[ardour-dev] The new pan paradigm
paul at linuxaudiosystems.com
Mon Aug 23 18:46:21 PDT 2004
>Panning is really a pretty "artificial" concept. In the real world, a sound
>source exists in a stereo sound stage, and we "locate it" (the eyes do this
>much better than the ears) by virtue of the amplitude AND phase at each ear.
>Reading Phillip Newell's monitoring book really drove this home. When you
>turn a pan pot, your are ONLY locating the amplitude.
>When I have a mono guitar channel, and add a TAP Reverberator (2 in, 2 out), I
>get a pan control for each side of the stereo. This makes no sense! You
>completely step on the phase information by manipulating the stereo field
possibly correct. i'd be pretty interested to know if PT's panning
system tries to compensate for this. the manual says absolutely
nothing about it, and i suspect not.
> To more closely model a real acoustic space, the system should have
>a single L-R pan of the input to the reverb, and the reverb CREATES the
this is easily achievable in ardour, but it can't be done inline in a
single mixer strip, just like it can't be done on a single strip on
that 1/2M$ Neve console either.
leave the track with 1 in, 2 outs. you will have a single panner. send
the outputs to a bus with the reverb plugin preset as in insert, or an
independent JACK client running the reverb, or an external h/w
>board, the guitar would be placed on the sound stage using the pan pot
>(amplitude only), and the stereo output of the reverb (derived from the
>usually mono reverb send) would be summed to the output bus. I don't see how
"send" is the key here. you were using the reverb as an insert, you
need to use it as with a "send" topology.
>the new Ardour panning paradigm relates to either one of these. Does it have
>some advantages I'm missing? I don't remember much discussion, just Paul's
>"the panning code was hosed, so I gutted it and rebuilt it from scratch".
the panning code rebuild was because real engineers want to position
audio within the stereo field, and that includes a width component as
well as a position. having a single panner for a stereo track
(2in,2out) makes that impossible - you cannot control the width.
More information about the Ardour-Dev