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Correct me if I am wrong - AN (Analog Physical Modeling) vs Virtual Acoustic (VL)

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Bassam
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Eminent Member
Topic starter
 

Hello,

When I see the word Physical Modeling in Sound Synthesis, the first thing that comes to my mind is the Korg MOSS (Multi Oscillators Synthesis System) which I am still using until now in a Korg Trinity, in which you can model the physical characteristics of an instrument (string speed and position for bowed strings, breath pressure and bell shape for reed instruments, etc.).

Does Yamaha define the above differently?

I was reading this morning about the Yamaha EX5 which is way older that my mysical knowledge, @ https://www.vintagesynth.com/yamaha/ex5.php, and the article states:

The EX5 features a unique Extended Synthesis system which incorporates a number of the most advanced tone generator technologies currently available...plus a full-featured sampling system. It offers a Four-Element Voice structure which allows for up to four independent waves from any of the tone generators. The tone generators implemented here include AWM2 (Advanced Wave Memory) Synthesis, AN (Analog Physical Modeling) Synthesis, FDSP (Formulated Digital Sound Processing) Synthesis and Virtual Acoustic (VL) Synthesis.

Yamaha AN Synthesis (Analog Physical Modeling) offers all the benefits of traditional analog synthesis with the stability, reproducability, and precise control of digital technology. It is capable of accurately reproducing the sound of classic analog synthesizers without patch cables, setting charts, or the frustrating instability that was the bane of the analog age. A standard (Poly) AN voice can have 1 AN element and from 1 to 3 AWM elements. Classic analog synth type sounds can be created with the single AN element alone. AWM elements can be added as necessary to "modernize" the sound.

Yamaha's Virtual Acoustic ("VL") Synthesis tone generation system applies sophisticated computer based "physical modeling" technology to musical sound synthesis, accurately simulating the very complex vibrations, resonances, reflections and other acoustic phenomena that occur in a real wind or string instrument. VL voices can have 1 VL element and from 1 to 3 AWM elements. The VL element can be used alone to emphasize the full realism and expressive power of the VL tone generator, or with added AWM elements for thicker textures.

So after reading the above, I guess VL is similar to the MOSS I am curretnly using, while AN is more like Analog Substractive Synth. Is that correct?

I am really interested in trying one of the Yamaha Synths that offers "Acoustic Instruments Physical Modeling", i.e. VL based on what I read above. Which one is a good option these days?

Note: Just learned about EX5 today, and VL1/7 like couple weeks ago.

Thanks.

 
Posted : 11/05/2022 1:14 pm
Posts: 1717
Member Admin
 

I don't know how we get his attention, but AnotherScott is an absolute gem on synthesis types, and their strengths and weaknesses.

Here's hoping he's got time, and sees this. Great writer, too.

I'm still learning from something he wrote about VA vs the samples approach of AWM2.

 
Posted : 11/05/2022 1:20 pm
Bassam
Posts: 0
Eminent Member
Topic starter
 

[quotePost id=116684]I don't know how we get his attention, but AnotherScott is an absolute gem on synthesis types, and their strengths and weaknesses.

Here's hoping he's got time, and sees this. Great writer, too.[/quotePost]

We need a tag feature with notifications 🙂

@AnotherScott

 
Posted : 11/05/2022 1:23 pm
Bassam
Posts: 0
Eminent Member
Topic starter
 

I'm still learning from something he wrote about VA vs the samples approach of AWM2.

Hey @Andrew, do you have a link for this? I am interested!

 
Posted : 11/05/2022 2:21 pm
Jason
Posts: 7907
Illustrious Member
 

VL's focus is modeling based on physical properties of the instruments it covered - plucked, bowed, wind, etc. And combining elements of each "real" instrument creates a frankenstein hybrid.

AN's focus is in modeling analog synthesizers. So AN is emulation/modeling of synthesized sound and VL is going after so-called "acoustic" instruments.

VL has been said to be difficult to program because the parameters are not traditional. There's a podcast (behind the synth) where VL is discussed mentioning the difficulty with coming up with settings that "behave".

 
Posted : 11/05/2022 5:45 pm
Bassam
Posts: 0
Eminent Member
Topic starter
 

Thanks Jason!

VL's focus is modeling based on physical properties of the instruments it covered - plucked, bowed, wind, etc. And combining elements of each "real" instrument creates a frankenstein hybrid.

That's clear!

AN's focus is in modeling analog synthesizers.

Clear as well! So the word "Physical Modeling" in this model is the modeling of the Cicuits of the Analog Synthesizers (Like VCM).
Sometimes I hear "Virtual Analog", I guess it refers to AN (Analog) and not VL (Acoustics)?

Now I understand that both are Physical Modeling, now thinking about it, Electrical/Circuits and Acoustics are both physical behaviours.

So AN is emulation/modeling of synthesized sound and VL

I lost you when you said "and VL". How "Analog" can emulate "Acoustics"?

 
Posted : 11/05/2022 5:58 pm
Jason
Posts: 7907
Illustrious Member
 

Something got truncated. I edited the post.

 
Posted : 11/05/2022 10:18 pm
Jason
Posts: 7907
Illustrious Member
 

Here's the discussion (behind the synth) alluded to earlier which covers VL:

https://yamahasynth.com/learn/behind-the-synth/vl1-retrospective-with-manny-fernandez-behind-the-synth

 
Posted : 11/05/2022 11:02 pm
Jason
Posts: 7907
Illustrious Member
 

Behind the synth ("BTS" ) is an incredibly rich resource. Both current and retrospective looks at Yamaha gear with the people who were "in the room" involved with the creation process. Sometimes other topics. There's a lot of "between the cracks" kind of information discussed.

When covering Yamaha products it's not just pushing gear -- you really do hear the stories and background of the development process at some level.

 
Posted : 12/05/2022 3:08 am
Bassam
Posts: 0
Eminent Member
Topic starter
 

Something got truncated. I edited the post.

Thanks Jason for the edits, now it is clear and it confirmed my understading.

And Thanks for sharing some resources and to others as well for participation, I will indeed listen to the discussion!

Acoustics Emulation (i.e. VL) is a technology that interests me a lot, it is sad to see that it was "Groundbreaking" and "It blew minds" and now we are not seeing it in the latest synths (I think only the Kronos/Nautilus kept 1 Physical Model, STR-1: Plucked Strings).

Here is my opinion (even before listening to what has been said), nothing can beat Sample Based Synthesis in emulating Real Acoustic Instruments, but here are some of the issues I face (and please keep in mind that I am an amateur):
- You need tons of samples to fully emulate how an instrument is played; size can easily go up high and fill up your sample memory.
- You need advanced programming that is not available onboard today's keyboards (a lot of conditions).
- The intruments are sometimes very realistic that, as a non player of that instrument in real life, I don't know how to play it on the keyboard. I am facing such difficulties on the PSR using S.Art. I know this sounds more like an advantage, but I will explain next what is the drawback.

On the other hand, you will sometimes need to emulate an acoustic instrument, but with some tweaks to meet your taste or style of play, and in this case a Model like VL can do the job perfectly. Samples + Effects is not an option here. In VL you can easily tweak the Physical Characteriscs such as Bow Speed, Breath Pressure, etc., that again you need tons of sample to emulate otherwise.
Also how cool is to make your Acoustic Sound electronic/synthy- (one type of tweaks I am talking about)? I guess VL offer better options than Samples in this case...

Finally editing, editing VL parameters sounds much easier than changing Samples or Audio Editing them...

I hope to see such a Tone Generator again in the next updates...

 
Posted : 12/05/2022 3:08 pm
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