1980-03-31
1982-08-24
Nusbaum, Mark E.
G10L 100
Patent
active
043462626
ABSTRACT:
In a formant speech analysis synthesis system, formant extraction to control a recursive digital all-pole filter encounters the problem that pole-pairs are not orderly arranged and that real poles may occur which are not representative of formants. The problem is solved by transforming the coefficients of the second-order sections of the filter to coefficients which can be easily ordered and by means of which it is simple to assign formants to the real poles.
REFERENCES:
patent: 4220819 (1980-09-01), Atal
J. Flanagan, "Speech Analysis, Synthesis and Perception", Second Ed., Springer-Verlag, 1972, (In Particular pp. 224, 225, and 364).
B. Gold et al., "Analysis of Digital and Analog Formant Synth.", IEEE Trans. Audio and El., Mar. 1968, pp. 81-94.
Vogten Leonardus L. M.
Willems Leonardus F.
Briody Thomas A.
Goodman Edward W.
Kemeny E. S.
N.V. Philips Gloeilampenfabrieken
Nusbaum Mark E.
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