Patent
1993-04-26
1996-12-10
MacDonald, Allen R.
395 234, 395 235, 395 28, G10L 900
Patent
active
055839690
ABSTRACT:
An apparatus for processing a speech signal includes a coefficient calculating circuit for receiving an input signal, and for generating a first value for suppressing a change of level of the input signal; a first delay circuit for receiving the input signal, and for delaying the input signal by a predetermined time; a feature extracting circuit for receiving the input signal, and for deriving a feature value representing a feature of consonants from the input signal; a coefficient control circuit for receiving the first value from the coefficient calculating circuit and the feature value from the feature extracting circuit, and for changing the amplitude and the duration of the first value depending on the feature value, so as to generate a second value; a multiplying circuit for receiving the delayed input signal from the first delay circuit and the second value from the coefficient control circuit, and for multiplying the delayed input signal by the second value.
REFERENCES:
patent: 3679830 (1972-07-01), Uffelman et al.
patent: 4001505 (1977-01-01), Araseki et al.
patent: 4181813 (1980-01-01), Marley
patent: 4589136 (1986-05-01), Poldy et al.
patent: 4769844 (1988-09-01), Fujimoto et al.
patent: 4780906 (1988-10-01), Rajasekaran et al.
patent: 4817155 (1989-03-01), Briar et al.
patent: 4937869 (1990-06-01), Iwahashi et al.
patent: 5146504 (1992-09-01), Pinckley
patent: 5159638 (1992-10-01), Naito et al.
patent: 5278910 (1994-01-01), Suzuki et al.
patent: 5408581 (1995-04-01), Sukuki et al.
Parsons, Voice and Speech Processing, McGraw-Hill, New York, NY (1987), pp. 119-121.
R. W. Guelke, Journal of Rehabilitation Research and Development, vol. 24, No. 4, pp. 217-220, Fall 1987, "Consonant Burst Enhancement: A Possible Means To Improve Intelligibility For The Hard of Hearing".
Mekata Tsuyoshi
Suzuki Ryoji
Yamada Yoshinori
Yoshizumi Yoshiyuki
MacDonald Allen R.
Sartori Michael A.
Technology Research Association of Medical and Welfare Apparatus
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