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cbm
Joined: Oct 25, 2005
Posts: 381
Location: San Francisco
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ryktnk
Joined: Apr 24, 2008
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Peake
Joined: Jun 29, 2007
Posts: 1113
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 Posted: Thu May 22, 2008 1:38 pm Post subject:
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| Whoops.. Thank you for the redirect and for the soundbites. Is there a chance to hear a similar expo patch? Sorry for asking so much, but obviously I'm not going to do a build or two if it's not what I'm after. Thanks! |
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blue hell
Site Admin
Joined: Apr 03, 2004
Posts: 24590
Location: The Netherlands, Enschede
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| Posted: Thu May 22, 2008 2:14 pm Post subject:
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Is there a connection between tri core / saw core and lin / exp FM?
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Jan
also .. could someone please turn down the thermostat a bit.
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cbm
Joined: Oct 25, 2005
Posts: 381
Location: San Francisco
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| Posted: Thu May 22, 2008 2:21 pm Post subject:
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| Blue Hell wrote: | | Is there a connection between tri core / saw core and lin / exp FM? |
Not really. Both lin and exp modulation can be implemented in either a saw core or tri core oscillator.
-C
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Chris Muir
http://www.eardrill.com <– My jobby (more than a hobby, less than a job) |
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Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
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| Posted: Thu May 22, 2008 2:32 pm Post subject:
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| If people are using their TH VCO1s, I'm sure not finding many soundbites around the web. |
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blue hell
Site Admin
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Posts: 24590
Location: The Netherlands, Enschede
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| Posted: Thu May 22, 2008 2:40 pm Post subject:
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| cbm wrote: | | Not really. Both lin and exp modulation can be implemented in either a saw core or tri core oscillator. |
Ok, thanks.
Some posts in this thread seemed to suggest a connection between the phenomena and I didn't quite understand that.
_________________
Jan
also .. could someone please turn down the thermostat a bit.
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Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
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| Posted: Thu May 22, 2008 3:34 pm Post subject:
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There is, but it's "negative space", not positive. Expo saw FM isn't very interesting. Expo triangle core FM is extremely interesting.
Few seem to be exploring it, however, hence this thread. |
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v-un-v
Janitor
Joined: May 16, 2005
Posts: 8932
Location: Birmingham, England, UK
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| Posted: Thu May 22, 2008 3:45 pm Post subject:
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| Scott Stites wrote: | | I also discovered that this little VCO was a virtual powerhouse - I told Thomas later I felt like Isao Tomita playing that circuit I had on the breadboard. It's stable, responsive, very accurate and sounds absolutely marvelous - especially through the Mankato filter Thomas designed a few summers back. I was literally bowled over with how well it worked and how *good* it sounded. Perhaps a VCO is just a VCO, but I certainly felt inspired playing this one. |
Exactly what I thought when I heard this circuit (Tomita plays Debussy). Very sweet sounding- and 'warm' too.
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DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN. |
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blue hell
Site Admin
Joined: Apr 03, 2004
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Location: The Netherlands, Enschede
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| Posted: Thu May 22, 2008 3:50 pm Post subject:
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| Peake wrote: | | There is, but it's "negative space", not positive. Expo saw FM isn't very interesting. Expo triangle core FM is extremely interesting.. |
Is this an observation you made, or do you have some reasoning ... I just reread you starting message, and I can't think of a "why" and this makes me curious ... I mean, FM on a saw may be a bit wild, but when the saw is converted to a triangle ... hmmm maybe it's not so linear and the order of operations makes a difference?
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Jan
also .. could someone please turn down the thermostat a bit.
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Peake
Joined: Jun 29, 2007
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Location: Loss Angeles
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| Posted: Thu May 22, 2008 4:07 pm Post subject:
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Listen to my example and then tell us which oscillators will do that. Plan B aside, which is in the ballpark... I know that I'm nearly alone regarding such concerns, so please bear with me. If I get my answers, I'll go off and work  |
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v-un-v
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| Posted: Thu May 22, 2008 4:17 pm Post subject:
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Personally I'd also like to hear what the TH oscillator sounds like with a spot of linear FM too 
Scott?
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ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN. |
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blue hell
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| Posted: Thu May 22, 2008 4:22 pm Post subject:
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| Peake wrote: | | Listen to my example and then tell us which oscillators will do that. |
I did, and I liked it, but I don't know 
I'm trying to make some models, but that ain't helping a bit yet ... the tri core emulation runs twice as slow as the saw core, so that's good, but all modulations fail so far, less good 
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Jan
also .. could someone please turn down the thermostat a bit.
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frijitz
Joined: May 04, 2007
Posts: 1734
Location: NM USA
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| Posted: Thu May 22, 2008 5:14 pm Post subject:
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| Blue Hell wrote: | | Is there a connection between tri core / saw core and lin / exp FM? |
No, absolutely not. The FM is implemented in the expo/current source and it makes no difference what the core design is. (Very confusing thread, this.)
Ian |
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Peake
Joined: Jun 29, 2007
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| Posted: Thu May 22, 2008 5:20 pm Post subject:
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| I just ignore the tangents and will eventually get the answers. |
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Peake
Joined: Jun 29, 2007
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| Posted: Fri May 23, 2008 10:36 am Post subject:
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| Suddenly no interest in exponential triangle-core FM? I'll just go and investigate the options I'd already sourced prior to initially posting. Thanks! |
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frijitz
Joined: May 04, 2007
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| Posted: Fri May 23, 2008 11:10 am Post subject:
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| Peake wrote: | | Suddenly no interest in exponential triangle-core FM? I'll just go and investigate the options I'd already sourced prior to initially posting. Thanks! |
Again, it's quite difficult to follow your posts. I really like your demo, but without knowing what patches and settings you used it would be quite difficult to try to reproduce your results.
Ian |
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Peake
Joined: Jun 29, 2007
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| Posted: Fri May 23, 2008 11:40 am Post subject:
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I've described everything, so don't worry.
Everyone enjoying the rising price of gas and everything dependent upon oil and gas? |
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mono-poly
Joined: Jul 07, 2004
Posts: 937
Location: Rotterdam, Netherlands
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| Posted: Fri May 23, 2008 12:47 pm Post subject:
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I was picking up some stuff today at my technican.
And he said that the biggest problem was to keep the vco in tune at high exp fm input. |
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v-un-v
Janitor
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| Posted: Fri May 23, 2008 12:56 pm Post subject:
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| frijitz wrote: | | Blue Hell wrote: | | Is there a connection between tri core / saw core and lin / exp FM? |
No, absolutely not. The FM is implemented in the expo/current source and it makes no difference what the core design is. (Very confusing thread, this.)
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Thinking about it, I would tend to agree more with Ian now. The sample on Scott's site imo, is more representative of the Mankato filter than the oscillator I would imagine. Because at the part where the filter 'opens up', the oscillator, well just sounds like any old oscillator.
It's that filter that sounds so lush 
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ACHTUNG!
ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN. |
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Peake
Joined: Jun 29, 2007
Posts: 1113
Location: Loss Angeles
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| Posted: Fri May 23, 2008 1:34 pm Post subject:
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"Everyone enjoying the rising price of gas and everything dependent upon oil and gas? "
I know that I won't get a straight answer to this question either- yet it remains. All bullshit contributes to the overall state. I wonder when people might finally get that, and understand their contribution, to their own situation? I'm willing to wait and see. |
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usw
Joined: Mar 22, 2007
Posts: 27
Location: valence france
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| Posted: Sat May 24, 2008 6:08 am Post subject:
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hello,
I'm not sure I understand what this thread really is about, since I don't get this triangle/saw core distinction...
I'm no electronic engineer either, but I've read that only triangle core vco's can go "thru zero" (?)
Assuming this may be the only difference between those two designs (subsequent waveshapers, accuracy/stability issues...let aside), the capability for an oscillator to reverse its phase when given a negative frequency (which is all that "thru zero" means, 0hz "freezes" the oscillator, inducing a dc offset that depends on its current phase and waveform), would obviously apply both to the so-called "exponential" and the linear fm input (even if the resulting spectrum is different).
Is this what you mean peake ? thru-zero exp-fm ?
edit : negative frequencies are of course impossible with exponential frequency modulation, +0 is the limit...
Last edited by usw on Thu Nov 05, 2009 4:13 pm; edited 1 time in total |
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ryktnk
Joined: Apr 24, 2008
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Location: london
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bryan
Joined: May 28, 2008
Posts: 8
Location: some furniture
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| Posted: Wed Jun 25, 2008 12:00 am Post subject:
Re: FM with triangle-core VCOs |
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| Peake wrote: | | The Plan B's FM index isn't as deep, but could probably easily be modified. |
(sorry I'm a noob..) Would this be as simple as decreasing the resistance on the FM input?
I've done a couple simple mods to the Plan B VCO and something like getting more depth out of the exp. FM definitely floats my boat. It doesn't go far enough.
Nice track(s) Peake, BTW. |
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