Subject: Re: [OT][linux-audio-dev] Ardour : features page
From: Tom Pincince (stillone_AT_snowcrest.net)
Date: Tue Oct 17 2000 - 09:20:28 EEST
>- you press the pedal and set the start of the loop point
> at this point the app stores 0.5-1sec of audio in RAM (starting from
this
>point)
>
>- as soon as you press the pedal again, the end loop point is set,
> and the HDR app will IMMEDIATELY jump to the first loop point without
any
> clicks since it is cached in RAM and there is plenty time left to
stream the
> subsequent data.
I knew that you would see this technique, considering the way your
understanding of digital audio has EVOlved recently. I think someone is
working on such a thing as a plug in (tapiir?). The feature I am
looking for is much more complex, though it may involve this technique.
The idea is that recording begins with a foot pedal or an amplitude
threshold detector monitoring the audio path (this is important because
with a pedal the player must start the loop early (maybe a 1/16th note
before the 1 beat) so the leading transient will not be cut off, and
must then remember to end the loop early. Threshold detection allows
the leading transient to be the 1 beat automatically). The loop end
point is defined with a pedal. The app uses the loop start and end
points to define a region in an edl, assigns this region to a track and
immediately begins playback from the start of the region. The soundfile
is still open and being recorded to. When the loop reaches the end the
app creates another region representing the audio recorded since the
previous region had been defined, assigns this region to a new track,
and immediately begins playback of both tracks from the beginning (or
auto-mutes the second track as desired by the user). This process goes
on for as long as the player desires, producing a new region for each
iteration through the loop, until recording is stopped.
The difference between this and the fripp stuff is that while each
iteration through the loop is audibly layered, they are physically
separate. The fripp method permanently mixes each new iteration into
the composite recording. In performance both methods would produce
identical sonic output. The method I describe allows the performance to
be broken down into its individual parts for later use in the
arrangement of a composition. With loops of only a few seconds this
would quickly produce too many tracks to be mixed in rt, and for this I
would use a jamman. I am talking about a loop that is as long as the
song, where entire parts are added one iteration at a time.
Tom
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