Are there any Poyphonic audio to Midi apps, fairly simple to use, with quality?

kobamoto

that are on par with ableton?

DMan

I’ve tried MIDImorphosis and I can say that it was not very good. Severe latency. Low notes were not tracking very well on guitar. It’s been a while since I tried it and I’m not very good at guitar, but I was not impressed at all. As for the other apps capable of it, hopefully someone else will chime in.

Tarekith

MIDI Guitar is amazingly good, not sure if it works for other sources though.

kobamoto

thanks guys, hadn't heard of MIDI Guitar before will have a look.

mistercharlie

@Tarekith said:
MIDI Guitar is amazingly good, not sure if it works for other sources though.

+1, although the design is confusing.

TheOriginalPaulB

@DMan said:
I’ve tried MIDImorphosis and I can say that it was not very good. Severe latency. Low notes were not tracking very well on guitar. It’s been a while since I tried it and I’m not very good at guitar, but I was not impressed at all. As for the other apps capable of it, hopefully someone else will chime in.

It’s physics. Low notes take longer to analyse due to having less wave cycles per second. Every octave you drop in pitch takes twice as long to produce the same number of cycles for analysis than the one above it. Polyphony adds a whole heap of extra analysis.
Not to say that it can’t be done better, but low notes will always take longer.

DMan

@TheOriginalPaulB said:

@DMan said:
I’ve tried MIDImorphosis and I can say that it was not very good. Severe latency. Low notes were not tracking very well on guitar. It’s been a while since I tried it and I’m not very good at guitar, but I was not impressed at all. As for the other apps capable of it, hopefully someone else will chime in.

It’s physics. Low notes take longer to analyse due to having less wave cycles per second. Every octave you drop in pitch takes twice as long to produce the same number of cycles for analysis than the one above it. Polyphony adds a whole heap of extra analysis.
Not to say that it can’t be done better, but low notes will always take longer.

I think it’s fantastic that the app and an iPad are capable of doing all that at once, I just know there is no way I could deal with that amount of latency. If all you need are swelling sounds it might work out.

Tim

I wanted to try out MIDI Guitar today. I couldn't get any output, and soon found this on their website:

" What is going on?
MIDI Guitar for IOS is temporary out of the store, because the fresh install is not compatible with IOS12.
Jamorigin is working hard to bring an update.
[...]
How long will it take for MIDI Guitar to be sold again and compatible with IOS12?
Jamorigin is working hard on it. The updated version is planned to be available in the beginning of december. "

espiegel123

@TheOriginalPaulB said:

@DMan said:
I’ve tried MIDImorphosis and I can say that it was not very good. Severe latency. Low notes were not tracking very well on guitar. It’s been a while since I tried it and I’m not very good at guitar, but I was not impressed at all. As for the other apps capable of it, hopefully someone else will chime in.

It’s physics. Low notes take longer to analyse due to having less wave cycles per second. Every octave you drop in pitch takes twice as long to produce the same number of cycles for analysis than the one above it. Polyphony adds a whole heap of extra analysis.
Not to say that it can’t be done better, but low notes will always take longer.

FWIW, Fishman doesn't rely on analysis of the fundamental and looks at higher order harmonics which helps with the latency. I don't know if JamOrigin uses the same idea for MIDI Guitar, but I am impressed by it. Much better than the Roland MIDI guitar I had ages and ages ago.

Worth noting that latency and lame tracking are different issues. I don't have any tracking issues with low notes and the latency is tolerable.

Quite amazing considering it isn't using a special pickup.

I do find that it can struggle with more than three or four notes at a time.

TheOriginalPaulB

@espiegel123 said:

@TheOriginalPaulB said:

@DMan said:
I’ve tried MIDImorphosis and I can say that it was not very good. Severe latency. Low notes were not tracking very well on guitar. It’s been a while since I tried it and I’m not very good at guitar, but I was not impressed at all. As for the other apps capable of it, hopefully someone else will chime in.

It’s physics. Low notes take longer to analyse due to having less wave cycles per second. Every octave you drop in pitch takes twice as long to produce the same number of cycles for analysis than the one above it. Polyphony adds a whole heap of extra analysis.
Not to say that it can’t be done better, but low notes will always take longer.

FWIW, Fishman doesn't rely on analysis of the fundamental and looks at higher order harmonics which helps with the latency. I don't know if JamOrigin uses the same idea for MIDI Guitar, but I am impressed by it. Much better than the Roland MIDI guitar I had ages and ages ago.

This may be a better method, but the harmonics also halve frequency with each drop in octave. It may require a bass guitar with a low B string, or even a double bass to show problems though.

Worth noting that latency and lame tracking are different issues. I don't have any tracking issues with low notes and the latency is tolerable.

Very true, but reducing the latency by analysing fewer cycles would make the end result less reliable and may well introduce tracking problems.