Title :
A speech recorder and synthesizer using ADPCM
Author :
Love, C. ; Ferens, K. ; Kinsner, W.
Author_Institution :
Dept. of Electr. Eng., Manitoba Univ., Winnipeg, Man., Canada
Abstract :
A speech recorder and synthesizer based on adaptive differential pulse code modulation (ADPCM) is presented. The system is designed and implemented as a stand-alone unit. The unit is intended as a speech cuing subsystem to assist speech shaping for disabled individuals. Calculations show that ADPCM has a constant signal-to-noise-ratio advantage over PCM for bit rates from 20 to 50 kb/s. The ADPCM system can produce a toll-quality speech at 32 kb/s with 4-bit ADPCM samples
Keywords :
audio recording; handicapped aids; pulse-code modulation; speech synthesis; adaptive differential pulse code modulation; bit rate; disabled individuals; signal-to-noise-ratio; speech cuing subsystem; speech recorder; speech synthesizer; stand-alone unit; toll-quality speech; Bit rate; Microphones; Phase change materials; Pulse modulation; Quantization; Signal processing; Speech coding; Speech processing; Speech synthesis; Synthesizers;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95918
