Sound synthesizer

Details Sound synthesizer Sound synthesizer

1980-09-19

1983-07-12

Kemeny, Emanuel S.

Boots, shoes, and leggings

179 1SM, 364724, G10L 100

Patent

active

043932720

ABSTRACT:
The spectral envelope of speech signals are characterized by LSP (line spectral pair) parameters, termed w.sub.i and .theta..sub.i. In a speech synthesizer the control parameters for the filter may be a.sub.i =-2 cos w.sub.i and b.sub.i =-2 cos .theta..sub.i. The synthesizer filter is essentially an all pole filter consisting of two feedback paths each of which has a transfer function having zeroes on a unit circle in the complex plane.

REFERENCES:
patent: 4064363 (1977-12-01), Malm
patent: 4125898 (1978-11-01), De Hart et al.
Cappolini, "Design of Some Digital Filters", Symposium, Polytechnic Institute of Brooklyn, Apr. 1969, pp. 313 and 320.
Flanagan, "Speech Analysis, Synthesis and Perception", Springer-Verlag, 1972.
R. Shafer et al., "Digital Representations of Signals", Proc. IEEE, Apr., 1975, pp. 662, 663.
L. Rabiner et al., "FIR Digital Filter etc.", Proc. IEEE, Apr., 1975, pp. 595, 600.
S. Freeny, "Special Purpose Hardware for Digital Filtering", Proc. IEEE, Apr., 1975, pp. 633, 634.

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