Frequency-warping in speech
| Autor: | Srinivasan Umesh, Douglas A. Nelson, N. Marinovic, Leon Cohen |
|---|---|
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | ICSLP Scopus-Elsevier |
| DOI: | 10.1109/icslp.1996.607142 |
| Popis: | We present results that indicate that the formant frequencies between different speakers scale differently at different frequencies. Based on our experiments on speech data, we then numerically compute a universal frequency-warping function, to make the scale-factor independent of frequency in the warped domain. The proposed warping function is found to be similar to the mel-scale, which has previously been derived from purely psycho-acoustic experiments. The motivation for the present experiments stems from our proposed use of scale-transform based cepstral coefficients (Umesh et al., 1996) as acoustic features, since they provide superior separability of vowels than mel-cepstral coefficients. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|