Subject: RE: [linux-audio-dev] LADSPA unbounded control values
From: brian.stafford_AT_ukonline.co.uk
Date: Wed Nov 22 2000 - 16:05:32 EET
On Tue, 21 Nov 2000 20:40:58 -0500, Paul Barton-Davis <pbd_AT_Op.Net> wrote:
> in the CMT plugin set, there is at least 1 plugin with a control port
>
> without an upper bound (mono amplifier). the port is also hinted as
> being suitable for logarithmic control. i am probably just being
> dense, but it seems very difficult to pick an arbitrary upper bound
> *and* use a logarithmic transform and still get meaningful results.
>
> any thoughts ?
>
> --p
Seems to me that the term "logarithmic" isn't quite right. If one thinks
in dB as all engineers should, it's immediately obvious that a 0dB
reference point must be specified. So my take is that its not the lack
of an upper bound that's the problem, it's the lack of a 0db reference.
This applies even if the bounds are set - where is 0dB on the scale? My
best guess is default to 1.0 and hope for the best.
Brian Stafford
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