5th European Conference on Speech Communication and Technology

Rhodes, Greece
September 22-25, 1997

Speech Analysis and Synthesis Using an AM-FM Modulation Model

Alexandros Potamianos (1), Petros Maragos (2)

(1) AT&T Labs-Research, Florham Park, NJ, USA
(2) Institute for Language & Speech Processing, Athens, Greece; and School of E.C.E, Georgia Institute of Technology, Atlanta, GA, USA

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.

Full Paper

Bibliographic reference.  Potamianos, Alexandros / Maragos, Petros (1997): "Speech analysis and synthesis using an AM-FM modulation model", In EUROSPEECH-1997, 1355-1358.