What's this scale coming from my MIDI-fied voice?

Hi,

I'm frequently using my own voice to lead a new project.
In this one, my real voice is MIDI-fied from a mic through
an Axon interface driving a soft-synth tuned in 12-t ET.
All in real-time.
However, I sing many microtunings (including pitch-bends)
but I don't find a microtuning scale of reference.

From an improvisation, I need now something more consistent,
more technical, to change this project into a new composition.
I'd like to get your standpoint and advice:
What is this scale?
or
How to find it?

Here a short sketch where I play a kind of flute from my voice
over a basic tonal background.

<http://www.open-tuning.com/mp/Midi-voice.mp3>

Cheers,
Philippe