12th Annual Conference of the International Speech Communication Association

Florence, Italy
August 27-31. 2011

Frequency-Warped and Stabilized Time-Varying Cepstral Coefficients

Trond Skogstad, Torbjørn Svendsen

NTNU, Norway

This paper presents a set of cepstral parameters based on timevarying linear prediction. The lattice filter structure is utilized to accommodate efficient stabilization of models and a Bark-like warped frequency scale. As the proposed cepstral features are based on non-stationary spectral analysis there is a potential for complementary information not captured in conventional features. In classification and recognition experiments, the proposed features are shown to improve performance when augmenting MFCCs.

Full Paper

Bibliographic reference.  Skogstad, Trond / Svendsen, Torbjørn (2011): "Frequency-warped and stabilized time-varying cepstral coefficients", In INTERSPEECH-2011, 2505-2508.