Improvements to the switched parametric and transform audio coder

S.N. Levine, J.O. Smith
Proceedings of the 1999 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics. WASPAA'99 (Cat. No.99TH8452)  
In this paper, we introduce improvements to previous sines + transients + noise audio modeling systems, including new sinusoidal trajectory selection and quantization procedures. In previous work [1], the audio is first segmented into transient and non-transient regions. The transient region is modeled using traditional transform coding techniques, while the non-transient regions are modeled using parametric sines plus noise modeling. Because such a system contains a mix of parametric and
more » ... rametric techniques, compressed-domain processing such as time-scale modifications are possible.
doi:10.1109/aspaa.1999.810845 fatcat:2t6ncusphzef7gkguklfzks73y