September 22-25, 1997
In this paper, the AM-FM modulation model is applied to speech analysis, synthesis and coding. The multiband demodulation pitch tracking algorithm is proposed that produces smooth and accurate fundamental frequency contours. The AM-FM modulation vocoder represents speech as the sum of resonance signals modeled by their amplitude envelope and instantaneous frequency signals. Eficient modeling and coding (at 4.8-9.6 kbits/sec) algorithms are proposed for the amplitude envelope and instantaneous frequency signals. Amplitude and frequency modulations of the speech resonances are shown to be perceptually important for natural speech synthesis.
Bibliographic reference. Potamianos, Alexandros / Maragos, Petros (1997): "Speech analysis and synthesis using an AM-FM modulation model", In EUROSPEECH-1997, 1355-1358.