Analysis filterbank, synthesis filterbank, encoder, de-coder, mixer and conferencing system

摘要

An embodiment of an analysis filterbank for filtering a plurality of time domain input frames, wherein an input frame comprises a number of ordered input samples, comprises a windower configured to generate a plurality of windowed frames, wherein a windowed frame comprises a plurality of windowed samples, wherein the windower is configured to process the plurality of input frames in an overlapping manner using a sample advance value, wherein the sample advance value is less than the number of ordered input samples of an input frame divided by two, and a time/frequency converter configured to provide an output frame comprising a number of output values, wherein an output frame is a spectral representation of a windowed frame.

主权项

id="REI-00003" date="20141216" 1. Analysis filterbank for filtering a plurality of time-domain input frames of an audio signal, an input frame comprising a number of ordered input samples, comprising:
a windower configured to generate a plurality of windowed frames, a windowed frame comprising a plurality of windowed samples, wherein the windower is configured to process the plurality of input frames in an overlapping manner using a sample advance value, wherein the sample advance value is less than the number of ordered input samples of an input frame divided by 2; and a time/frequency converter configured to provide an output frame comprising a number of output values, an output frame being a spectral representation of a windowed frame, wherein the windower or the time/frequency converter comprises a hardware implementation.