Patent ID: 9734833
Date: 2017-08-15
CPC Classifications: G10L

Claim:
1. A decoder for generating an audio output signal comprising one or more audio output channels from a downmix signal comprising a plurality of time-domain downmix samples, wherein the downmix signal encodes two or more audio object signals, wherein the decoder comprises: a window-sequence generator for determining a plurality of analysis windows, wherein each of the analysis windows comprises a plurality of time-domain downmix samples of the downmix signal, wherein each analysis window of the plurality of analysis windows comprises a window length indicating the number of the time-domain downmix samples of said analysis window, wherein the window-sequence generator is configured to determine the plurality of analysis windows so that the window length of each of the analysis windows depends on a signal property of at least one of the two or more audio object signals, a time-frequency-analysis module for transforming the plurality of time-domain downmix samples of each analysis window of the plurality of analysis windows from a time-domain to a time-frequency domain depending on the window length of said analysis window, to acquire a transformed downmix, and an un-mixing unit for un-mixing the transformed downmix based on parametric side information on the two or more audio object signals to acquire the audio output signal.