Author Topic: deluxe pitch pirate with synth  (Read 2278 times)

somnif

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Re: deluxe pitch pirate with synth
« Reply #15 on: March 18, 2018, 03:39:27 AM »
True for the Clarinot, not the Pitch Pirate, which has an lfo

I'd still advise you to put the limiter led I was talking about (diffused green led from pin7 of the chip to ground) to avoid distortion.

Addy Bart > I think with the limiter led, if you still hear distortion, it must come from the opamp, not the chip.

Huh, looking at the layouts it looks like the LDR is still on pin 6 of the pt2399, same as in the clari-not.

Addy Bart

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Re: deluxe pitch pirate with synth
« Reply #16 on: March 18, 2018, 04:02:51 AM »
Ah yes, could be clipping the 386, Boba7, thatís quite likely now you mention it.


Addy Bart

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Re: deluxe pitch pirate with synth
« Reply #17 on: March 18, 2018, 04:10:10 AM »
True for the Clarinot, not the Pitch Pirate, which has an lfo

I'd still advise you to put the limiter led I was talking about (diffused green led from pin7 of the chip to ground) to avoid distortion.

Addy Bart > I think with the limiter led, if you still hear distortion, it must come from the opamp, not the chip.

Huh, looking at the layouts it looks like the LDR is still on pin 6 of the pt2399, same as in the clari-not.

Thatís correct. Itís just the LED pulses on the pitch pirate, rather than respond to your playing dynamics.

somnif

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Re: deluxe pitch pirate with synth
« Reply #18 on: March 18, 2018, 04:14:59 AM »
Thatís correct. Itís just the LED pulses on the pitch pirate, rather than respond to your playing dynamics.


Ahhh, I see. I saw the 386 on the input and my brain assumed it was running the LED like in the clari'.  Wish I could find a schematic for the thing rather than just layouts  :P

Boba7

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Re: deluxe pitch pirate with synth
« Reply #19 on: March 18, 2018, 04:28:20 AM »
Poor resolution and drawing but that's all I have! :)

Boba7

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Re: deluxe pitch pirate with synth
« Reply #20 on: March 18, 2018, 06:36:53 AM »
Actually maybe I shouldnt post those schematics, so if you guys wanna save them, let me know and then Iíll delete the pics. :)

Beedoola

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Re: deluxe pitch pirate with synth
« Reply #21 on: April 12, 2018, 09:53:33 AM »
Not to derail the thread but I built a Pitch Witch and the speed range isnít the same as the real PPD. The slowest speed isnít nearly as slow as the PPD and at max speed there is some wining sound.

The layouts online I saw suggested a Vactrol but maybe I should use an LED/LDR combo.