Method for determining the transmittance of a filter circuit ada

Details Method for determining the transmittance of a filter circuit ada Method for determining the transmittance of a filter circuit ada

1993-09-23

1996-04-23

Ramirez, Ellis B.

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364572, 333167, G06F 1700

Patent

active

055110142

ABSTRACT:
A method for determining the transmittance of a filter circuit adapted to transform the impulse response of a filter into a minimal phase response entails computing the theoretical frequency response of the filter circuit and the minimal phase frequency impulse response with a causality condition applied to the cepstrum of the minimal phase response, determining the theoretical transmittance as the inverse fast Fourier transform of the theoretical frequency response, estimating the transmittance of the filter circuit by truncation of the theoretical transmittance of which only a predetermined number of coefficients are retained and determining the minimal phase global response from a limited expansion of the cepstrum.

REFERENCES:
patent: 4310721 (1982-01-01), Manley et al.
G. R. Reddy, "Design of Minimum-Phase FIR Digital Filter through Cepstrum", Electronics Letters, vol. 22, No. 23, Nov. 6, 1986, pp. 1225-1227.
S. Imai, "Digital Filter Design in the Quefrency Domain", IEEE Transactions on Acoustics, Speech and Signal Processing, vol. 26, No. 3, Jun. 1978 pp. 226-235.

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