Subject: Re: [linux-audio-dev] Re: [ann] unmatched - a LADSPA amp tone
From: Tim Goetze (tim_AT_quitte.de)
Date: Tue Oct 29 2002 - 15:03:06 EET
Stuart Allie wrote:
>be done at a much higher sample rate at which the alias distortion is less
>of a problem, then digitally low-pass filtered to less than half of the
>system sample rate, and finally resampled."
unfortunately, oversampling takes quite a lot of cpu cycles.
according to steve's recent post, he expects the current
valve_1209.so plugin's cpu usage to rise linearly, 4x over =
4x cpu. luckily, the valve itself doesn't alias so much we'd
have to go there for now.
>Overdriving a tube stage too much gives you harsher clipping, not the
>singing, sweet distortion we want. To really get sweet, crunchy distortion,
>keep each stage that goes into distortion no more than 6-9db into
>distortion.
yes, stacking the valve plugins works fairly well. nice to
see that traditional tube techniques find their counterpart
in our efforts, it means we're not doing something completely
unrelated. ;)
>All fuel for thought I hope.
yup. thanks!
tim
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