KVR Audio

Sjefke · Post by **Sjefke** » Sat Feb 06, 2016 10:37 am

I want to route both audio as well as midi,,...

Does anyone have experience with this program?
How is the kagency?

pljones · Post by **pljones** » Sat Feb 06, 2016 11:03 am

It doesn't add latency - it only routes, no processing - buffers get passed from input to output without (significant) delay.

Audio - I've used it happily on both Linux and Windows for years and wouldn't be without it.

MIDI - hm.

Developer politics - stay well clear, is all I can say.

Dewdman42 · Post by **Dewdman42** » Sun Feb 07, 2016 8:32 pm

jackOSX works great on my system, I have used it mainly for routing audio between OSX apps and wine apps. I've never been able to use the midi since it appears that this will only work with apps that have jack midi support built into them, which is pretty much nothing on OSX. Besides IAC generally works good enough.

camsr · Post by **camsr** » Sun Feb 07, 2016 10:07 pm

pljones wrote:It doesn't add latency - it only routes, no processing - buffers get passed from input to output without (significant) delay.

Does it resample between programs? Does it also convert PCM depths?

pljones · Post by **pljones** » Mon Feb 08, 2016 7:24 am

No, it routes audio buffers, so all connected apps have to run with the same settings as the JACK server.

camsr · Post by **camsr** » Mon Feb 08, 2016 7:56 pm

That sucks, it could be really useful if it did.

Dewdman42 · Post by **Dewdman42** » Tue Feb 09, 2016 6:26 am

no it would really suck if it was trying to do that...it would add incredible latency and cpu overhead. that's the job for another tool. Jack does one thing very well...its shuffles audio around between apps in a very efficient manner.

camsr · Post by **camsr** » Tue Feb 09, 2016 8:46 pm

Dewdman42 wrote:no it would really suck if it was trying to do that...it would add incredible latency and cpu overhead. that's the job for another tool. Jack does one thing very well...its shuffles audio around between apps in a very efficient manner.

Yes I understand that. For my desired uses, it would be necessary.
Other programs like JACK seem to be buggy by user reviews. How does JACK function without system drivers btw? It uses the Daemon program, but how do applications interface with it?

pljones · Post by **pljones** » Wed Feb 10, 2016 7:20 am

On Windows, there's a Jack ASIO driver. I don't know if there's a Core driver on MacOS. Otherwise, programs have to be written to work with Jack via libjack, which tends to be the Linux way. (For some reason, PortAudio doesn't support Jack on Windows unless you compile it yourself, so developers using it as their platform independent library could use Jack on Windows but tend not to.)

Dewdman42 · Post by **Dewdman42** » Wed Feb 10, 2016 7:21 am

on Mac there is JackOSX. It works with any audio program.

nbd · Post by **nbd** » Thu Feb 11, 2016 12:29 pm

There are not many programs that support Jack-midi (in Linux). Most of them are using ALSA midi, which is not optimal.

Jack-midi would be the best option, because then you would have audio and midi in perfect sync always and things like offline rendering (similar to Bounce in Logic) would be possible for software synths using midi.

That aside, I think Jack is definitely the most easiest / robust way of handling audio routing between programs I have seen.

Dewdman42 · Post by **Dewdman42** » Thu Feb 11, 2016 3:53 pm

Yep I have always felt that the jack technology is pretty much more like rewire, if everyone would just adopt it into their software we would have two directional license free rewire functionality in a universal way. sample accurate synchronization of audio and midi between apps and potentially even across the network someday

marioisaac · Post by **marioisaac** » Thu Feb 11, 2016 3:59 pm

Somewhat complicated to Install, but once setup it works like a charm for routing Audio. MIDI does not work for me.

On Windows 7, with buffer size 256, Audio Latency is about 8 ms.

For MIDI:
On MAC, use IAC Virtual MIDI Port.
On Windows, LoopMIDI.

Both of these work like a charm for routing MIDI.

marioisaac · Post by **marioisaac** » Thu Feb 11, 2016 4:05 pm

nbd wrote:There are not many programs that support Jack-midi (in Linux). Most of them are using ALSA midi, which is not optimal.

Jack-midi would be the best option, because then you would have audio and midi in perfect sync always and things like offline rendering (similar to Bounce in Logic) would be possible for software synths using midi.

That aside, I think Jack is definitely the most easiest / robust way of handling audio routing between programs I have seen.

Internal MIDI Routing works perfectly with IAC Virtual MIDI, and LoopMIDI. At least for MAC and Windows this problem is solved.

marioisaac · Post by **marioisaac** » Thu Feb 11, 2016 4:20 pm

Dewdman42 wrote:Yep I have always felt that the jack technology is pretty much more like rewire, if everyone would just adopt it into their software we would have two directional license free rewire functionality in a universal way. sample accurate synchronization of audio and midi between apps and potentially even across the network someday

Rewire is past; JACK is future.

Rewire one direction Audio; JACK Multi-directional Audio.

So yes, I'm with you; developers should start adopting JACK instead of Rewire.

Jack Audio experiences?