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Thread

variable bandwidth VCF

2005-06-16 by cuari7

Holy Mother of Christ!!!!!!!!!!

Anyone else out there own one of these babies..?
This has got to be the most underrated filter (and best-kept secret, I
guess) on the STS catalogue!
All it takes is one measly oscillator fed into it, then get the lopass
and variable bw outs into a mixer (invert the vbw out signal for best
effects), and you get an incredible resonant peak. YEAOW!!!!!! An
effect somewhat like the spaced-out dual MM Voyager filter, but more
vocalish.

Guys! Go and get one of these with your next panel!

Rex, You da Man!!!!!!!!!!!!!!!!!!!!

Re: variable bandwidth VCF

2005-06-17 by paradigmshiftbeats

--- In SergeModular@yahoogroups.com, "cuari7" <medejd@t...> wrote:

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> This has got to be the most underrated filter (and best-kept secret,

I guess) on the STS catalogue!

I couldn't agree more. I recall several posts from years gone by in
which people complained about the "flat" response, but as you have
discovered, it's all in how you patch it!

My VCF2 has become close pals with my matrix mixer... try routing hi
and lo band outputs through the dual phasers and use some quadrature
oscillators to mod cutoff, bandwidth, and the phaser frequencies...

Enjoy!

Chris

Re: variable bandwidth VCF

2005-06-17 by John P

from serge-fans.com:

Variable Bandwidth Filter (VCF2)

Contributor Norman Fay says:

1. By mixing the hi-pass and lo-pass outputs together, a variable
width notch filter is created. By turning the bandwidth control, the
sound goes from a very faint fixed phaser type of effect to complete
filtering out of the sound, with upwards and downwards filter sweeps
clearly audible. If you are fading out a part during mixdown of a
piece, doing this instead of pulling down your mixer fader creates a
startling "how did they do that" type of effect.
2. Mixing the two fixed bandwidth outputs with the dry signal
creates a pair of resonant-ish peaks in the sound without
overwhelming it. Adjust both bandwidth and frequency controls to
taste. At certain points you will find that almost ANY signal source
takes on an eerie "vocal" quality, especially if you apply lots of
reverb.
3. Mixing the lo-pass output with variable amounts of the two fixed
bandwidth outs gives a response something like a cross between
phasing and filter resonance.

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>From the above, you'll probably conclude that a MIX2 module is an

essential add-on to the VCF2, and you'd be right. The sound of the
VCF2 is also very pleasing to the ear, and I'd strongly recommend
anyone to add one to their Serge setup.

paradigmshiftbeats wrote:

>>This has got to be the most underrated filter (and best-kept secret,
>>
>>
>I guess) on the STS catalogue!
>
>
>I couldn't agree more. I recall several posts from years gone by in
>which people complained about the "flat" response, but as you have
>discovered, it's all in how you patch it!
>
>My VCF2 has become close pals with my matrix mixer... try routing hi
>and lo band outputs through the dual phasers and use some quadrature
>oscillators to mod cutoff, bandwidth, and the phaser frequencies...
>
>Enjoy!
>
>Chris
>
>
>
>

--
m/n/m/l
surreal electronic music, sound, noise
http://www.mnmlnoise.com

Re: variable bandwidth VCF, part 2

2005-06-24 by cuari7

OK, so I happen to have a Matrix Mixer in my system, and Holy F*****g
Shit! the screaming resonance one can get by combining these two!!
You're very right, Chris, this is one great combination!!
God, I love this thing!!!!!

Re: variable bandwidth VCF

2005-06-27 by nicholas_kent

Just curious. Does it actually change topology or are signals tapped at different points and
crossfaded?

nick
http://technopop.info/ndkent/

Re: variable bandwidth VCF

2005-06-28 by paradigmshiftbeats

--- In SergeModular@yahoogroups.com, "nicholas_kent"
<nicholas_kent@y...> wrote:

Show quoted textHide quoted text

> Just curious. Does it actually change topology or are signals

tapped at different points and

> crossfaded?

Nick,

There are five responses available using two tap frequencies that
are jointly affected by both the frequency pot/voltage (respond in
same direction) and bandwidth pot/voltage (respond in opposite
directions). The high and low edges of this "variable bandwidth"
output each have their own fixed bandwidth outputs, as well as
respective high and low pass outputs. These outputs can then be
mixed/inverted/cross-faded externally in any combination.

I will remind everyone that Blake still has a panel for sale that
features this superb filter.

Chris

Re: variable bandwidth VCF

2005-06-28 by Blake Wilson

>
>
>I will remind everyone that Blake still has a panel for sale that
>features this superb filter.

yes, i do. thanks for the plug, chris!

blake

Re: variable bandwidth VCF

2005-06-28 by darkstr1746@comcast.net

just did a little VCF2 freaking this evening with a WAD and a couple of QUOs. Yum Yum

who needs a flanger/phaser/ring. This combo has it all.. plus, some of the grooviest resonant feedback your gonna hear and it won't overload your VCAs at the output or at the board. Too cool

kind regards

john duval

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-------------- Original message --------------
--- In SergeModular@yahoogroups.com, "nicholas_kent"
<nicholas_kent@y...> wrote:
> Just curious. Does it actually change topology or are signals
tapped at different points and
> crossfaded?

Nick,

There are five responses available using two tap frequencies that
are jointly affected by both the frequency pot/voltage (respond in
same direction) and bandwidth pot/voltage (respond in opposite
directions). The high and low edges of this "variable bandwidth"
output each have their own fixed bandwidth outputs, as well as
respective high and low pass outputs. These outputs can then be
mixed/inverted/cross-faded externally in any combination.

I will remind everyone that Blake still has a panel for sale that
features this superb filter.

Chris

Keep on Patchin'!