DJRND2

[PERILLE <perille@club-internet.fr>]

american qabalah wrote :

> > But a permanent cyclic loop straightly defined in terms of tempo and
> > bars set you free from any need of external sync, and rec start can
> > appear wherever around the wheel, the loop being perfectly made once a
> > whole revolution made. The method works in terms of Omega/phi (Omega =
> > pulsation = tempo) and (Phi = phase = differential bar 
>synchronization),
> > Omega commun to every loop, Phi given for each loop. It is a BPM
> > gearwheels recording machine. No start/end points. Free running in your
> > own beat where you can record at any time during your playback. An
> > eternal and fiendish grooving method which allows BPM changes.
> 
> I think I get the eternal gearwheel groove machine part and it sounds 
>groovy,
> but how does it allow BPM changes?  Where does BPM come in?  Isn't the
> circumference of your metaphoric eternal groove gearwheel just the 
>duration of
> the repeating loop?  Do you have to put in the BPM and then the number of
> beats you wish to loop?
> 


BPM is the pitch in the DJRND2. Loop circumferences are given in terms
of bars.

You can tap at each measure on the TAP TEMPO, so you can even enter a
5-time measure for instance. It works well unless your measure tapping
is too long (time out then displayed)
BPM is automaticaly scaled in a ratio of 2. (if you tap at 170 BPM, it
will go down to 85 BPM and loops are twice longer. Never mind the loops
durations, they are automaticaly computed from the commun BPM with each
loop measure number)

BPM changes concern the pitch, but DJRND2 always thinks in terms of BPM.
Possible BPM variations around +/- 20%

> And why a gearwheel?  A gearwheel can work with other gearwheels of 
>different
> radii.  Are you saying that your gizmo can playback loops of different
> durations?

Yes. 14 stereo loops :

- 2 2-bar loops
- 8 8-bar loops
- 3 16-bar loops
- 1 4-bar loop

You can also wheelslide a loop in comparison with the others in term of
bar portion to fine kick-to-kick coincidence, or to simulate beat break
effects.
Wheelsliding (Forw/back keys) can also operate on the whole gearwheels
to keep it sync with the source in real time.


> So that with a 3 second loop and a 7 second loop, they would both
> begin at the same time every 21 seconds?  That sounds pretty freaky 
>deaky.
> 

No. Only with the given number of bars. And always in terms of bars,
never in terms of seconds.

> Also if you change the BPM this would alter the circumference of your
> gearwheel?

No. Only the pitch of the whole gearwheels.

> If, say, you add to the circumference of your gearwheel, increasing
> the loop duration from 5 to 7 seconds, does the extra 2 seconds show up 
>as
> silence or do you time/pitch-stretch the loop to wrap around the new, 
>bigger
> gearwheel?
> Conversely if you decrease the loop duration does that eat up part
> of the existing loop?  Or does all the existing sound get erased and you 
>start
> over again?
> 

No. Circumferences never change. They are all scarved on the front panel
for each loop. Only BPM and wheelsliding operate. And you have a 14-key
keyboard to mute loops during their revolutions. BPM changes can also
act in terms of bar sync by using what I call a loop signature.

Emmanuel