%Aigaion2 BibTeX export from Idiap Publications %Saturday 21 December 2024 05:59:57 PM @ARTICLE{Garner_SPECOM_2011, author = {Garner, Philip N.}, projects = {IM2}, month = oct, title = {Cepstral normalisation and the signal to noise ratio spectrum in automatic speech recognition}, journal = {Speech Communication}, volume = {53}, number = {8}, year = {2011}, pages = {991--1001}, doi = {http://dx.doi.org/10.1016/j.specom.2011.05.007}, crossref = {Garner_Idiap-RR-15-2011}, abstract = {Cepstral normalisation in automatic speech recognition is investigated in the context of robustness to additive noise. In this paper, it is argued that such normalisation leads naturally to a speech feature based on signal to noise ratio rather than absolute energy (or power). Explicit calculation of this SNR-cepstrum by means of a noise estimate is shown to have theoretical and practical advantages over the usual (energy based) cepstrum. The relationship between the SNR-cepstrum and the articulation index, known in psycho-acoustics, is discussed. Experiments are presented suggesting that the combination of the SNR-cepstrum with the well known perceptual linear prediction method can be beneficial in noisy environments.}, pdf = {https://publications.idiap.ch/attachments/papers/2011/Garner_SPECOM_2011.pdf} } crossreferenced publications: @TECHREPORT{Garner_Idiap-RR-15-2011, author = {Garner, Philip N.}, keywords = {aurora, Automatic Speech Recognition, cepstral normalisation, Noise Robustness}, projects = {IM2}, month = {5}, title = {Cepstral normalisation and the signal to noise ratio spectrum in automatic speech recognition.}, type = {Idiap-RR}, number = {Idiap-RR-15-2011}, year = {2011}, institution = {Idiap}, abstract = {Cepstral normalisation in automatic speech recognition is investigated in the context of robustness to additive noise. It is argued that such normalisation leads naturally to a speech feature based on signal to noise ratio rather than absolute energy (or power). Explicit calculation of this {\em SNR-cepstrum} by means of a noise estimate is shown to have theoretical and practical advantages over the usual (energy based) cepstrum. The SNR-cepstrum is shown to be almost identical to the articulation index known in psycho-acoustics. Combination of the SNR-cepstrum with the well known perceptual linear prediction method is shown to be beneficial in noisy environments.}, pdf = {https://publications.idiap.ch/attachments/reports/2010/Garner_Idiap-RR-15-2011.pdf} }