[fruityloops] Re: Wah-Wah in FL

  • From: Tim Jenkins <TimJ@xxxxxxxxxxxx>
  • To: "'fruityloops@xxxxxxxxxxxxx'" <fruityloops@xxxxxxxxxxxxx>
  • Date: Wed, 29 Jan 2003 11:04:32 -0000


You were in fact correct the first time with regards to filtering instead of
boosting. The reason behind this is that any kind of boosting requires an
amplifier (be it soft or hardware) in fact amplifiers are broad band devices
and it is the filtering which then allows for a narrow band peak, or boost
if you like :). 

What I am trying to say is that you can't produce a narrow band sweep
without filtering. But you can without amplification (or boosting)

Sorry if I sound picky but I am a RF filter design engineer by trade :)   

-----Original Message-----
From: Stuart Fryett [mailto:Stuart.Fryett@xxxxxxxxxxxxxxxx] 
Sent: 29 January 2003 10:50
To: fruityloops@xxxxxxxxxxxxx
Subject: [fruityloops] Re: Wah-Wah in FL

Hi there,
Right, not sure if I can do this coherently!  Basically, a wah wah filters
particular frequencies of an audio signal...
To manually simulate this, load a parametric eq into fruity's fx rack, and
pick the first band.
Set the band type to "peaking", ramp up the level to maximum - you should
see a hump appear on the left of the graph.
Now, to make this "narrow band", go to band width (sometimes referred to as
"Q") (the bottom knobs) and turn it clockwise until the hint bar says about
70&.  The hump should turn into a spike.
To "sweep" this "narrow band" boost (rather than a filter in my original
post, I was using the filter fx to achieve a similar result) across the
frequency spectrum, play with the band freq (the larger knob) and listen to
the effect it has.  It's not a "true" wah because they tend to cut the
frequencies that aren't being boosted.

Sorry, that seems a bit of a clumsy explanation but it will show you
graphically what a wah does (at least as I understand it).

As far as the link between the peak controller and the filter goes...
The peak controller (as we set it up) monitors the "loudness" of a channel.
All you're then doing is using this loudness to remote control (via the
"link to internal controller" dialog) the cutoff frequency on the filter,
i.e., the louder the channel, the higher the cutoff frequncy...  if you look
in the tutorial loops for "peak controller (basics)", you'll see it in
action there - I inadvertently stole this idea (I honestly didn't know it
was there until afterwards!) in making this solution!

The wah on amplitube is very good indeed!


-----Original Message-----
From: fruityloops-bounce@xxxxxxxxxxxxx
[mailto:fruityloops-bounce@xxxxxxxxxxxxx]On Behalf Of
Sent: 29 January 2003 09:28
To: fruityloops@xxxxxxxxxxxxx
Subject: [fruityloops] Re: Wah-Wah in FL

"A wah is merely a narrow-band sweepable filter - just tried a little
experiment that seems to work to produce an auto-wah effect based on the
level of the instrument...

1. I set up the plucked! instrument on a channel, and set fx track to track
2. In the fx, insert the fruity peak controller and the fruity filter
3.  In the peak controller, set the peak knobs to base: 0%, peak: 90%, peak
tension: 67% (adj to taste), decay: 9 o'clock position. Leave the LFO
4. In the fruity filter, right click cutoff freq and assign to Peak control
(master) - Peak
5. Ramp up the filter resonance to max and adjust it to taste later.

Now, as you play the plucked! intrument, watch the cutoff freq and peak
in time.  There's your autowah!

Hi Stuart

As promised here's my reply about this.

I've followed your sugestion and it works OK but didn't explore it very
much 'cause I've downloaded a demo of Amplitube VST. Probably you do know
Anyway, your procedure its very interesting 'cause it allows me to
understand a little bit more about Fruity Peak and Fruity Filter. I still
dont understand the relation between both but I think this is due to a
knowlege lack from myself about the wah-wah effect.

"A wah is merely a narrow-band sweepable filter."

Please, could you explain this better or point some specific tutorial about



Rui Barata
Parts Quality

Tel. +351 241 899 800  -  Fax. +351 241 899 872
E-mail: rui.barata@xxxxxxxxxxxxxxxxxxxx

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