Convention Paper
Advances in Sinusoidal Analysis/Synthesis-based Error Concealment in Audio Networking
AES Convention 116 · Paper 5997 · May 2004
Abstract
This paper investigates error concealment based on sinusoidal
analysis and synthesis. Major shortcomings are identified with
focus on the extraction of sinusoidal frequency evolution and
sinusoid matching, and a new approach to frame loss concealment is
proposed. It involves parallel Fourier transformation with long
and short windows to accurately extract model parameters, and is
complemented with two sinusoid matching techniques -- sinusoidal
pair alignment by dynamic programming and harmonics-based
matching. Moreover, due to the incompatibility of sinusoidal
representation with broadband, noise-like signals, an alternative,
``sinusoids plus residual'' model is incorporated. The new
algorithm was applied to CD quality audio of various genres and
was demonstrated to improve the perceptual quality with
considerable gains for non-transient frames.
