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Re: Plotting the frequency response of a filter in "real" Hz
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From: |
Maynard Wright |
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Subject: |
Re: Plotting the frequency response of a filter in "real" Hz |
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Date: |
Thu, 21 Apr 2016 18:54:28 -0700 |
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User-agent: |
KMail/4.13.3 (Linux/3.16.0-30-generic; KDE/4.13.3; i686; ; ) |
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> @ Maynard Wright
>
> That just makes the x axis be between 0 and 0,5. Not what I'm looking
> for. I'm looking for Hz in the audio range.
>
Let's say that the vector w contains values between 1885 radians per second
and 20735 radians per second, a good telecommunications audio range. Then
the values in the vector fHz will range from about 300 to 3300 Hz. Because
fHz was created by dividing the elements in w by a constant (2 * pi), fHz will
contain the same number of elements as does w, but when you plot using fHz,
the x axis will be in Hz rather than in radians per second.
Maynard Wright