This question seems obvious, but I have not yet found any solution: if I have for example 3 trumpets (which are actually from a same midi instrument), and I want to submit the same passage to the three, but I want each one to have small oscillations time and tuning, as well as any real human execution, which plugin I could use?
I know there is the Frank's midi plugin, but I plan on doing this detuning directly on the audio output.

Audio plugins with "chorus" in the name generally work by generating detuning of multiple audio duplicates. For timing, the MFX quantize (midi effect) has a "random" parameter, maybe useful. Modifying velocity might be a useful technique too. There's a plugin for that, maybe the randomize parameter of the MFX change velocity plugin. But maybe even better would be using different instruments or at least small edits to the one instrument.

Also, for audio, try the Sonitus modulator in Ensemble mode.

KPerry
Also, for audio, try the Sonitus modulator in Ensemble mode.

The Ensemble mode create actually a flanger and what I want is to have for example 3 different instances of the same trumpet independently controlled, each with a random detune. I think this plugin can not do that, right?

bvideo
Audio plugins with "chorus" in the name generally work by generating detuning of multiple audio duplicates. For timing, the MFX quantize (midi effect) has a "random" parameter, maybe useful. Modifying velocity might be a useful technique too. There's a plugin for that, maybe the randomize parameter of the MFX change velocity plugin. But maybe even better would be using different instruments or at least small edits to the one instrument.

Currently I make the corrections in the midi manually.
The problem is that "randomly" may create a variation each time Sonar plays the song, and that's a problem, because I could not have a consistent recording at each review, that is, every time I was to generate a final audio file, the trumpets would have a different interpretation, and that's not good.

The correct thing is that the plugin generates a random pattern variation and this pattern should be registered from then on.

In short, it is a way to facilitate the humanization of a midi pass without having to do this manually at all times.

I suppose "random" is not the same as "humanized" anyway. And using the word "interpretation" takes random completely off the table, and puts everything into the realm of performance, which probably means doing it manually.

rogeriodec
Currently I make the corrections in the midi manually.
The problem is that "randomly" may create a variation each time Sonar plays the song, and that's a problem, because I could not have a consistent recording at each review, that is, every time I was to generate a final audio file, the trumpets would have a different interpretation, and that's not good.

The correct thing is that the plugin generates a random pattern variation and this pattern should be registered from then on.

If using an audio effect either freeze or bounce the track(s). That will lock in the effect so it’s the same at every play-through.

As well as chorus effects, doublers such as the one by Waves can be used to generate “fake” multi-tracking from a single audio source.

If the effect is being done in MIDI tracks then bounce the MIDI and synth tracks down then delete, mute or archive the originals. Again, that will produce an audio track with the randomisations locked in so it’s the same every play through.

I guess you could write a small CAL script to insert random pitch bend events into your track with very small pitch-bend amounts.
 

msmcleod
I guess you could write a small CAL script to insert random pitch bend events into your track with very small pitch-bend amounts.
 

I have tried several times to learn CAL (including today again) but I confess it is very complicated, mainly because of the lack of decent documentation (most of which are not working).
In addition to the absurd syntax, standard LISP.
For all the answers I received, I think one thing that was meant to be simple, becomes something really complicated.

One day when you're bored create an hour of you diddling the pitch bend wheel with small amounts of random pitch bend, and record it. Put it in the browser. Drag it out when you need it, and use different sections each time.