Title :
Combined harmonic and waveform coding of speech at low bit rates
Author :
Shlomot, Eyal ; Cuperman, Vladimir ; Gersho, Allen
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
In this paper we present a new approach for speech coding, which combines frequency-domain harmonic coding for periodic and “noise like” unvoiced segments of speech with a time-domain waveform coder for transition signals. This hybrid coder requires special handling of the boundary between voiced and transition segments. We outline the details of a 4 kbps hybrid coder and present subjective quality test results of this coder
Keywords :
frequency-domain analysis; harmonics; speech coding; time-domain analysis; waveform analysis; 4 kbit/s; frequency-domain harmonic coding; hybrid coder; low bit rate coding; noise like unvoiced segments; periodic unvoiced segments; speech coding; subjective quality test results; time-domain waveform coder; transition segments; transition signals; voiced segments; waveform coding; Bit rate; Decoding; Frequency synchronization; Quantization; Speech analysis; Speech coding; Speech enhancement; Tail; Testing; Time domain analysis;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.675332
