Subject: Re: [linux-audio-dev] [ann] unmatched - a LADSPA amp tone
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Tue Oct 29 2002 - 10:18:31 EET
On Tue, Oct 29, 2002 at 12:18:23 +0100, Frank van de Pol wrote:
> looking at the distorted signal it look to me like an amp that is clipping,
> but it's power supply can't maintain the voltage (eg. relatively high
> impendance on the powersupply/series resistance). While +ve or -ve side of
> the output pair is used it drains the capacitor from the power supply, hence
> the exponential slope from 'spike' till drop.
Aha, great. I was thinking about how to rewrite the valve rectifier, and
it occured to me that my revised algorithm would output something that
looked like that in extreme cases.
That means 1) we're nearer to Tim's shape, and 2) my alg. is more or less
correct 3) we may not need to mess about with chebies.
- Steve
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