| Paper: | AE-L3.4 | ||
| Session: | Audio Signal Analysis, Modeling and Coding | ||
| Time: | Thursday, May 18, 15:00 - 15:20 | ||
| Presentation: | Lecture | ||
| Topic: | Audio and Electroacoustics: Broadband and Perceptual Coding | ||
| Title: | Computationally Efficient Amplitude Modulated Sinusoidal Audio Coding using Frequency-Domain Linear Prediction | ||
| Authors: | Mads G. Christensen, Søren Holdt Jensen, Aalborg University, Denmark | ||
| Abstract: | A 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 coefficient are quantized. As 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. | ||
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