is not dependent on the data elements of the other frame, a quantity of the pilot difference values is equal to a quantity of the data elements of the current group; the pilot reference value is a single value which applies to all of the data elements of the current group, and each pilot difference value corresponds to each data element of the current group.