Robust speech parameters located in the frequency domain
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In this paper, two ways of obtaining more robust spectral parameters are explored. Firstly, an hybridization of both LP and filter-bank approaches is considered, which is capable of improving recognition results for both noisy and clean speech in CDHMM digit recognition. Secondly, better performance may also be achieved by replacing the cepstral coefficients by a recently proposed set of parameters located in the frequency domain which come from a simple filtering of the log band energies.
CitacióHernando, J., Nadeu, C. Robust speech parameters located in the frequency domain. A: European Conference on Speech Communication and Technology. "EUROSPEECH'97: 5th European Conference on Speech Communication and Technology: Rhodes, Greece: 22-25 September 1997". Rhodes: 1997, p. 417-420.