Patent ID: 7302005

Claim:
A method for encoding of a n-channel digital audio signal, where n is an integer larger than 1, said method the steps of: encoding each channel signals of the n-channel digital audio signal so as to obtain an encoded channel signal for each of said channel signals in response to probability values for each of said channel signals; carrying out a prediction filtering on each of said channel signals in response to a set of prediction filter coefficients for each of said channel signals so as to obtain a prediction filtered channel signal from each of said channel signals; generating a set of prediction filter coefficients for each of said channel signals; generating probability values for each of said channel signals in response to a probability table for each of said channel signals and the corresponding prediction filtered channel signal for each of said channel signals; generating the probability tables for each of said channel signals; generating first mapping information for a plurality of m sets of prediction filter coefficients, where m is an integer for which holds 1≦m≦n, said first mapping information and m sets of prediction filter coefficients being representative of said n sets of prediction filter coefficients for said n channels; generating second mapping information for a plurality of p probability tables, where p is an integer for which holds 1≦p≦n, said second mapping information and p probability tables being representative of said n probability tables for said n channels; combining said encoded channel signal for each of said channel signals, said first and second mapping informations said plurality of m sets of prediction filter coefficients and said plurality of p probability tables into a composite information signal; and outputting said composite information signal as the encoded n-channel digital audio signal.