Re: ToneShiftEQ 0.7.0 Released

Hermann Meyer <brummer--S0/[email protected]> Sat, 1 Aug 2026 18:34:57 +0200
Newsgroups	gmane.linux.audio.users
Message-ID	<[email protected]>
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Am 01.08.26 um 14:26 schrieb Fons Adriaensen:
>> Show accurate Filter-curves in Biquad mode
> Except they are not, also not in SV mode.
>
> Try this two parametrics (in SV or BQ mode):
>
>   500 Hz, -30 dB, Q =3D 10
> 1000 Hz, -30 dB, Q =3D 10
>
> The measured response shows -4.5 dB halfway between
> the two dips (at 710 Hz). Toneshift shows something
> close to -14 dB (difficult to read exactly). Also
> the individual responses of the two filters are wrong.
>
> Errors are smaller for less extreme settings, but that's
> no excuse.
>
Okay, I found the culprit in my code. I've wrongly leaved a smooth for=20
the Q values in the GUI, thanks for your testing. Fixed now in the=20
repository.

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    <div class=3D"moz-cite-prefix">Am 01.08.26 um 14:26 schrieb Fons
      Adriaensen:<span style=3D"white-space: pre-wrap">
</span></div>
    <blockquote type=3D"cite"
      cite=3D"mid:am3l5WhptoSpKvaO-i9wRM+HIrmlcsMIzqIq2i0B+6BGkLq7r@public.gmane.org">
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      <blockquote type=3D"cite">
        <pre wrap=3D"" class=3D"moz-quote-pre">Show accurate Filter-curves=
 in Biquad mode
</pre>
      </blockquote>
      <pre wrap=3D"" class=3D"moz-quote-pre">
Except they are not, also not in SV mode.

Try this two parametrics (in SV or BQ mode):

 500 Hz, -30 dB, Q =3D 10
1000 Hz, -30 dB, Q =3D 10

The measured response shows -4.5 dB halfway between
the two dips (at 710 Hz). Toneshift shows something
close to -14 dB (difficult to read exactly). Also
the individual responses of the two filters are wrong.

Errors are smaller for less extreme settings, but that's
no excuse.=20

</pre>
    </blockquote>
    Okay, I found the culprit in my code. I've wrongly leaved a smooth
    for the Q values in the GUI, thanks for your testing. Fixed now in
    the repository. <br>
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