MOTM

Moe writes:
>>Are you (JH) thinking about tuned feedback/delay lines under voltage control 
ala Ron Berry's stuff? Now THAT'S what would be the killer jewel in the MOTM 
crown! I want several!!!<<

There are many pieces of gear floating around out there that already do this. I 
have three different digital delays: Lexicon PCM-41, Deltalab Effectron, Roland 
SDE-3000, and they all have voltage control of the delay time. In addition the 
Roland brings the feedback loop to the outside world so you can patch in 
whatever you want, such as filter dampening. I just pulled my SDE out of the 
rack two days ago in preparation to see how well I can get it to track the 
keyboard. So look around at your current gear and you might already have 
something that does this.

Also since I'm in the middle of my research to make another push forward in 
synthetic violin/cello realism, I've also searched around for out the ordinary 
software that might aid in realistic acoustic modelling. Here's a couple of 
interesting ones:

1) "Spectral Delay" by Native Instruments. I've downloaded the demo and played 
around with it. If you want the most sophisticated formant filtering around, 
this will do it in realtime with any audio input. You can adjust the levels of 
160 frequency bands across the audio spectrum from zero to full volume. You can 
mimic the sound of just about any resonant body with this. I've been 
considering buying it just for this feature alone.

2) "Tera" by VirSyn. This is a software virtual analog synth, but with extra 
stuff there for physical modelling. It includes a controllable delay line 
specifically for physical modelling. It also has two 128 pole filters that 
allow you to draw complex formants right on screen, and you can morph between 
the two if you want. Even beyond this there is a three band parametric formant 
filter.

3) "Tassman" by Applied Acoustics. Also a software virtual analog synth with 
extras for physical modelling. It's been around for a little while.

And as long as we're on the subject, the latest Keyboard magazine gave a tip on 
how to make a parametric EQ pluggin act like a wah-wah pedal, but this same tip 
can basically turn any parametric EQ into a parametric formant filter much like 
Polyfusions old module. This could be more useful than a fixed filter for some 
things. Tip: Using a stereo parametric EQ, split a signal and run it through 
both halves, then invert the output of one channel and mix the two together. 
Now raise the bands you want on just one channel (and set band freqs and width 
too) and you will only hear the audio from those bands, because the inverting 
process will cancel out all other audio. I tried it with an analog parametric 
EQ and it works quite well. It gives you much more extreme tone shaping than 
using a parametric EQ hooked up in a conventional way.

-Elhardt

>
>
>>Are you (JH) thinking about tuned feedback/delay lines under 
>>voltage control ala Ron Berry's stuff?
>>

I have a Modcan VC Delay on order mainly to experiment with some of 
Ron's techniques. The Modcan has a short enough delay time to do this, 
and all parameters are under voltage contro.  Will post a review once I 
get my unit and have had a few days to try some things...

It takes two things to 'play scales' with a VC delay line - one is 
sufficiently short delay time capability, but equally important is 
the delay time resolution. I haven't been able to play with this 
stuff myself, but I wouldn't be surprised if you had to vary the 
delay time in sub-millisecond increments between notes.

Good luck with your experiment!

Moe

>>>>
I have a Modcan VC Delay on order mainly to experiment with some of 
Ron's techniques. The Modcan has a short enough delay time to do 
this, 
and all parameters are under voltage contro. Will post a review once 
I 
get my unit and have had a few days to try some things...
<<<<

> There are many pieces of gear floating around out there that already do
this. I
> have three different digital delays: Lexicon PCM-41, Deltalab Effectron,
Roland
> SDE-3000, and they all have voltage control of the delay time. In addition
the
> Roland brings the feedback loop to the outside world so you can patch in
> whatever you want, such as filter dampening. I just pulled my SDE out of
the
> rack two days ago in preparation to see how well I can get it to track the
> keyboard. So look around at your current gear and you might already have
> something that does this.

Maybe I shouldn't write too much about this at the moment - not before
I've read all the interesting links (thanks for the links!). And I'm not
thru
with reading the Yamaha patents yet.

But really, a VC delay line is only one tiny portion of the whole thing.
I have done experiments with VC delay lines in the past, but they sound
like a comb filter, not like a flute of a saxophone.

JH.

Moe's exactly right on this one.  You need very precise resolution and
short delay times for physical modeling, something not likely provided
by the VC digital delays.  That still doesn't mean they can't be fun for
other reasons though.

John Loffink
jloffink@... 

> -----Original Message-----
> From: mate_stubb [mailto:mate_stubb@...]
> Sent: Wednesday, November 06, 2002 7:26 PM
> To: motm@yahoogroups.com
> Subject: Re: [motm] JH thinks analogue/physical modelling
> 
> It takes two things to 'play scales' with a VC delay line - one is
> sufficiently short delay time capability, but equally important is
> the delay time resolution. I haven't been able to play with this
> stuff myself, but I wouldn't be surprised if you had to vary the
> delay time in sub-millisecond increments between notes.
> 
> Good luck with your experiment!
> 
> Moe
>

Will Blacet's Time Machine work?  Short delays, VC, regen...

--- In motm@y..., Les Mizzell <lesmizz@b...> wrote:
> >
> >
> >>Are you (JH) thinking about tuned feedback/delay lines under 
> >>voltage control ala Ron Berry's stuff?
> >>
> 
> I have a Modcan VC Delay on order mainly to experiment with some 
of 
> Ron's techniques. The Modcan has a short enough delay time to do 
this, 
> and all parameters are under voltage contro.  Will post a review 
once I 
> get my unit and have had a few days to try some things...

JH writes:
>>But really, a VC delay line is only one tiny portion of the whole thing. I 
have done experiments with VC delay lines in the past, but they sound like a 
comb filter, not like a flute of a saxophone.<<

They are good for plucked string type sounds though. A couple of us have tried 
it on the Nord Modular but couldn't get the delay module to track the keyboard. 
The plucked string sounds were quite realistic but unplayable. I figured maybe 
a sampler would help. A person could tune the delay on a note by note basis and 
sample each one, then play the final sound back on a sampler.

John Loffink writes:
>>Moe's exactly right on this one.  You need very precise resolution and
short delay times for physical modeling, something not likely provided
by the VC digital delays.  That still doesn't mean they can't be fun for
other reasons though.<<

That's why some things are better done completely in the digital domain. That's 
why I listed some useful software geared toward this.

BTW, I found out that Yamaha has something called Poly-VL. It's their VL series 
of physical modeling done in software that runs polyphonically on a Pentium III 
based computer. The problem is it doesn't appear to be available in the US.

-Elhardt

> They are good for plucked string type sounds though. A couple of us have
tried
> it on the Nord Modular but couldn't get the delay module to track the
keyboard.
> The plucked string sounds were quite realistic but unplayable. I figured
maybe
> a sampler would help. A person could tune the delay on a note by note
basis and
> sample each one, then play the final sound back on a sampler.

You're loosing all the fun of performance parameters then ...


> >>Moe's exactly right on this one.  You need very precise resolution and
> short delay times for physical modeling, something not likely provided
> by the VC digital delays.  That still doesn't mean they can't be fun for
> other reasons though.<<
>
> That's why some things are better done completely in the digital domain.
That's
> why I listed some useful software geared toward this.

I don't worry about the resolution of a VC delay. Really.
The fact that most delays are not built to handle fine resolution (why
should they?)
doesn't mean it's impossible (or even difficult) to make them.
Tracking is a problem, expecially if you leave the case of a pure delay
loop,
but then again this could be solved with an autotune routine which
calibrates
a CV conversion table once the model is set up.

Pro digital: can handle much more parameters easily
Pro analogue: more intuitive, less aliasing problems


> BTW, I found out that Yamaha has something called Poly-VL. It's their VL
series
> of physical modeling done in software that runs polyphonically on a
Pentium III
> based computer. The problem is it doesn't appear to be available in the
US.

I didn't know that! So maybe now I don't have to buy 3 VL1m's to expand
my VL7 for 7-note polyphony ?!

JH.

I think we're all somewhat in agreement here, but just to clarify, I was
referring specifically to the units that were named: Lexicon PCM-41,
Deltalab Effectron, Roland SDE-3000. I doubt these have the resolution
for physical modeling.  On the other hand, it's certainly possible to
design a digital delay with the fine resolution needed, I've just never
seen anyone do it.  

> I don't worry about the resolution of a VC delay. Really.
> The fact that most delays are not built to handle fine resolution (why
> should they?)
> doesn't mean it's impossible (or even difficult) to make them.
> Tracking is a problem, expecially if you leave the case of a pure
delay
> loop,
> but then again this could be solved with an autotune routine which
> calibrates
> a CV conversion table once the model is set up.
> 
> Pro digital: can handle much more parameters easily
> Pro analogue: more intuitive, less aliasing problems

We're straying a little off topic here, but just to clarify, one of the
weaknesses of the Nord Modular is that its integer parameter values will
also limit the resolution.  If working in the digital domain I would
recommend something like Native Instruments' Reaktor which uses floating
point values throughout, giving fine resolution where needed.

> They are good for plucked string type sounds though. A couple of us
have 
> tried it on the Nord Modular but couldn't get the delay module to
track 
> the keyboard. The plucked string sounds were quite realistic but 
> unplayable. I figured maybe a sampler would help. A person could tune
the 
> delay on a note by note basis and sample each one, then play the final

> sound back on a sampler.

John Loffink
jloffink@...

A couple of links for the Poly-VL and a link for
d/ling.

--Shemp

http://www.yamaha.co.jp/english/news/99021802.html

http://www.harmony-central.com/Newp/1999/SoftSynthesizer-Poly-VL.html

S-YXG100\ufffd{PolyVL
S-YXG100 PVLVersion:1.11.46

Download the software here (I haven't tried it, it is
in Japanese):
http://www.yamaha.co.jp/xg/download/s-synth/download.html

Plug-In Board:
http://www.yamaha-music.co.uk/products/sections/PLG150VL.asp?sectionid=76

> BTW, I found out that Yamaha has something called
> Poly-VL. It's their VL series 
> of physical modeling done in software that runs
> polyphonically on a Pentium III 
> based computer. The problem is it doesn't appear to
> be available in the US.


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>BTW, I found out that Yamaha has something called Poly-VL. It's 
>their VL series
>of physical modeling done in software that runs polyphonically on a 
>Pentium III
>based computer. The problem is it doesn't appear to be available in the US.


Maybe it is available from the US Sage distributor?

Is this poly-VL thing for real, any info available, or are we just 
waiting for the screenshots to be faked in Photoshop.


Simon
Canberra
AUSTRALIA

Simon writes:
>>Maybe it is available from the US Sage distributor? Is this poly-VL thing for 
real, any info available, or are we just waiting for the screenshots to be 
faked in Photoshop.<<

Yes it's real and just a post or two up Tentochi gave some links. The problem 
is it appears to have only been released in Japan, with Japanese documentation 
and pricing. Only one or two US/UK press releases let me know it existed in the 
first place.

JH writes:
>>You're loosing all the fun of performance parameters then.<<

For plucked string sounds a sampler has many performance parameters to alter 
and expressively play a sample. For wind instruments, that's another story.

>>I didn't know that! So maybe now I don't have to buy 3 VL1m's to expand my 
VL7 for 7-note polyphony ?!<<

You could sell what you have and get Poly-VL which I think can do 8 voices. 
Maybe the polyphony isn't needed, but for those of us who bought too late to 
get the dual operator VL1 (or whatever they call it), I'm thinking the Poly-VL 
might be a good alternative and run the more advanced patches I've heard. 
That's if you don't mind having to use a computer.

John Loffink writes:
>>We're straying a little off topic here, but just to clarify, one of the
weaknesses of the Nord Modular is that its integer parameter values will
also limit the resolution.  If working in the digital domain I would
recommend something like Native Instruments' Reaktor which uses floating
point values throughout, giving fine resolution where needed.<<

Yes, it is the Nord's integer intervals that didn't allow keyboard tracking if 
I remember correctly. To get around some of the Nord Mod limitations including 
delay memory and total module count I've already bought Reaktor.

-Elhardt

>  >>Maybe it is available from the US Sage distributor? Is this 
>poly-VL thing for
>real, any info available, or are we just waiting for the screenshots to be
>faked in Photoshop.<<

>Yes it's real and just a post or two up Tentochi gave some links. The problem
>is it appears to have only been released in Japan, with Japanese documentation
>and pricing. Only one or two US/UK press releases let me know it 
>existed in the
>first place.

Is it a recent product, and still available?

Is it software only, is there any hardware to go inside the PC?

What does it sell for in Japan?


Thanks,
Simon
Canberra
AUSTRALIA

Checked them already. But really, I only asked 3 simple questions 
which could have been answered with as much effort as it took for you 
to tell me to check the links again, to look for information that 
doesn't seem to be there!

It wasn't clear to me exactly what the Poly-VL was, what the Yamaha 
SoftSynthesizer was, whether actual hardware was required, if so what 
that hardware actually was, etc. I couldn't find any information on 
pricing and current availability.

It seems that it maybe needs some sort of Yamaha SoftSynthesizer 
soundcard or sound module that has a connector for the Poly-VL plugin 
board. Just doesn't seem to be a software solution, as I was 
expecting, but more a hardware solution that uses the host CPU for 
extra DSP power.

Info says it was released in February 1999, but I didn't notice if it 
is still available, and what a current price would be.

Maybe someone has checked the current pricing and availability, and 
can let us know if it is still available in Japan and what it costs.


Simon
Canberra
AUSTRALIA

>Simon--
>
>As John said, everything is in the links I posted.
>Check them out.
>
>Cheers!
>Todd
>
>--- Simon <simon@...> wrote:
>>  >  >>Maybe it is available from the US Sage
>>  distributor? Is this
>>  >poly-VL thing for
>>  >real, any info available, or are we just waiting
>>  for the screenshots to be
>>  >faked in Photoshop.<<
>>
>>  >Yes it's real and just a post or two up Tentochi
>>  gave some links. The problem
>>  >is it appears to have only been released in Japan,
>>  with Japanese documentation
>>  >and pricing. Only one or two US/UK press releases
>>  let me know it
>>  >existed in the
>>  >first place.
>  >
>  > Is it a recent product, and still available?
>>
>  > Is it software only, is there any hardware to go
>>  inside the PC?
>>
>>  What does it sell for in Japan?
>>
>>
>>  Thanks,
>>  Simon
>>  Canberra
>>  AUSTRALIA
>>
>> 
>>
>>  Your use of Yahoo! Groups is subject to
>>  http://docs.yahoo.com/info/terms/
>>
>>
>
>
>__________________________________________________
>Do you Yahoo!?
>U2 on LAUNCH - Exclusive greatest hits videos
>http://launch.yahoo.com/u2

Simon writes:
>>It wasn't clear to me exactly what the Poly-VL was, what the Yamaha 
SoftSynthesizer was, whether actual hardware was required, if so what that 
hardware actually was, etc. I couldn't find any information on pricing and 
current availability. It seems that it maybe needs some sort of Yamaha 
SoftSynthesizer soundcard or sound module that has a connector for the Poly-VL 
plugin board. Just doesn't seem to be a software solution, as I was expecting, 
but more a hardware solution that uses the host CPU for extra DSP power.<<

I tried to search some Japanese sites for pricing a couple of weeks ago, but 
not being able to read Japanese, I wasn't able to navigate to a price. I was 
also a bit confused as to whether it was software only. But from what I read it 
sounded as if it was a software only solution. The following quotes from the 
press release seem to support that.

"Yamaha SoftSynthesizer embodies software technology that enables the playback 
of MIDI data even without dedicated hardware such as an external tone generator 
or a sound card."

"The Poly-VL, a plug-in module for the SoftSynthesizer S-YXG100" (if it's a 
module for a software based synth, it should be a software plug-in much like a 
VST plug-in)

"is designed to take advantage of the performance of Intel\ufffd s Pentium\ufffd III 
processor." (since it needs the power of a Pentium III's parallel floating 
point unit, it's most likely not hardware based)

-Elhardt

>Simon writes:
>>>It wasn't clear to me exactly what the Poly-VL was, what the Yamaha
>SoftSynthesizer was, whether actual hardware was required, if so what that
>hardware actually was, etc. I couldn't find any information on pricing and
>current availability. It seems that it maybe needs some sort of Yamaha
>SoftSynthesizer soundcard or sound module that has a connector for the Poly-VL
>plugin board. Just doesn't seem to be a software solution, as I was expecting,
>but more a hardware solution that uses the host CPU for extra DSP power.<<

>I tried to search some Japanese sites for pricing a couple of weeks ago, but
>not being able to read Japanese, I wasn't able to navigate to a price. I was
>also a bit confused as to whether it was software only. But from 
>what I read it
>sounded as if it was a software only solution. The following quotes from the
>press release seem to support that.
>
>"Yamaha SoftSynthesizer embodies software technology that enables the playback
>of MIDI data even without dedicated hardware such as an external 
>tone generator
>or a sound card."
>
>"The Poly-VL, a plug-in module for the SoftSynthesizer S-YXG100" (if it's a
>module for a software based synth, it should be a software plug-in much like a
>VST plug-in)
>
>"is designed to take advantage of the performance of Intel’ s Pentium® III
>processor." (since it needs the power of a Pentium III's parallel floating
>point unit, it's most likely not hardware based)


But, Todd calls it a 'board' in describing this link, and on the page 
it is called a 'PLG Card'...
>Plug-In Board:
>http://www.yamaha-music.co.uk/products/sections/PLG150VL.asp?sectionid=76
...this seems to be a plugin pcb for the SW1000XG PCI Audio MIDI 
Board, and XG PLG compatible synths, the system is discussed here...
http://www.yamahasynth.com/pro/plg150/ms.html
The SW1000XG is described here...
http://www.xgfactory.com/


Then on this link...
http://www.yamaha.co.jp/english/news/99021802.html
...it says that the Poly_VL is a plugin module for the 
SoftSynthesizer S-YXG100 To me, module means hardware/pcb module that 
connects as a Daughterboard to a sound card. It also mentions the 
SoftSynthesizer S-YXG50, but doesn't specifically say that this works 
with the Poly-VL plugin module.



So, it seems that Todd has provded links to two different products, 
one being a plugin Poly-VL pcb for the SW1000XG soundcard, the other 
being a possible software plugin for a possible softsynth called the 
S-YXG100.


I can't read Japanese, so I can't find out much more.


Simon
Canberra
AUSTRALIA

Some of the different names/model numbers for it...

S-YXG100 Plus
S-YXG100+VL
Sondious XG


Some info in English...

http://www.yamaha.co.uk/xg/html/midplug/m_mid9.htm
http://www.yamaha.co.uk/xg/html/midplug/m_sond4.htm

http://www.liveupdate.com/yamahapress.html


Says it is based on the VL70m, is this much the same as the VL7?

Still not clear if the files on the Japanese site are a free full 
version, or just a demo/trial.

I can't try them out as I am on a Mac.

Seems to be pretty high latency, 400MS, but can be tuned down to 80MS 
with the correct drivers.

Might be interesting to dedicate an older laptop to it.


Simon
Canberra
AUSTRALIA

>Some of the different names/model numbers for it...
>
>S-YXG100 Plus
>S-YXG100+VL
>Sondious XG

That should be Sondius XG.

Here it is for sale...
http://www.digitalmusicworld.com/superstore/product.asp?pf%5Fid=2582&CT=&mscssid=DK6DNDFA026G8K6XSG1HA6167222EBGA

Says that after payment you receive a keydisk program to unlock the 
downloaded trial version to a full version.

So I guess that the available downloads are for the trial/demo version.

I would be interested to read a review if someone wants to try it out.


Simon
Canberra
AUSTRALIA

Another interesting Physical Modelling system is the Korg OASYS PCI 
card.  There are some very nice PM modules that have been created and you 
can download the "synthkit" development tool and create your own on the 
Mac.  The downside is that the cards are no longer made and the OS support 
stopped with Windows ME and MacOS 9.x.  The OASYS doesn't have lots of 
polyphony but it has outstanding sound quality.

         Eric


At 03:56 PM 11/9/02 +1000, Simon wrote:

> >Simon writes:
> >>>It wasn't clear to me exactly what the Poly-VL was, what the Yamaha
> >SoftSynthesizer was, whether actual hardware was required, if so what that
> >hardware actually was, etc. I couldn't find any information on pricing and
> >current availability. It seems that it maybe needs some sort of Yamaha
> >SoftSynthesizer soundcard or sound module that has a connector for the 
> Poly-VL
> >plugin board. Just doesn't seem to be a software solution, as I was 
> expecting,
> >but more a hardware solution that uses the host CPU for extra DSP power.<<
>
> >I tried to search some Japanese sites for pricing a couple of weeks ago, but
> >not being able to read Japanese, I wasn't able to navigate to a price. I was
> >also a bit confused as to whether it was software only. But from
> >what I read it
> >sounded as if it was a software only solution. The following quotes from the
> >press release seem to support that.
> >
> >"Yamaha SoftSynthesizer embodies software technology that enables the 
> playback
> >of MIDI data even without dedicated hardware such as an external
> >tone generator
> >or a sound card."
> >
> >"The Poly-VL, a plug-in module for the SoftSynthesizer S-YXG100" (if it's a
> >module for a software based synth, it should be a software plug-in much 
> like a
> >VST plug-in)
> >
> >"is designed to take advantage of the performance of Intel’ s Pentium® III
> >processor." (since it needs the power of a Pentium III's parallel floating
> >point unit, it's most likely not hardware based)
>
>
>But, Todd calls it a 'board' in describing this link, and on the page
>it is called a 'PLG Card'...
> >Plug-In Board:
> >http://www.yamaha-music.co.uk/products/sections/PLG150VL.asp?sectionid=76
>...this seems to be a plugin pcb for the SW1000XG PCI Audio MIDI
>Board, and XG PLG compatible synths, the system is discussed here...
>http://www.yamahasynth.com/pro/plg150/ms.html
>The SW1000XG is described here...
>http://www.xgfactory.com/
>
>
>Then on this link...
>http://www.yamaha.co.jp/english/news/99021802.html
>...it says that the Poly_VL is a plugin module for the
>SoftSynthesizer S-YXG100 To me, module means hardware/pcb module that
>connects as a Daughterboard to a sound card. It also mentions the
>SoftSynthesizer S-YXG50, but doesn't specifically say that this works
>with the Poly-VL plugin module.
>
>
>
>So, it seems that Todd has provded links to two different products,
>one being a plugin Poly-VL pcb for the SW1000XG soundcard, the other
>being a possible software plugin for a possible softsynth called the
>S-YXG100.
>
>
>I can't read Japanese, so I can't find out much more.
>
>
>Simon
>Canberra
>AUSTRALIA
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

Simon writes:
>>But, Todd calls it a 'board' in describing this link, and on the page 
it is called a 'PLG Card'...Plug-In Board: http://www.yamaha-
music.co.uk/products/sections/PLG150VL.asp?sectionid=76<<

I'll have to visit the links you've posted, but don't forget Yamaha makes other 
products, such as a hardware VL board for a number of their hardware 
synthesizers and keyboards. Without confirming this, I think that's what the 
PLG150VL is.

>>Says it is based on the VL70m, is this much the same as the VL7?<<

The VL70m is a small half rack size module, and the VL7 is a keyboard. I 
believe they are the same functionally. The VL1 is a duophonic VL7. However I 
seem to remember Yamaha adding a new resonator type to the VL1 or VL7 that the 
VL70m didn't have. The're still all basically the same thing though.

>>So I guess that the available downloads are for the trial/demo version.<<

Since it isn't available in the US I'm assuming the software is probably all in 
Japanese and would be little use to us english speaking people.

-Elhardt

>  >>So I guess that the available downloads are for the trial/demo version.<<

>Since it isn't available in the US I'm assuming the software is 
>probably all in
>Japanese and would be little use to us english speaking people.


No...if you can translate UK english into US english, there is a 30 
day demo on the UK Yamaha site, as Sondius XG...
http://www.yamaha.co.uk/xg/html/midplug/m_mid9.htm

SYXG100  XG & VL PHYSICAL MODELING SOFTWARE SYNTH (ALSO INCLUDES THE 
NEW V4.0 PLAYER)
S-YXG100 (Sondius XG) combines the World beating S-YXG50 software XG 
engine with the already legendary  SVA physical modeling techniques 
used by Yamaha's ground breaking VL1, VL7 and VL70m tone generators.
(Win95/98/ME, Updated 26/07/2001)


Simon
Canberra
AUSTRALIA

>Simon writes:
>  >>But, Todd calls it a 'board' in describing this link, and on the page
>it is called a 'PLG Card'...Plug-In Board: 
><http://www.yamaha->http://www.yamaha-
>music.co.uk/products/sections/PLG150VL.asp?sectionid=76<<

>I'll have to visit the links you've posted, but don't forget Yamaha 
>makes other
>products, such as a hardware VL board for a number of their hardware
>synthesizers and keyboards. Without confirming this, I think that's what the
>PLG150VL is.

Yes, this is a hardware expander board for synths as well as the 
SW1000XG sound card.

Kenton makes a rack box to hold four of these cards, it can be used 
to expand an SW1000XG sound card, or can be bought with an 8 output 
card to allow standalone operation...
http://www.kentonuk.com/productspecs/plugstation.html

So, you could have four of these boards running in a 1U rack mount 
box, with stereo outputs from each module.

PLG cards currently available from Yamaha
PLG150AN Analogue Physical Modelling card
PLG150VL Virtual Acoustic Modelling card
PLG150PF Acclaimed award winning Piano card with sounds taken from 
Yamaha's flagship electric piano range
PLG150DX FM synthesis card based on the legendary DX7
PLG100VH DSP3 based (same DSP technology as used on the Yamaha 02Ri 
digital mixer) vocal harmoniser and effects board


Simon
Canberra
AUSTRALIA