Time-alignment of QMF based processing data
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United States of America Patent
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Oct 20, 2020
Grant Date -
Jan 25, 2018
app pub date -
Sep 29, 2017
filing date -
Sep 12, 2013
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Abstract
The present document relates to time-alignment of encoded data of an audio encoder with associated metadata, such as spectral band replication (SBR) metadata. An audio decoder configured to determine a reconstructed frame of an audio signal from an access unit of a received data stream is described. The access unit comprises waveform data and metadata, wherein the waveform data and the metadata are associated with the same reconstructed frame of the audio signal. The audio decoder comprises a waveform processing path configured to generate a plurality of waveform subband signals from the waveform data, and a metadata processing path configured to generate decoded metadata from the metadata.
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