@InProceedings{Schäfer2009_285,
<br/>   author = {Magnus Schäfer and Hauke Krüger and Peter Vary},
<br/>   booktitle = {Studientexte zur Sprachkommunikation: Elektronische Sprachsignalverarbeitung 2009},
<br/>   title = {Extending Monaural Speech and Audio Codecs by Inter-Channel Linear Prediction},
<br/>   year = {2009},
<br/>   editor = {Rüdiger Hoffmann},
<br/>   month = mar,
<br/>   pages = {166--173},
<br/>   publisher = {TUDpress, Dresden},
<br/>   abstract  = {In this contribution, we propose the application of a novel concept for a flexible
hierarchical stereo extension of existing monaural speech and audio codecs. The
concept is based on inter-channel linear prediction of the left and right channels
from a sum signal and allows for a very flexible extension of existing speech and
audio codecs. In contrast to theoretical examinations in earlier publications, a stereo
codec is built in this contribution by combining the new stereo framing with the core
transmission of the standardized Adaptive Multi Rate - WideBand codec (AMRWB)
in a hierarchical manner. The proposed modification introduces just marginal
additional system delay compared to mono AMR-WB.
It will be shown by simulations that compared to an individual transmission of
left and right channel, the application of the inter-channel linear prediction concept
achieves an identical quality at a significantly lower data rate for an important class
of stereo signals. This is due to a concentration of most of the signal energy in the
sum signal and the filter coefficients while the prediction error is of lesser importance
for the quality. This will be shown by gradually decreasing the transmission
data rate for the prediction error to the point of a purely parametric solution where
only the sum signal and the filter coefficients are transmitted.},
<br/>   isbn = {978-3-941298-31-6},
<br/>   issn = {0940-6832},
<br/>   keywords = {Signalverarbeitung},
<br/>   url = {https://www.essv.de/pdf/2009_166_173.pdf},
<br/>}