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    • BOLT BERANEK AND NEWMAN INC CAMBRIDGE MA (4)
    • Makhoul, John (4)
    • Roukos, Salim (4)
    • Schwartz, Richard (4)
    • Sorensen, John (2)
    • Krasner, Michael (1)
    • Krasner, Micheal (1)
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    • 1981 (4)
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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 4 of 4 1 Research on Narrowband Communications Makhoul, John; Roukos, Salim; Schwartz, Richard In: DTIC AND NTIS (1981) BASE Show details 2 Research on Narrowband Communications Makhoul, John; Roukos, Salim; Schwartz, Richard In: DTIC AND NTIS (1981) Abstract: We report on research toward a very-low-rate vocoder. This quarter we continued investigation in two areas: the phonetic vocoder and an unsupervised method for vocoding. We introduced phoneme pair probabilities to improve the accuracy of phonetic recognition. We investigated the use of the phonetic vocoder as a tool for semi-automatic labeling of speech. We also experimented with several variations of the phonetic vocoder to improve the intelligibility of the vocoded speech with a moderate increase of the bit rate. Our work in the second area concentrated on developing a novel method of spectral quantization: We quantize a sequence of spectra simultaneously. We are also evaluating a new distance metric that does not require the dynamic programming time warping. Keyword: *SPEECH COMPRESSION; *VOCODERS; *VOICE COMMUNICATIONS; ACCURACY; CLUSTERING; DATA BASES; DIPHONES; DYNAMIC PROGRAMMING; NARROWBAND; NARROWBAND COMMUNICATIONS; PARAMETERS; PHONEME RECOGNITION; PHONETICS; SPECTRAL TEMPLATES; SPEECH ARTICULATION; SYNTHESIS; UNSUPERVISED LEARNING; VFR(VARIABLE FRAME RATES); Voice Communications URL: http://www.dtic.mil/docs/citations/ADA104296 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA104296 BASE Hide details 3 Research on Narrowband Communications Makhoul, John; Krasner, Michael; Roukos, Salim... In: DTIC AND NTIS (1981) BASE Show details 4 Research on Narrowband Communications Makhoul, John; Roukos, Salim; Krasner, Micheal... In: DTIC AND NTIS (1981) BASE Show details

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