2008 IEEE International Conference on Acoustics, Speech and Signal Processing 2008
DOI: 10.1109/icassp.2008.4518580
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Doppler-variant modeling of the vocal tract

Abstract: A common technique to deploy linear prediction to nonstationary signals is time segmentation and local analysis. Variations of a process within such a segment cause inaccuracies. In this paper, we model the temporal changes of linear prediction coefficients (LPCs) as a Fourier series. We obtain a compact description of the vocal tract model limited by the predictor order and the maximum Doppler frequency. Filter stability is guaranteed by all-pass filtering, deploying the human ear's insensitivity to absolute … Show more

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“…Moreover, closer inspection of (2) shows that pow S is the inverse value of the known value called "prediction gain." This value is widely used in linear predictive coding (LPC) [13]. Thus, it is possible to calculate stochasticity without using ALP, but by using, for example, Levinson-Durbin recursion, evaluating the prediction gain and then calculating:…”
Section: Basic Approachmentioning
confidence: 99%
“…Moreover, closer inspection of (2) shows that pow S is the inverse value of the known value called "prediction gain." This value is widely used in linear predictive coding (LPC) [13]. Thus, it is possible to calculate stochasticity without using ALP, but by using, for example, Levinson-Durbin recursion, evaluating the prediction gain and then calculating:…”
Section: Basic Approachmentioning
confidence: 99%