Subband Modulator Kalman Filtering for Single Channel Speech Enhancement
2013 (English)Conference paper (Refereed) Published
his paper presents a single channel speech enhancement technique based on sub-band modulator Kalman filtering for laryngeal (normal) and alaryngeal (Esophageal speech) speech signals. The noisy speech signal is decomposed into sub-bands and subsequently each sub-band is demodulated into its modulator and carrier components. Kalman filter is applied to modulators of all sub-bands without altering the carriers. Performance of the proposed system has been validated by Mean Opinion Score (MOS) for laryngeal and Harmonic to Noise Ratio (HNR) for alaryngeal speech. An improvement of 20% has been observed in MOS over sub-band Kalman filtering for laryngeal speech, while 3 to 4 dB enhancement in HNR has been observed for alaryngeal speech over the full-band Kalman filtering.
Place, publisher, year, edition, pages
Vancouver, Canada: IEEE , 2013.
Kalman filter, Autoregressive, speech enhancement
IdentifiersURN: urn:nbn:se:bth-6856DOI: 10.1109/ICASSP.2013.6639109Local ID: oai:bth.se:forskinfo206E94042A5DABF9C1257C2A003E409DOAI: oai:DiVA.org:bth-6856DiVA: diva2:834407
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)