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1
Speech Compression and Synthesis
In: DTIC AND NTIS (1978)
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2
Speech Compression and Evaluation
In: DTIC AND NTIS (1978)
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3
Speech-quality testing of some variable-frame-rate (VFR) linear-predictive (LPC) vocoders
In: Acoustical Society of America. The journal of the Acoustical Society of America. - Melville, NY : AIP 62 (1977) 2, 430-434
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4
Natural Communication with Computers. Volume 2. Speech Compression Research at BBN
In: DTIC AND NTIS (1974)
Abstract: This report describes work in developing a linear predictive speech compression system that transmits high quality speech at low bit rates. The authors have developed several methods for reducing the redundancy in the speech signal without sacrificing speech quality. Included among these methods are preemphasis of the incoming speech signal, adaptive optimal selection of predictor order, optimal selection and quantization of transmission parameters, variable frame rate transmission, optimal encoding, and improved synthesis methodology. When all of these were incorporated a floating point simulation of a pitch-excited linear predictive vocoder, synthesized speech with high quality at average transmission rates as 1500 bps was obtained. ; See also Volume 1, ADA003315 and Volume 3, ADA003479.
Keyword: *SPEECH COMPRESSION; *VOICE COMMUNICATIONS; ARPA COMPUTER NETWORK; CODING; COMPUTER APPLICATIONS; COMPUTER NETWORKS; Cybernetics; FLOATING POINT OPERATION; NATURAL LANGUAGE; QUANTIZATION; SENSITIVITY ANALYSIS; SIGNAL PROCESSING; SPEECH RECOGNITION; SPEECH TRANSMISSION; STATISTICAL ANALYSIS; SYNTHESIS; VOCODERS; Voice Communications
URL: http://www.dtic.mil/docs/citations/ADA003478
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA003478
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