Weird Fuzz "Doubling" Effect

[soulsonic]

I've been working on a fuzz pedal and I've come across an odd anomaly; with maximum fuzz  it would get this strange "Doubling" effect when I'd palm mute a string a pick it hard. It sounds almost like this tiny slapback delay at the attack of the note and then it would be a chorus/doubler effect as the note is held out. It's almost like the signal somehow got duplicated. Very strange.
The circuit is one of my own - my Shizzle fuzz. The closest equivalent I can think of is a Colorsound Tone Bender.
Anyone ever experience this sort of thing?

[axg20202]

Well, my Tonebender clone does something similar in certain registers, almost like an octave effect but more subtle, like it's just adding some subtle harmonics here and there to give a very slightly chorussy sound. Could be what you're describing I guess, but difficult to say without a clip

[brett]

Hi
with assymetric clipping (fuzzface, axis fuzz, ds-1, others) there's always some octave added.
In the case of germanium fuzzfaces, the onset is nicely progressive. In cases like the Mosrite, the harmonics are so heavy and complex that it becomes somewhat un-musical.
cheers

[soulsonic]

It's germanium.
I understand the octave effect... I hear that on alot of different fuzzes and even some speakers that get alot of "cone cry" - but what's strange about this is that it sounds like it's been delayed and it doesn't sound strictly like an octave - there seems to be alot of fundamental in it. And by "delayed", I don't mean it swells in as the note sustains, I mean it's like a slapback where a duplicate signal jumps in a split second after the attack. It's incredibly strange. It's probably just unpredictable artifacts from the bias being a little off or whatever... it's a really high gain circuit so that sort of thing tends to happen. I was able to pretty much tweak it out by adding a 1K resistor to the Emitter of the 2nd transistor (what would be Q1 in a normal fuzz face) - this cut the gain enough to tame the distortion a bit and make it less rude. Overall, the thing sounds great, but it's just that one strange setting that had me scratching my head.

[trevize]

looks like the parallel universe effect. it seems like fuzzed a slapback delay that I've heard also on other fuzzes.

[Pedal love]

Its an anomaly. Sometimes when you put two germanium fuzz faces in series and turn them up, you get a very synth sound. If you play with changing the bias on one or both, you get a sound like an envelope filter. Its just playing with the waveform that does this. A highly clipped square wave can make some strange sounds.

[soulsonic]

Yes very square wave and synth-y. I've been able to put my finger on the sound... it's like a square wave with a PWM on it.