Incoming PC note to change session tempo (BPM, MIDI clock)

Hi,
Nic is of course the master of this, but I don't think you can make StreamByter send messages periodically, which you'd need for that AUM tap tempo. Basically, SB receives one message and sends one or more messages in response. It cannot loop and wait to send messages at different times. Now, you might be able to do it with the delay (+Dnnnn) parameter in the Send command. You could send several taps, suitably delayed, which might work. However, the delay time is not a variable, so you'd need to precompute the appropriate delays for each tempo, and hardcode a Sub for each tempo. This might work, but is pretty inflexible.

I think you'd be better off using Audiobus, which lets you MIDI map the tempo setting, and using Link to connect that to AUM. So, you could send the PC message to Audiobus, use SB to convert it to tempo, probably a table lookup, send that as CC to the Audiobus internal controls. Map that CC to adjust the Audiobus tempo. Enable Link in AB and AUM. I've checked the Audiobus CC scaling for Tempo, and it's a little odd. The range is 20..300 BPM, corresponding to a CC value range of 0..127. However, you could adjust the limits to make it work more rationally. I could try this out, if you're interested.

Cheers

Edit: I just made a quick test, setting Audiobus tempo from an LK controller, Link enabled, tempo is instantly reflected in AUM. So, we'd just replace LK with StreamByter and we're there. To me, this seems much easier than messing with tapping a tempo.

Late edit: I want correct an error I introduced above. SB can run periodically, with no external input. The trick is to Send a delayed message to itself, using the +I (Inject) and +Dnnn (delay by nnn ms) flags. Thus, SB still runs only once in response to each message, but that message can be a delayed one from itself. And it can send a new message each time, so it becomes a perpetual motion.

Great! That's good to hear. I was just about to offer another weird way to generate tap tempo, but we can forget about that, OBE.
Cheers.

You can just count clocks in SB, and emit a message every 24 clocks. But I think setting the tempo in AUM, when there are already clock messages flowing around could be very messy. Certainly, the clocks would not be synced.

Edit: Here's the basic code. You could change the Send to any desired message.
#DivideClock
# sends a message every 24 clocks
If load
 Ass J0 = 0
End
If M0 == F8 # MIDI Clock message
 Mat J0 = J0 + 1
 If J0 >= $24
   Ass J0 = 0
   Send B0 $10 $127 # send any desired message
 End
 Block # clocks do not exit this script
End