Art Vista Orchestra Intonation System

[Hans Adamson]

Hello Everyone,

VIDEO AND STRING SERENADE DEMOS

The upcoming Art Vista Orchestra Intonation System allows MIDI orchestras to intonate like a real orchestra and not like a giant Equal Tempered organ. It consists of a VST3, a Receiver KSP script, and templates for Cubase and other DAWs. The video shows the fundamental functions of the software: ARPI - Automatic Real-time Performance Intonation - switching automatically between melodic and harmonic modes, as well as the optional Orchestra Stretch. In the first video a scale and some chords are played twice over the keyboard, first with maximum intonation and stretch, and then with no intonation or stretch (Equal Tempered). Since the recording is made with pure sine waves (i.e. no harmonics) it is necessary to hear the sound through full range speakers.

https://www.youtube.com/watch?v=x5sWvCFQiAA
There is also a String Serenade by Rickard Gustafsson. The first version below is intonated and has orchestra stretch. The second version is standard Equal Temperament and no stretch.

https://soundcloud.com/art-vista-produc ... -stretch-5

https://soundcloud.com/art-vista-produc ... intonation

Let me know if you have any questions!

/Hans

Hans Adamson
Art Vista Productions
Samples With Soul
http://www.artvista.net/

[Ah_Dziz]

Is there a multi script version of this that can directly manipulate midi pitch bend messages? Many libraries won't let you fiddle around in Their scripts at the instrument level. If you can implement this with midi then it will have some very nice uses for me.

[Ah_Dziz]

Either way this is a cool thing. I would love to see more smart performance based modifiers for compositions in a daw.

[Tj Shredder]

How does it compare to MTS-ESP?

[Hans Adamson]

Is there a multi script version of this that can directly manipulate midi pitch bend messages? Many libraries won't let you fiddle around in Their scripts at the instrument level. If you can implement this with midi then it will have some very nice uses for me.

Hello Ah_Dziz,

No there is no multi-script version. Also the system does not use pitch bend, but the samplers built in function for tuning individual note event.

/Hans

[Hans Adamson]

How does it compare to MTS-ESP?

Hello TJ,

From what I understand, the MTS-ESP system provides a way for the user to make micro-tuning changes to multiple plugins at once, and so does the Art Vista Orchestra Intonation System. But that's where the similarities end. The Art Vista system analyzes the musical content in real-time and automatically makes the same intonation choices that a real member of the orchestra would do in a performance - based on Western music theory and musician tradition. The Art Vista system relies on patented technology in its algorithms.

Just as the MTS-ESP system the Art Vista system requires compatibility from other software in the production chain. The DAW must be compatible, the plugin must be compatible, and the instrument must be compatible. As of today, the following DAWs are compatible: Cubase, Reaper, Studio One. the sampler Kontakt is compatible, and generally all Kontakt instruments that has an open, available script slot are compatible. Compatibility may be stated by individual developers by posting the ARPI (Automatic Real-time Performance Intonation) compatibility logo on their website.

/Hans

[Tj Shredder]

Does that mean it adapts automatically to key changes and plays all intervals pure as overtones to the fundamental of the root note? How does it deal with ambiguities?

[Hans Adamson]

Does that mean it adapts automatically to key changes and plays all intervals pure as overtones to the fundamental of the root note? How does it deal with ambiguities?

TJ, thanks for asking!

Yes, it automatically adapts to key changes. It does not play "all intervals pure as overtones" as this is not the way orchestral musicians intonate their instrument. In a harmonic context where consonance is desirable, the note will be given maximum consonance, but in a melodic context the note will get an intonation that exaggerates the leading quality of a note. The "Intonator" VST3 parameter for this is called "Emotion". It is all automatic.

/Hans

[Tj Shredder]

Is that based on machine learning or are there simple rules behind? Did you publish a paper about it?

[Hans Adamson]

Is that based on machine learning or are there simple rules behind? Did you publish a paper about it?

I have no experience of machine learning and it is not involved. There are very complex rules behind the algorithms to catch every scenario of melody and harmony. No paper is published except for the U.S. patent that covers part of the algorithms. I am a musician and that's the basis for the creation of this system.

[jamcat]

So this is similar to Hermode Tuning?

Can it interact with SWAM instruments in Studio One?

[Ah_Dziz]

I'd love to see a version that manipulates midi directly so it can be used with non kontakt instruments as well as kontakt instruments that won't allow for extra scripting.

[Hans Adamson]

So this is similar to Hermode Tuning?

Can it interact with SWAM instruments in Studio One?

Hello Jamcat,

The Hermode Tuning is based on a patent by Werner and Herwig Mohrlok. That patent describes a method to apply "pure" tuning to keyboard-based instruments by setting a fixed octave for the roots and then allowing small shifts of the pure triads in order to make ends meet - in fact a kind of equalisation which Mohrlok in his patent describes as: "This measure according to the invention results in a kind of equalisation successive chords, with the consequence that the frequency differences of equal notes are reduced. Successive chords sound noticeably better.". This is the focus of the Mohrlok method. The Art Vista "ARPI" system (Automatic Real-time Performance Intonation) does not require a fixed octave and it identifies melodic lead-in notes. The Art Vista system also allows pure fifths or fourths being stacked which is not possible with the Mohrlok method. In its "Harmonic Mode", The "Art Vista Orchestra Intonation System" relies on sophisticated algorithms to identify chord progressions to provide harmonically tuned thirds and sevenths.

[Hans Adamson]

I'd love to see a version that manipulates midi directly so it can be used with non kontakt instruments as well as kontakt instruments that won't allow for extra scripting.

Hello Ah_Dziz,

The Art Vista system manipulates MIDI directly in the "Intonator" VST3 which passes on the MIDI tuning information to the sampler/synthesizer or other sound source. If the sound source is capable of tuning individual note events, it can possibly be made compatible with he system.

/Hans

[jamcat]

Thanks for the explanation, Hans.

So your system is using Just tuning for roots, and then tuning 3rds and 5ths relative to the chord root?

What about 7ths, etc? Are those tuned by ratio to the key, or do they use dynamic tuning?

Does it distinguish between the Major Tone and Minor Tone? What about the Grave Seventh and Harmonic Seventh?

What are the conditions that would make it choose any of the above?

And finally, how are augmented 4ths and diminished 5ths dealt with? Are they always ±10 cents, 17 cents, or 31 cents? Is the tuning fixed, or dynamic?