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!!!)
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)
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)
Posted: Thu Apr 09, 2009 8:41 am Post subject:
Re: Variable Slope Filter / Phaser Subject description: Interested?
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)
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)
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)
From Triangle to Sine to Square to Random. (Last stage, audio rate self-modulation, not shown.)
Filesize:
7.91 MB
Viewed:
1675 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)
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!)
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)
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)
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):
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.)
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)
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)
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)
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)
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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