qp_kaiser function

Kaiser FIR filter design

Compute FIR filter for use with a quasi-perfect reconstruction polyphase-network filter bank.

qp_kaiser(nb, at, linear = FALSE)

Arguments

• nb: number of frequency bands, specified as a scalar
• at: attenuation (in dB) in the stop band.
• linear: logical, indicating linear scaling. If FALSE (default), the Kaiser window is multiplied by the ideal impulse response c("$h(n) = a\n$", "$sinc(an)$") and converted to its minimum-phase version by means of a Hilbert transform.

Returns

The FIR filter coefficients, of class Ma.

Examples

freqz(qp_kaiser(1, 20))
freqz(qp_kaiser(1, 40))

See Also

Ma, filter, fftfilt, fir2

Author(s)

André Carezia, andre@carezia.eng.br .

Conversion to R by Geert van Boxtel, G.J.M.vanBoxtel@gmail.com .