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Verfahren und Vorrichtung zur skalierbaren Codierung von Audiosignalen

Audio signal coding method - codes audio signals with low bit rate and delay to provide low quality signal and with high bit rate and delay to provide high quality signal.
 
: Grill, B.; Seitzer, D.; Brandenburg, K.

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Frontpage ()

DE 1995-19537338 A: 19951006
DE 1995-19537338 A: 19951006
EP 1996-930044 A: 19960816
WO 1996-EP3609 A: 19960816
DE 1995-19549621 A: 19951006
DE 19537338 C1: 19970313
DE 19549621 C2: 19970313
EP 846375 B2: 20040811
H03M0007
H04B0001
German
Patent, Electronic Publication
Fraunhofer IDMT ()

Abstract
The coding method has a lower quality coded signal provided by coding the audio signals with a relatively low bit rate and low delay time and a higher quality coded signal provided by coding the audio signals with a relatively high bit rate and delay time, with either signal selectively transmitted to a decoder. Pref. the lower quality signal is decoded and the audio signal is delayed by the delay resulting from coding at the lower bit rate and the decoding time, to allow the signals to be compared, the obtained difference coded at the higher bit for transmission to the decoder after transmission of the lower quality coded signal. USE - For scalable audio coding.

: http://publica.fraunhofer.de/documents/PX-38726.html