CONF hynek-rr-05-18a/IDIAP Multi-resolution RASTA filtering for TANDEM-based ASR Hermansky, Hynek Fousek, Petr EXTERNAL http://publications.idiap.ch/attachments/reports/2005/rr05-18.pdf PUBLIC http://publications.idiap.ch/index.php/publications/showcite/hynek-rr-05-18 Related documents Proceedings of Interspeech 2005 2005 IDIAP-RR 2005-18 New speech representation based on multiple filtering of temporal trajectories of speech energies in frequency sub-bands is proposed and tested. The technique extends earlier works on delta features and RASTA filtering by processing temporal trajectories by a bank of band-pass filters with varying resolutions. In initial tests on OGI Digits database the technique yields about 30\% relative improvement in word error rate over the conventional PLP features. Since the applied filters have zero-mean impulse responses, the technique is inherently robust to linear distortions. REPORT hynek-rr-05-18/IDIAP Multi-resolution RASTA filtering for TANDEM-based ASR Hermansky, Hynek Fousek, Petr EXTERNAL http://publications.idiap.ch/attachments/reports/2005/rr05-18.pdf PUBLIC Idiap-RR-18-2005 2005 IDIAP Published in Interspeech 2005 New speech representation based on multiple filtering of temporal trajectories of speech energies in frequency sub-bands is proposed and tested. The technique extends earlier works on delta features and RASTA filtering by processing temporal trajectories by a bank of band-pass filters with varying resolutions. In initial tests on OGI Digits database the technique yields about 30\% relative improvement in word error rate over the conventional PLP features. Since the applied filters have zero-mean impulse responses, the technique is inherently robust to linear distortions.