Rewire

[ulrik]

Ulrik You will need to reverse the host slave relationship if you want Notion to control the tempo etc.

I know Reaper shows a "allow slave to set tempo" option, but I've never been able to make this work (even with Reaper as host and as slave). As tomr put it, you will need to use Notion as host to control the tempo from Notion.

This is something the folks over at Reaper will need to deal with.

I agree, if it's the Reaper people or the Notion people that has to do deal with it, I don't know.

You say you've never been able to make it work, is that in conjunction with Notion or with another daw? I have only tried this with Notion and I have also never got it to work.

As I explained before, what I want to do is to record live audio in sync with my Notion composition and that is impossible if Reaper act as slave, but maybe there is another way to do this, if anybody have any clue I would be very happy to try it.

[pcartwright]

Is there any reason why you don't want Reaper to control tempo?

[ulrik]

Is there any reason why you don't want Reaper to control tempo?

Yes, I have the NTempo staff with floating tempo in Notion that I really would like to keep for the feel of the composition, it would be impossible to accomplish in Reaper or any other Daw that I know of. Notion is absolutely the best software for this kind of "tempo recording/conducting" that I am aware of.

[pcartwright]

Try this:

Open you Notion project.
Go to file, export MIDI, and save the MIDI file someplace easy to get to (like your computer desktop)
Close Notion
Open Reaper, add the necessary rewire channel, etc. Notion should open automatically. Pick the Notion project you just closed. Reaper is now acting as host.
Import the MIDI file into Reaper. Reaper will ask if you want to map the tempo from the MIDI file. Say yes.

Reaper should now have the same tempo map as your Notion file's nTempo recording. It's not a live solution, but like I said earlier, I have never been able to get Reaper's "get tempo from slave" feature to work... on any rewire program.

[ulrik]

Try this:

Open you Notion project.
Go to file, export MIDI, and save the MIDI file someplace easy to get to (like your computer desktop)
Close Notion
Open Reaper, add the necessary rewire channel, etc. Notion should open automatically. Pick the Notion project you just closed. Reaper is now acting as host.
Import the MIDI file into Reaper. Reaper will ask if you want to map the tempo from the MIDI file. Say yes.

Reaper should now have the same tempo map as your Notion file's nTempo recording. It's not a live solution, but like I said earlier, I have never been able to get Reaper's "get tempo from slave" feature to work... on any rewire program.

You've made my day, or I should say night, it's 23:54 . It is working great, I don't know why I didn't think about doing it like this....Thank you and thank you again!

[elerouxx]

I'm happy to see you are getting Notion4 and Reaper to work properly rewired.

It also seems to work fine on my 32-bit windows notebook.
I have some issues on my desktop computer. I can't identify de problem: sometimes it works, sometimes doesn't. I think it's somehow related to having both 32 and 64-bit versions installed... perhaps...

N4 32-bit doesn't work anymore with neither Reaper 32 or 64 bits.

[Surfwhammy]

I'm happy to see you are getting Notion4 and Reaper to work properly rewired.

It also seems to work fine on my 32-bit windows notebook.
I have some issues on my desktop computer. I can't identify de problem: sometimes it works, sometimes doesn't. I think it's somehow related to having both 32 and 64-bit versions installed... perhaps...

N4 32-bit doesn't work anymore with neither Reaper 32 or 64 bits.

On the Mac when you do ReWire experiments for a while and a few parameters or settings are incorrect, some of the infrastructure or application-specific code gets a bit confused, which in some instances can include the external digital audio interface drivers becoming confused, and the way to clear this is to reboot the computer and external digital audio interface . . .

Behind the scenes there is a lot of stuff happening, and most of it happens at elevated priorities and privileges, because it so highly time-sensitive, and sometimes an incorrectly set parameter can cause the infrastructure or the application-specific implementation code to encounter a memory exception or whatever which is not handled as elegantly as it should, and once that happens, the operating system itself can do some odd things, hence the reboot strategy . . .

On the good side, once you discover the precise set of rules, parameters, settings, options, procedures, and so forth for doing ReWire, everything works accurately, precisely, and smoothly, which is fabulous . . .

Fabulous!

[Surfwhammy]

Try this:

Open you Notion project.
Go to file, export MIDI, and save the MIDI file someplace easy to get to (like your computer desktop)
Close Notion
Open Reaper, add the necessary rewire channel, etc. Notion should open automatically. Pick the Notion project you just closed. Reaper is now acting as host.
Import the MIDI file into Reaper. Reaper will ask if you want to map the tempo from the MIDI file. Say yes.

Reaper should now have the same tempo map as your Notion file's nTempo recording. It's not a live solution, but like I said earlier, I have never been able to get Reaper's "get tempo from slave" feature to work... on any rewire program.

You've made my day, or I should say night, it's 23:54 . It is working great, I don't know why I didn't think about doing it like this....Thank you and thank you again!

+1 Brilliant thinking!

[pcartwright]

It also seems to work fine on my 32-bit windows notebook.
I have some issues on my desktop computer. I can't identify de problem: sometimes it works, sometimes doesn't. I think it's somehow related to having both 32 and 64-bit versions installed... perhaps...

N4 32-bit doesn't work anymore with neither Reaper 32 or 64 bits.

What soundcards/audio interfaces do you have on your notebook and desktop? I was getting glitches using rewire until I used ASIO4ALL which allowed me to properly buffer the audio signal. I would give ASIO4ALL a try and see if it resolves your issue.

[elerouxx]

What soundcards/audio interfaces do you have on your notebook and desktop? I was getting glitches using rewire until I used ASIO4ALL which allowed me to properly buffer the audio signal. I would give ASIO4ALL a try and see if it resolves your issue.

I am using the cheap stuff, some onboard Realtek HD audio device, and I have been using asio4all for a while now (wonderful driver!). But audio is not the problem.

The problem is how the rewired applications act, if they act at all. Sometimes they work, sometimes not. I see that Rewire is a little tricky, and as Surfwhammy said, it kinda gets corrupted or something and requires frequent restarts.

I'm trying to write down a table of what works and what doesn't. For instance, Reaper works better as a host but it's hard to use it as a slave - there doesn't seem to be transport control from Reaper as slave to Notion.

Notion4/64 as slave and rewire/64 as host do fine, but I use several VST instruments that are not available in 64 bits. I'm trying to figure out how to rewire N4/32 to Reaper.

Anyway, thanks for your help! I'll try to post some more accurate information about what's happening in this box. It has been running for more than one year and I suspect it's time for a full reinstall anyway.