Patent ID: 8068569

Claim:
A method for processing a signal, comprising: obtaining, by an audio coding apparatus, a parameter; entropy-decoding, by an audio coding apparatus, the parameter according to a particular entropy coding scheme from among multiple entropy coding schemes including at least one of a one-dimensional scheme and a two-dimensional scheme, the two-dimensional scheme including at least one of a time grouping scheme and a frequency grouping scheme; and data-decoding, by an audio coding apparatus, the entropy-decoded parameter according to a particular data coding scheme from among multiple data coding schemes including at least one of a pilot coding scheme, a time difference scheme and a frequency difference scheme, wherein: the time grouping scheme is used to entropy-encode or entropy-decode data based on time pairing of time direction, the frequency grouping scheme is used to entropy-encode or entropy-decode data based on frequency pairing of frequency direction, the pilot coding scheme is used to data-encode or data-decode data elements of a current group included in a current frame using a pilot reference value and one or more pilot difference values, 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, each pilot difference value corresponds to each data element of the current group, the time difference scheme is used to data-encode or data-decode data elements using a time reference value and a time difference value which are calculated in a time axis, and the frequency difference scheme is used to data-encode or data-decode data elements using a frequency reference value and a frequency difference value which are calculated in a frequency axis, a quantity of the time reference values or the frequency reference values is less than a quantity of the data elements, and each time reference value or each frequency reference value corresponds to each data element.