Ok, we'll leave the angles out. Say your speaker
set up for a ring is:

1. mid front right
2. front right
3. front left
4. mid front left
5. mid back left
6. back left
7. back right
8. mid back right

Then you can plugin bformat outs 1-8 straight into 1-8.

If you are working pair-wise L-R from the front, then
your pairs will be bformat outputs (3,2) (4,1) (5,8) and
(6,7).

I hope this clears it up.

Victor






>
> I am very confused, and it may well be at least partly on
> the conceptual level.
>
> I'm trying to understand the bformdec documentation. It
> describes speaker placement, for quad, as starting at
> right front and running clockwise to left front. It also
> references degrees (on a unit circle), with straight ahead
> being zero degrees and degrees moving clockwise through
> 360. I think I understand this so far. (No reference is
> made to angles; since I am math-challenged, I would like
> to leave them out of the discussion.)
>
> If one is dealing with quad output from bformdec:
> a1, a2, a3, a4 bformdec
>
> the output options seem to be:
> 1) outq a1, a2, a3, a4
> requiring verbal explanation of what this actually means
> in terms of speaker placement (as in "channel 1 is RF,
> channel 2 is RR" etc.; or
>
> 2) outq a4, a3, a1, a2
> reinterpreting bformdec's output in terms of normal quad
> speaker/channel terminology - which (if I understand
> correctly) is LF = 1, LR = 2, RF = 3, RR = 4.
>
> I've less idea what such a reinterpretation might be for
> 8-channel circular mode. I've made the assumption (which
> certainly needs explanation to the "user") that the
> (normal?) counting of channels procedes in stereo pairs
> from front to rear. Assuming this, the output line would
> read: 2) outo a8, a1, a7, a2, a6, a3, a5, a4
>
> I'd much appreciate being shown the error of my
> assumptions and thinking. There's either something wrong
> with my thinking, or with bformdoc, because - as I
> mentioned before - I'm not getting expected results with
> either quad or 8-channel bformdec. Using my test file,
> there is no speaker arrangement in which get a clear
> circular movement through 360 degrees. The placement is
> simply wrong, particularly in the range from 90 - 270
> degrees. (I'm depending principally on strong aural and
> visual LED evidence in a quad setting.)
>
> Victor is happy; I'm not.
>
> And I'd still like to try out john ff's proposed bformdec,
> if there's any way to do so.
>
> Art Hunkins
>
> ----- Original Message -----
> From: "Victor Lazzarini" 
> To: "Developer discussions"
>  Sent: Thursday, July
> 12, 2007 10:10 AM Subject: [Cs-dev] bformdec 8-ring
>
>
> > Dear all,
> >
> > I just ran the bformdec using the 8-ring setup in the
> > studio and as I said before here it works as expected.
> > The speaker positions are as follows:
> >
> > bformdec out                    speaker pos (degrees)
> > 1                               22.5
> > 2                       67.5
> > 3                       112.5
> > 4                       157.5
> > 5                       202.5
> > 6                       247.5
> > 7                       292.5
> > 8                       337.5
> >
> > Angles are measured counterclockwise from the right,
> > so right -> 0, front ->90,  left ->180 and back 270.
> >
> > Victor
> > Victor Lazzarini
> > Music Technology Laboratory
> > Music Department
> > National University of Ireland, Maynooth
> >
> >
> >
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