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Apps to makes a Basslines with Guitar
I used to he with Tonestack but switched to the Nembrini sims I like the sound!
While on tonestack I enjoy making some distorted octavized guitar as a bass. I tried to use an octavizer with a bass amp sim and it did give a very cool Fender Presicion Bass plucky sound, but the tracking was not good enough to jam with.
Maybe there are some synth options? That makes synth bass from guitar? Do you know any individual effect apps I can load before my amp sim? I hear the Nembrini octaviser suffered from latency, cant have that when jamming.
Its about finding the one with the least ofc..
Thanx! 
Comments
There's always going to be latency with a pitch shifter and also with audio to midi apps.
You might check out Yonac Taurus and Roxsyn. They're two very different animals, and probably you do not want to put them in front of an amp. But you can get some gnarly bass out of 'em (with a lot of tweaking and messing about with input levels and your playing style).
Roxsyn is less latency prone because it's not an octave shifter, but more like a synth that uses the incoming audio as-is.
Also, if you're using the apps as AUv3, you could use the ToneStack octavizer (and possibly other FX) in front of the Nembrini amp.