. . . "6"^^ . . "3"^^ . "Wilmington" . "[864A1814C2B7]" . "RIV/68407700:21260/13:00213167" . . "2308-4413" . . "ICN 2013: The Twelfth International Conference on Networks" . "Zahradn\u00EDk, Pavel" . . . "FIR filter; narrow-band filter; dual-tone multifrequency; iso-extremal approximation"@en . "Vl\u010Dek, Miroslav" . "Optimal FIR Filters for DTMF Applications"@en . . "94297" . "A fast and robust analytical procedure for the design of high performance digital optimal band-pass finite impulse response filters for dual-tone multi-frequency applications is introduced. The filters exhibit equiripple behavior of the frequency response. The approximating function is based on Zolotarev polynomials. The presented closed form solution provides formulas for the filter degree and for the impulse response coefficients. Several examples are presented." . . "P(FR-TI2/621)" . . . . "Optimal FIR Filters for DTMF Applications"@en . "Optimal FIR Filters for DTMF Applications" . . "A fast and robust analytical procedure for the design of high performance digital optimal band-pass finite impulse response filters for dual-tone multi-frequency applications is introduced. The filters exhibit equiripple behavior of the frequency response. The approximating function is based on Zolotarev polynomials. The presented closed form solution provides formulas for the filter degree and for the impulse response coefficients. Several examples are presented."@en . "IARIA" . . "978-1-61208-245-5" . . "\u0160im\u00E1k, Boris" . "2013-01-27+01:00"^^ . "Sevilla" . "Optimal FIR Filters for DTMF Applications" . . "RIV/68407700:21260/13:00213167!RIV14-MPO-21260___" . "21260" . "1"^^ . .