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Comments
I remember there was much discussion about this back when roxsyn came out but as far as I remember the conclusion was that roxsyn does not actually "synthesize" but rather just pitch shift, filter, distort, envelopes, etcetc
This is very interesting to me—I am fascinated by instrumental timbre and how we relate to it. To be honest, I don't think one can ever get to anything other than a tweaked violin which will sound like a synthesizer (that is, a sound created by modifying waves through all the techniques we know such as filters and envelopes). All sorts of interesting sounds can be created, but I doubt one can really "mimic" a sound in a realistic way, especially starting with recordings of acoustic instruments and modifying envelopes and harmonics to make them coincide with the textbook descriptions of instrumental timbres. A synthesized sound is always very clearly that. The "realistic" virtual instruments out there work with multisampling, not with synthesis, and even those are realistic (in the sense that they might fool you) under very specific conditions.
If the OP wants to make the violin sound like a trumpet, I think something that converts pitch to MIDI to control one of those virtual instruments is the way to go. This is especially hard with such idiomatic playing as in the examples provided: even if the harmonic timbre was "correct" in acoustic terms, it would still "sound" like a violin because it is playing violinesque phrases. Maybe starting with more basic sounds (scales, simple melodies) or melodies that would sound idiomatic for flutes and trumpets would be helpful to see how close the timbral manipulation can get you. How about a Bach suite for solo instrument which we've heard in all possible timbres?
Not being negative or critical, only very interestedly skeptic about it!
I think I'll push the OP's provided audio through MIDI Guitar and point the resulting MIDI at some
SWAM instruments. Again, the latency will not be apparent unless a drum or click track is running...
maybe I can dial in a metronome to indicate the latency. Then I'll switch between the audio original and
the MIDI-fied instrument on a 10 second cycle.
Should be fun.
UPDATE: #1 MIDI Guitar 2 into iSymphonic Flute in AUM
2 MIDI Guitar 2 into SWAM Trumpet in AUM
NOTE: MIDI Guitar 2 requires the purchase of a MIDI Out IAP. The AUv3 apps could be loaded into MIDI Guitar 2 with the purchase of another IAP but using AUM is probably
a good idea to be able to load AUM Projects and get the right apps configured but
using MIDI Guitar as a Standalone App and loading sounds into it also has it's benefits.
Comparing costs of the 2 approaches might be required if you don't own AUM.
I needed to use AUM to play the provided audio files in an AUM File Player since I don't
have an electric violin handy or the skills to play anything beyond "3 Blind Mice" without
any added embellishments and some shitty intonation.
@McD -- Very Interesting
A few comments here: the violin parts were from an acoustic violin with an LR Baggs bridge pickup. These provide a somewhat decent natural violin sound, with the typical piezo 'quack'. But they're not great for MIDI tracking.
Next Monday, I'm getting a new electric violin with a specialized pickup bridge that provides better pickup and output. We'll see how well it works for MIDI tracking. It (the new fiddle with the specialized bridge) should track much much better.
I'm hoping for some slower notes and/or less complicated parts - the (new) pickup output will be good enough to track cleanly. For example; I can play longer or simpler backing horn sounds ....or....a lush string synth pad sound. Then I would loop these, and play my 'non-MIDI' sounds on top. I would use various fx.
So....it doesn't surprise me the MIDI tracking to those violin clips isn't very good. I do appreciate you running those through MIDI. I love the virtual sounds, both the flute and trumpet.
I bought the MIDI Guitar 2 Software. I also use (intend to use) MIDI Utilities to 'DeGhost' extra notes and to 'Compress' unintentional notes. I'm not sure how much they'll help, but these may help some.
https://apps.apple.com/us/app/midi-tools/id1446209019
I think the MIDI is doing a pretty good job. Quite impressive indeed. What's messing with it is not the pickup itself but what I called "idiomatic" things, particularly the glissandi and double stops. If the MIDI or the SWAM trumpet are expecting a "monophonic" signal then they will glitch when it gets the double stops (not sure which one because I've never used either of them). The glissandi seem to track quite well, but that's not how a flute or a trumpet would play them so they sound weird as well. I think at this point it's more on how it's played than the gear that is used. Again just my two cents.
Good point... the iSumphonic accepts polyphony and the SWAM Trumpet does not.
I should have used some iSymphonic brass. Anyway... @Vmusic bought MIDI Guitar 2 and
will figure out how to leverage it for his live requirements. It can function as a standalone
with AUv3 hosting capabilities for instruments and FX. To get all the relevant IAP's it adds up to something like $55.