| interested? |
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88% |
[ 38 ] |
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[ 5 ] |
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| Total Votes : 43 |
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StephenGiles
Joined: Apr 17, 2006
Posts: 507
Location: England
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 Posted: Sun Mar 29, 2009 9:22 am Post subject:
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Ah, Victorian English - this is still spoken by the Anglo Argentines in Buenos Aires, especially in the English Club where I was forced to wear a tie for lunch in a temperature of 35C with 100% humidity!
That way of speaking is sasly a lost art here - ini' ma'e (isn't it!!!) |
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bugfight
Joined: Aug 02, 2007
Posts: 188
Location: Arlington, TX USA
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| Posted: Mon Mar 30, 2009 1:57 pm Post subject:
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hehe, we all know dick van dyke totally nailed that accent.
i have some george macdonald books, sadly my reading queue is even more embarrassing than my projects queue.
meanwhile, it looks like there is at least some interest in this project... |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Tue Mar 31, 2009 3:13 pm Post subject:
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Preview of PCB layout uploaded:
http://www.jhaible.de/varislope_filter_phaser/varislope_filter_phaser.html
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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zthee
Joined: Feb 20, 2008
Posts: 414
Location: Stockholm
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| Posted: Tue Mar 31, 2009 11:25 pm Post subject:
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| I capitulate! I really do need one! |
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numbertalk
Joined: May 05, 2008
Posts: 992
Location: Austin, TX
Audio files: 5
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| Posted: Wed Apr 01, 2009 6:24 am Post subject:
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| Looking good! |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Fri Apr 03, 2009 4:00 am Post subject:
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Update: PCB design finished. Gerber Data sent for making a prototype
Whcih means I should have the 1st prototype PCB in about 3 weeks.
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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TekniK
Joined: Aug 10, 2008
Posts: 1059
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Posted: Thu Apr 09, 2009 2:57 am Post subject:
Re: Variable Slope Filter / Phaser
Subject description: Interested? |
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| jhaible wrote: | 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.
JH. |
Juergen what do u mean with spread? Panning from individulal pole sets outputs in stereo field?
Will this filter have a voltage controled variable slope that way u just can morph from 6db mode till 36db? |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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Posted: Thu Apr 09, 2009 8:41 am Post subject:
Re: Variable Slope Filter / Phaser
Subject description: Interested? |
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| TekniK wrote: | | jhaible wrote: | 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.
JH. |
Juergen what do u mean with spread? Panning from individulal pole sets outputs in stereo field? |
No. Pole Spread.
Will this filter have a voltage controled variable slope that way u just can morph from 6db mode till 36db?[/quote]
Yes.
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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TekniK
Joined: Aug 10, 2008
Posts: 1059
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Posted: Thu Apr 09, 2009 9:09 am Post subject:
Re: Variable Slope Filter / Phaser
Subject description: Interested? |
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| jhaible wrote: | | TekniK wrote: | | jhaible wrote: | 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.
JH. |
Juergen what do u mean with spread? Panning from individulal pole sets outputs in stereo field? |
No. Pole Spread.
Will this filter have a voltage controled variable slope that way u just can morph from 6db mode till 36db? |
Yes.
JH.[/quote]
Great!
VC resonance also?
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Thu Apr 09, 2009 9:27 am Post subject:
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Manually controlled 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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TekniK
Joined: Aug 10, 2008
Posts: 1059
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| Posted: Thu Apr 09, 2009 10:47 pm Post subject:
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| jhaible wrote: | Manually controlled Resonance.
JH. |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Thu Apr 09, 2009 11:29 pm Post subject:
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| TekniK wrote: | | jhaible wrote: | Manually controlled Resonance.
JH. |
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If you don't want the on-board modulation section, I'll find a way to wire one of the unused LM13600's for a VC Resonance function. 
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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TekniK
Joined: Aug 10, 2008
Posts: 1059
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| Posted: Fri Apr 10, 2009 7:40 am Post subject:
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| jhaible wrote: | | TekniK wrote: | | jhaible wrote: | Manually controlled Resonance.
JH. |
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If you don't want the on-board modulation section, I'll find a way to wire one of the unused LM13600's for a VC Resonance function.
JH. |
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keithwin
Joined: Jul 20, 2007
Posts: 83
Location: uk
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| Posted: Thu Apr 16, 2009 3:12 pm Post subject:
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Put me down for two please Jurgen
cheers
Keith |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Mon Apr 20, 2009 2:00 pm Post subject:
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Testing the 1st prototype.
LFO waveshape morphing video attached.
JH.
| Description: |
| From Triangle to Sine to Square to Random. (Last stage, audio rate self-modulation, not shown.) |
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Download |
| Filename: |
LFO_morphing.mov |
| Filesize: |
7.91 MB |
| Downloaded: |
1298 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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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Mon Apr 20, 2009 2:43 pm Post subject:
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I made a rough (very rough) demo with my varislope phaser tonight.
It's done with alligator clips all ove rthe board instead of proper panel wiring, but I got some unusual sounds out of it, I think.
Not very typical for a phaser:
http://www.jhaible.de/varislope_filter_phaser/varislope_unusual.mp3
(First few seconds: Unprocessed input signal. Then all kinds of modulation, mostly sample and hold and self-modulation, high resonance. Towards the end of the clip, input signal is removed, and phaser runs on the edge of self-oscillation. Don't turn it up too loud - danger for your ears and speakers! Everything is modulated with the on-board LFO only!)
The on-board LFO has the capability to morph between waveforms. This is demonstrated in this short video clip:
http://electro-music.com/forum/phpbb-files/lfo_morphing_150.mov
Project description and older (more musical) audio demos here:
http://www.jhaible.de/varislope_filter_phaser/varislope_filter_phaser.html
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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TekniK
Joined: Aug 10, 2008
Posts: 1059
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| Posted: Thu Apr 23, 2009 1:50 pm Post subject:
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| Very nice!,could u made a mp3 where we can very well hear the slope variation wth cv? |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Thu Apr 23, 2009 2:34 pm Post subject:
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| TekniK wrote: | | Very nice!,could u made a mp3 where we can very well hear the slope variation wth cv? |
I will, later.
I've ordered an enclosure and I'll make a front panel, and then will make some proper demos.
But Living VCOs PCBs arrived today, so building another prototype from one of these, and then shipping these boards, has highest priority now.
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: Wed Apr 29, 2009 4:08 am Post subject:
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Variable Slope Filter/Phaser: Building a Prototype
Well, the first prototype was part of my JH-3 Modular, of course.
But for testing the PCB layout and fine-tuning the circuit for which I intent to offer PCBs, I wanted to build a standalone effect. For this, I'm using the same tabletop enclosure that I've used for my Wasp Filter Clone some years ago. (Pultgehäuse from Conrad Electronic, Best. Nr. 520772 - Manufacturer is APW)
The focus is on the on-board LFO modulation, so you won't find any potentiometers for external CVs on this front panel. (The circuit allows a lot of external CVs, of course.)
Here's a screenshot of the panel in Frontplattendesigner (Schaeffer):
http://www.jhaible.de/varislope_filter_phaser/varislope_proto_fpd.jpg
Input Level - Audio signal input level control
Feedback - Resonance Loop. Can burst into self-oscillation. Inverted or non-inverted feedback for unusual effects.
Mix - Wet / Dry mix of filtered and unfiltered signal. Inverted or non-inverted mix. Mandatory for phasing; interesting for LPF mode because of phase cancellation effects.
Ouput Level - Output attenuator for audio signal
APF / LPF - Switches to change the function of the 6 filter stages from All Pass Filter (Pole/Zero pairs) to Low Pass Filter (Poles only). 3 Switches for 3 pairs. (6 individual switches would be possible as well.)
Mix / Filter - In "Filter" position the "Mix" potentiometer is disconnected for 100% filter signal without any crosstalk from the dry signal (important for powefull 36dB/Oct LPF effect).
Clean / Dirty - Dirty applies some dynamic load to the single-ended buffer of the last filter stage.
Active / Bypass - True hard bypass
Slope - Spreads the pole frequencies of the individual stages. This means less filter steepness in LPF mode (ccw end is 36dB/Oct), and wider notch spacing in Phaser (APF) mode.
LFO Amount - Modulation amount of on-board LFO
LFO Wave - Crossfade between LFO waveshapes: Tringle -> Sine -> Square -> Sample&Hold -> Audio-Rate Self-Modulation (see video).
Also possible, but not on Front panel:
Slope Control Voltage Input
LFO Amount Control Voltage Input
LFO Waveshape Control Voltage Input
LFO Rate Control Voltage Input
External Filter or Phase Control Voltage Input (for ADSR etc.)
External 1V/Oct Control Voltage Input (no tempco, though.)
Project page with audio samples:
http://www.jhaible.de/varislope_filter_phaser/varislope_filter_phaser.html
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: Fri May 01, 2009 7:19 am Post subject:
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(Preliminary) Schematics published
The 36dB/Oct LPF / Phaser:
http://www.jhaible.de/varislope_filter_phaser/varislope_filter_phaser_sch1.pdf
The LFO with crossfaded Waveforms, S&H and Audio Rate Modulation:
http://www.jhaible.de/varislope_filter_phaser/varislope_filter_phaser_sch2.pdf
Project Page:
http://www.jhaible.de/varislope_filter_phaser/varislope_filter_phaser.html
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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StephenGiles
Joined: Apr 17, 2006
Posts: 507
Location: England
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| Posted: Sat May 02, 2009 4:17 am Post subject:
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Where is everyone?
This looks amazing Jürgen, do you have a sample using a long chord so I can have an idea how it would sound on with guitar?
Thanks
Stephen |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Sat May 02, 2009 4:53 am Post subject:
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| StephenGiles wrote: | Where is everyone?
This looks amazing Jürgen, do you have a sample using a long chord so I can have an idea how it would sound on with guitar?
Thanks
Stephen |
I'll make more samples when I have the prototype finished with front panel and all. No fun making demos with alligator clips everywhere ...
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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shawn
Joined: Dec 13, 2005
Posts: 209
Location: savannah
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| Posted: Thu May 07, 2009 6:12 am Post subject:
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| Looks amazing. Can't wait for it to be available, certainly want 1 of them. |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Fri May 08, 2009 8:40 am Post subject:
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Received front panel from Schaeffer today.
No time for building the prototype, though. Tax work all day ... 
But I made a photo, and I think it fits elegantly into that OKW enclosure:
http://www.jhaible.de/varislope_filter_phaser/building_prototype_1.jpg
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: Sat May 09, 2009 1:31 am Post subject:
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And another picture:
http://www.jhaible.de/varislope_filter_phaser/building_prototype_2.jpg
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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