> How would you proceed?
I would go to the source and follow the
trail:https://sourceforge.net/p/sox/code/ci/master/tree/src/biquads.c#l412
Shotcut has a Bass/Treble filter that uses Ladspa. You could download Shotcut,
use the filter, and inspect the .mlt file to see how it works.
Patches to improve the MLT documentation are always welcome.
Cheers,
~Brian
On Monday, August 16, 2021, 08:38:20 AM CDT, Spielmops
<[email protected]> wrote:
I want to use an audio-filter with Kdenlive. So I put the treble-filter onto
my audio and see the effects parameter. No clue, what these parameters want. A
frequency-parameter "a.frequency" with a range up to 1 Mio.? And another one
"a.f" with the same range? I try to gather information.
I call
https://www.mltframework.org/plugins/PluginsFilters/
I find the filter "sox.treble", click on it and get:
https://www.mltframework.org/plugins/FilterSox-treble/
At the bottom there is the line, I#m looking for: the parameters. I click onto
this lik and get:
- 404 File not found
Where to look now? It's a SoX-filter, so I look for SoX:
http://sox.sourceforge.net/sox.html
Now, that should it be. I look for treble and get a description but no
parameters. But a line that gives me hope:
- The filters are described in detail in [1].
Ok, I goto [1] and read:
- [1] R. Bristow-Johnson, Cookbook formulae for audio EQ biquad filter
coefficients, http://musicdsp.org/files/Audio-EQ-Cookbook.txt
So, now the last step, I call
http://musicdsp.org/files/Audio-EQ-Cookbook.txt
And get:
SORRY /
\ /
\ This page does /
] not exist yet.
How would you proceed?
Spielmops
--
"Ich habe keine besondere Begabung, sondern bin nur leidenschaftlich
neugierig." (Einstein) spielmops.org
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