Computationally Efficient Amplitude Modulated Sinusoidal Audio Coding using Frequency-Domain Linear Prediction

M. G. Christensen, S. H. Jensen

AbstractA method for amplitude modulated sinusoidal audio coding is
presented that has low complexity and low delay. This is based on a subband processing system, where, in each subband, the signal is modeled as an amplitude modulated sum of sinusoids. The envelopes are estimated using frequency-domain linear prediction and the prediction coefficients are quantized. As a proof of concept, we evaluate different configurations in a subjective listening test, and this shows
that the proposed method offers significant improvements in sinusoidal
coding. Furthermore, the properties of the frequency-domain linear
prediction-based envelope estimator are analyzed.
TypeConference paper [With referee]
ConferenceInternational Conference on Acoustics, Speech, and Signal Processing
BibTeX data [bibtex]
IMM Group(s)Other

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