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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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 Posted: Sun Mar 15, 2009 11:30 am Post subject:
Variable Slope Filter / Phaser
Subject description: Interested? |
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A mean little module from my JH-3 Modular.
6 filter poles, realzed with OTAs and combined FET / Bipolar buffer stages.
Variable Slope function for 6-pole VC LPF.
Voltage controlled Pole Spread for Phaser mode.
Zeroes switcahbel in pairs, i.e. a lot of combinations of all pass and low pass stages. Positive and negative feedback. Positive and negative wet/dry mix. Rather special overdrive behaviour (Dirty!), and (IMO) pleasant way of breaking into oscillation.
JH.
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_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Sun Mar 15, 2009 11:53 am Post subject:
Demo |
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Arpeggio from OB-8, with delay and reverb.
First few seconds dry - then playing with phaser.
JH.
| Description: |
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Download |
| Filename: |
variable_slope_phaser_arpegg.mp3 |
| Filesize: |
13.75 MB |
| Downloaded: |
5930 Time(s) |
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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b-funk
Joined: Jul 17, 2007
Posts: 194
Location: Berlin
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| Posted: Sun Mar 15, 2009 1:09 pm Post subject:
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Jürgen!
You are crazy!!! This sounds fantastic (and also reminds me that I still have a broken OB-8 standing around collecting dust  )...
Go for it.
Best wishes,
Tobias. |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Sun Mar 15, 2009 2:18 pm Post subject:
another demo |
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This is something I recorded a few years ago. I don't remember all the details. But it was a Split on the OB-8, bass sound on left hand and organ sound on right hand, and the whole thing was processed with the Variable Slope Phaser / Filter to get that "pulsating" sound.
(Lots of delay and reverb as well, obviously.)
JH.
| Description: |
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Download |
| Filename: |
oct_06_zwischenstand_edit.mp3 |
| Filesize: |
8.94 MB |
| Downloaded: |
3815 Time(s) |
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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Luka
Joined: Jun 29, 2007
Posts: 1003
Location: Melb.
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Funky40
Joined: Sep 24, 2005
Posts: 875
Location: Swiss
Audio files: 1
G2 patch files: 5
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| Posted: Mon Mar 16, 2009 8:04 am Post subject:
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The Demo sounds very good, but to be honest:
filters and phasers are the least i need for now,
and i might be not the only one.
what i like to see first:
__ very good VC ADSR
__ BBD
__ Vocoder
the accent is on the term "first". |
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mono-poly
Joined: Jul 07, 2004
Posts: 937
Location: Rotterdam, Netherlands
Audio files: 2
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| Posted: Mon Mar 16, 2009 12:19 pm Post subject:
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| I wanna join. |
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krisp14u
Joined: Nov 11, 2006
Posts: 206
Location: uk
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| Posted: Mon Mar 16, 2009 1:14 pm Post subject:
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Hook line and sinker I will be taking 2 me thinks 
_________________
Cheers
Paul Darlow
www.krisp1.com |
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norman phay
Joined: Jun 29, 2007
Posts: 176
Location: North-East England
Audio files: 1
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| Posted: Mon Mar 16, 2009 1:17 pm Post subject:
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| Wow, that sounds great. I emailed you to put me down for 2 boards, thanks. |
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vtl5c3
Joined: Sep 08, 2006
Posts: 425
Location: PDX
Audio files: 13
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| Posted: Mon Mar 16, 2009 2:37 pm Post subject:
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Sounds good Juergen! Is this related to the variable slope VCF in Electronotes? IIRC, that one was also 6 poles, but it did not have feedback.
Romeo |
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numbertalk
Joined: May 05, 2008
Posts: 992
Location: Austin, TX
Audio files: 5
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| Posted: Mon Mar 16, 2009 3:03 pm Post subject:
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| I'd be in for a board! |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Mon Mar 16, 2009 11:42 pm Post subject:
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| vtl5c3 wrote: | Sounds good Juergen! Is this related to the variable slope VCF in Electronotes? IIRC, that one was also 6 poles, but it did not have feedback.
Romeo |
It's a combination of two ideas I found in EN.
One was a variable slope VCF, the other was a combination of LPF and Phaser. (But this has been so long ago, I don't remember the details.)
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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Sound
Joined: Jun 06, 2006
Posts: 842
Audio files: 1
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| Posted: Tue Mar 17, 2009 1:50 am Post subject:
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| Intrerested in one or two. |
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pdub
Joined: Jun 08, 2007
Posts: 14
Location: california
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| Posted: Wed Mar 18, 2009 12:37 pm Post subject:
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Very cool! I am in for one or two.
Thanks, Charles. |
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Electronicant
Joined: Feb 23, 2006
Posts: 81
Location: North
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| Posted: Wed Mar 18, 2009 2:10 pm Post subject:
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Awesome sound.
But is yet another phaser, so why not use either the Tau phaser or the Schulte phaser as the phaser part in this project?  |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Wed Mar 18, 2009 2:15 pm Post subject:
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| Electronicant wrote: | Awesome sound.
But is yet another phaser, so why not use either the Tau phaser or the Schulte phaser as the phaser part in this project? |
Totally different architecture.
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Sun Mar 22, 2009 3:41 pm Post subject:
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This one is fun to layout!
Finished the audio part.
Lots of space left on the board.
I will include a Noise + Sample & Hold Circuit, so you get these clocked random modulations without any outboard modules. Also, an on-board power supply, so this can become a stmp box as well as a modular synth module.
JH.
Now playing: Kitaro, Silk Road
| Description: |
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| Filesize: |
85.86 KB |
| Viewed: |
50991 Time(s) |
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_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Sat Mar 28, 2009 5:12 am Post subject:
More Features! |
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Just wanted to tell you my further plans for this.
The Variable Slope Filter / Phaser will get a very special on-board LFO that is derived from my JH-4 synthesizer.
Voltage controlled Rate and Depth, of course.
But there is is more:
You will be able to crossfade between waveforms with a potentiometer, or with another control voltage.
Starting from ccw end, the waveforms will be:
Triangle, fading into Sine, fading into Square, fading into Sample&Hold, fading into audio rate self-modulation.
Let me explain that choice:
Triangle fading into Sine means rounding the edges.
Square fading into S&H means rhythmic modulation with more or less randmness thrown in.
S&H fading into audio self modulation means mixing and fading two different flavors of madness. Especially with high resonance.
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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Funky40
Joined: Sep 24, 2005
Posts: 875
Location: Swiss
Audio files: 1
G2 patch files: 5
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| Posted: Sat Mar 28, 2009 5:33 am Post subject:
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sounds very good,
please incloude a LFO Out too !!
Your LFOs are anyway great, but this one seems to be very special |
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TekniK
Joined: Aug 10, 2008
Posts: 1059
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| Posted: Sat Mar 28, 2009 7:28 am Post subject:
Re: More Features! |
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| jhaible wrote: | Just wanted to tell you my further plans for this.
Voltage controlled Rate and Depth, of course.
You will be able to crossfade between waveforms with a potentiometer, or with another control voltage.
JH. |
sexy |
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numbertalk
Joined: May 05, 2008
Posts: 992
Location: Austin, TX
Audio files: 5
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| Posted: Sat Mar 28, 2009 8:12 am Post subject:
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| Keeps sounding better and better! |
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vtl5c3
Joined: Sep 08, 2006
Posts: 425
Location: PDX
Audio files: 13
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| Posted: Sat Mar 28, 2009 8:24 am Post subject:
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| That's great news about the LFO. Are you using some sort of interpolating scanner for the waveform xfading? |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Sat Mar 28, 2009 8:31 am Post subject:
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| vtl5c3 wrote: | | That's great news about the LFO. Are you using some sort of interpolating scanner for the waveform xfading? |
Yes. But yet another variant that allows different height, width and slope for each window, and uses only 2 transustors plus an OTA per channel.
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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bugfight
Joined: Aug 02, 2007
Posts: 188
Location: Arlington, TX USA
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| Posted: Sat Mar 28, 2009 9:07 am Post subject:
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sheesh, you're too productive lately, i can't keep up!
2 for my infinite queue...
dig the c.s. lewis quotes, btw. one of my fave writers since i was a kid... |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Sun Mar 29, 2009 3:39 am Post subject:
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| bugfight wrote: |
dig the c.s. lewis quotes, btw. one of my fave writers since i was a kid... |
I read about every book of his adult fiction and his theological work, in my twenties. Now I re-discoverd him, currently reading his collected correspondence. And I finally started reading his spiritual teacher, George MacDonald. Very heavy stuff, in beautiful Victorian English, challenging and comforting at the same time.
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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