Patent ID: 11894002
Assignee: DOLBY INTERNATIONAL AB
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. Method of audio decoding for processing a time discrete input audio signal, comprising:
receiving, at an analysis filterbank input of an analysis filterbank, the time discrete input audio signal;
analysis filtering, by the analysis filterbank, the time discrete input audio signal to acquire and output a plurality of first subband signals, wherein the analysis filterbank comprises a number of analysis filterbank channels;
receiving, at a synthesis filterbank input of a synthesis filterbank, a group of first subband signals of the plurality of first subband signals;
synthesis filtering, by the synthesis filterbank, the group of first subband signals of the plurality of first subband signals to synthesize a time discrete audio intermediate signal and to output, at the synthesis filterbank output, the time discrete audio intermediate signal, wherein the group of first subband signals comprises a smaller number of subband signals than the number of analysis filterbank channels of the analysis filterbank,
wherein the time discrete audio intermediate signal has a bandwidth being smaller than a bandwidth of the time discrete input audio signal, or
wherein a sampling rate of the time discrete audio intermediate signal is smaller than a sampling rate of the time discrete input audio signal.