MDCT for Encoding Residual Signals in Frequency Domain Linear Prediction

Ganapathy S, Motlicek P, Hermansky H. MDCT for Encoding Residual Signals in Frequency Domain Linear Prediction. In: AES Convention 127. Audio Engineering Society; 2009. Paper 7921. Available from: https://aes.org/publications/elibrary-page/?id=15116

@inproceedings{Ganapathy2009_15116,
  author = {Ganapathy, Sriram and Motlicek, Petr and Hermansky, Hynek},
  title = {{MDCT for Encoding Residual Signals in Frequency Domain Linear Prediction}},
  booktitle = {AES Convention 127},
  note = {Paper 7921},
  year = {2009},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15116}
}

TY  - CPAPER
TI  - MDCT for Encoding Residual Signals in Frequency Domain Linear Prediction
AU  - Ganapathy, Sriram
AU  - Motlicek, Petr
AU  - Hermansky, Hynek
T2  - AES Convention 127
M1  - Paper 7921
PY  - 2009
DA  - 2009/10/06
UR  - https://aes.org/publications/elibrary-page/?id=15116
PB  - Audio Engineering Society
LA  - en
AB  - Frequency domain linear prediction (FDLP) uses autoregressive models to represent Hilbert envelopes of relatively long segments of speech/audio signals. Although the basic FDLP audio codec achieves good quality of the reconstructed signal at high bit-rates, there is a need for scaling to lower bit-rates without degrading the reconstruction quality. Here, we present a method for improving the compression efficiency of the FDLP codec by the application of the modified discrete cosine transform (MDCT) for encoding the FDLP residual signals. In the subjective and objective quality evaluations, the proposed FDLP codec provides competent quality of reconstructed signal compared to the state-of-the-art audio codecs for the 32 − 64 kbps range.
ER  -