Have a feature request or suggestion? Post your idea here!

Post

2 Follower Folgen
0
Avatar

XDJ-RX : Quantized Beat Jump

Hi there Pulse of Pioneer,

in another thread with the same topic you replied that beat jumping is not possible within the XDJ-RX because of "available memory and processing limitations". And then somebody closed the thread so we can't discuss and post any longer.

 

Sorry to reopen this topic again but I'm an academic engineer in Electronics, too.

It's quite simple, it's about basics:
- We know the BPM of the song due to meticulously preparation (RekordBox analysis).
- We know the elapsed time in milliseconds of the track/deck playing
- We can assume that it's 4/4 for 99.9% of "our" music

 

And it's about reusing available "ready to use functions":
- The RX recognizes the SHIFT button actions
- Each deck features 2 search/track search buttons
- The RX is capable to call cue points and jump to it programmatically (auto cue) or by pressing buttons (hot cue, cue/loop call)

What to do?
If we want to jump 4 bars/16 beats backwards or forwards and we know the BPM of the track, then we have to jump in seconds: delta t=(bars*240)/BPM

e.g.
track-speed: 126 BPM
beat jump: 4 bars backwards
current playing: at 2min 22sec

So it's simple as that:
dt=4*240/126=7,619sec

that's 7.619ms in the time-line, we have to set and call a new jump point to 2min 14.381 sec if we want to beat jump 4 bars to the left by pressing SHIFT and SEARCH LEFT. Basically that's the same then pressing the available SEARCH button but this time using a different step for the jump, a well calculated time, that's all about the magic.

I'm honestly sorry to bring it into question but ... you engineers of Pioneer tell us that this jump is not possible due to memory and hardware limitations of the XDJ-RX? The processor of this device has no build-in arithmetic methods like division or subtraction?

 

Again: is it really because of the beauty of modern engineering, or is it because of 101-marketing/lifecycle issues of your mid-range product strategies? ;-)

Volker Pliem Beantwortet

Offizieller Kommentar

Avatar

1) There are no dedicated buttons for this function.

2) The engineers have told me it's not possible on the hardware.

3) I'm sure other reasons exist, be they marketing or otherwise, for not introducing this function to this particular hardware.

Pulse
Aktionen für Kommentare Permalink

Post ist für Kommentare geschlossen.

1 Kommentar