DocumentCode :
3510155
Title :
An error robust Ultra Low Delay audio coder using an MA prediction model
Author :
Wabnik, Stefan ; Schuller, Gerald ; Kraemer, Ferenc
Author_Institution :
Inst. for Digital Media Technol., Fraunhofer IDMT, Ilmenau
fYear :
2009
fDate :
19-24 April 2009
Firstpage :
5
Lastpage :
8
Abstract :
This paper compares two prediction structures for predictive perceptual audio coding in the context of the ultra low delay (ULD) coding scheme. One structure is based on the commonly used AR signal model, leading to an IIR predictor in the decoder. The other structure is based on an MA signal model, leading to an FIR predictor in the decoder. We find that the AR-based predictor has a slightly better performance in case of an undisturbed transmission channel, but the MA-based predictor has a much better performance in case of transmission errors. For a bit error rate (BER) of 1.0e-5, the perceptual quality of the proposed MA model predictor achieves a mean objective difference grade (ODG) of -0.66 ODG whereas the AR model predictor only reaches -3.42 ODG.
Keywords :
audio coding; autoregressive processes; channel coding; decoding; error statistics; moving average processes; AR signal model; FIR predictor; IIR predictor; MA prediction model; autoregressive processes; bit error rate; decoder; error robust ultra low delay audio coder; moving average process; undisturbed transmission channel; Audio coding; Bit error rate; Decoding; Delay; Finite impulse response filter; Frequency; IIR filters; Predictive coding; Predictive models; Robustness; Autoregressive processes; Linear predictive coding; Low Delay Audio coding; Moving average processes; Robustness;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on
Conference_Location :
Taipei
ISSN :
1520-6149
Print_ISBN :
978-1-4244-2353-8
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2009.4959506
Filename :
4959506
Link To Document :
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