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 [BibTeX] [Marc21]
MDCT for Encoding Residual Signals in Frequency Domain Linear Prediction
Type of publication: Idiap-RR
Citation: Ganapathy_Idiap-RR-34-2009
Number: Idiap-RR-34-2009
Year: 2009
Month: 12
Institution: Idiap
Address: Rue Marconi 19. Martigny
Abstract: 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.
Projects Idiap
Authors Ganapathy, Sriram
Motlicek, Petr
Hermansky, Hynek
Crossref by Ganapathy_AES2009_2009
Added by: [ADM]
Total mark: 0
  • Ganapathy_Idiap-RR-34-2009.pdf (MD5: 0957aab30d2dfca5c651cf702223af8b)