[Numpy-discussion] Q: Use of scipy.signal.bilinear
rays at blue-cove.com
Tue Dec 8 13:12:03 EST 2015
Sorry - I'll join there.
At 10:00 AM 12/8/2015, you wrote:
>On Tue, Dec 8, 2015 at 9:30 AM, R Schumacher
><<mailto:rays at blue-cove.com>rays at blue-cove.com> wrote:
>We have a function which describes a frequency
>response correction to piezo devices we use. To
>flatten the FFT, it is similar to:
>Cdis_t = .5
>N = 8192
>for n in range(8192):
>Â B3 = n * 2560 / N
>Â Fc(n) = 1 /
>((B3/((1/(Cdis_t*2*pi))**2+B3**2)**0.5)*(-0.01*log(B3) + 1.04145))
>In practice it really only matters for low frequencies.
>I suggested that we might be able to do a time
>domain correction as a forward-reverse FFT
>filter using the function, but another said it
>can also be applied in the time domain using a bilinear transform.
>So, can one use
>and, how does one generate b,a from the given
>Fourrier domain flattening function?
>This should go to either
><mailto:scipy-user at scipy.org>scipy-user at scipy.org
> or <mailto:scipy-dev at scipy.org>scipy-dev at scipy.org
>NumPy-Discussion mailing list
>NumPy-Discussion at scipy.org
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