ROB WARMOWSKI: Hey everybody. Welcome back to Gearwire.Com series of tutorials/sceencasts. We are now taking a look again at the Audiomulch application, and we are going to explore a patch that comes with the program called HarpoonFeedback. This patch is going to teach us a little something about the Test Generator contraption in Audiomulch and also about the principles and properties of feedback. This is a simple patch, and it's the kind of a sort of small noise and sound construction kit that Audiomulch is so great at throwing together.

What we have in front of us is a single path that begins with a Test Generator Audiomulch contraption. This is a little box that spits out either a sine wave of a specific frequency that you can type in here, or it will send white noise. And both of those outputs are happy inputs for this Flanger Device. The Flanger Device operates like a classic flanger might with a range slider. It's a dual slider actually. If you click down on it, you see that its low range is 69 Hz -- Excuse me, its low range is 20 Hz and its high range is 72, and you can move that around.

I believe we're going to be leaving rate and feedback alone and wet and dry alone because what we're doing is we're making our own feedback by cranking the signal that comes out of the flanger into a gain pot, and then sending that gain pot back into the front of the flanger and into the input of the flanger, and then we also sent the output of this into two more gain stages and then into sound out.

So, let's turn on the patch and see what we get here.

[ROB WARMOWSKI TURNS ON PATCH]

that's pretty sci-fi stuff. Now, if we alter the range of the flanger, the noise signal that comes out of the Test Generator is altered and detuned at new ranges of its frequency. Now, once we get too far away from the 440 cutoff, there's not a lot of places to go. What we can do is we can putting out noise to putting out a sine wave and then play with the gain structure. The gain that -- Right now, this gain device is opened into 100% and it's being sent back into the top of the flanger. If we alter the second gain, that is to say -- Now let's not look at the downstream ones. Let's instead -- Let's concentrate on actually changing the tone of the input to the circuit...,

[ROB WARMOWSKI MAKING SOME CHANGES ON THE PATCH]

...and you can hear it commence here with rising the sine frequency. You get a difference in tone as we increase the volume.

[ROB WARMOWSKI MAKING SOME CHANGES ON THE PATCH]

Now, narrowing the range of the flanging can also produce interesting artifacts.

[ROB WARMOWSKI MAKING SOME CHANGES ON THE PATCH]

Returning to noise will give us a more broadband thicker result.

[ROB WARMOWSKI MAKING SOME CHANGES ON THE PATCH]

If you put every little artifact that we caught on the way in, you can sharp a relief.

[ROB WARMOWSKI MAKING SOME CHANGES ON THE PATCH]

Well, that just barely scratched the surface of what you can do with various elemental components inside the Audiomulch application. Keep your eyes on Gearwire for more videos in the future. Thanks for watching.