$2 for 10 PCBs & 24 Hour Production: https://jlcpcb.com
ETI Vocoder constructional project reproduced with kind permission of Wimborne Publishing Ltd. http://www.epemag.com
https://www.patreon.com/julian256
The vocoder contains a digital white noise generator whose 40kHz clock is very susceptible to external interference. Altering the taps of the linear feedback shift register produces some very interesting sounds.
https://ece.umd.edu/class/enee245.S2015/Lab3/CD4030.pdf
http://www.sycelectronica.com.ar/semiconductores/CD4006.pdf

By Julian

Youtuber, shed dweller, solar charge controller aficionado

15 thoughts on “Electronic digital white noise circuit – vocoder”
  1. Avataaar/Circle Created with python_avatars emcosta says:

    Julian said “… to a speaker!!!” – I rushed to lower the volume of my headphones before he finishes the sentence…

  2. Avataaar/Circle Created with python_avatars Boxritter says:

    How to make it without an annoying ic ?

  3. Avataaar/Circle Created with python_avatars Noel Herron says:

    What strikes me is how similar this pseudo random noise sounds to my 56k modem from back in the day. To my years, encoded data is indistinguishable from random data.

  4. Avataaar/Circle Created with python_avatars Richard Smith says:

    Wife: WHAT IS THAT GOD AWFUL RACKET JULIAN?!

  5. Avataaar/Circle Created with python_avatars Nothing\ says:

    I made somethig just like this. It was inspired by your ther videos on LFSRs.

  6. Avataaar/Circle Created with python_avatars And Chips says:

    Julian's new business, Guitar peddle effects, just don't tell FranTone !!!

  7. Avataaar/Circle Created with python_avatars Daniel Taon says:

    com trought finger

  8. Avataaar/Circle Created with python_avatars Mike Meakin says:

    MM5437 Noise Generator perhaps ?

  9. Avataaar/Circle Created with python_avatars Shreyas Kulkarni says:

    Hassler circuit?

  10. Avataaar/Circle Created with python_avatars Graytail says:

    So, what you've essentially done, is build a kind of randomised theramin?
    I'd really like to hear what it'd sound like if you fed actual audio into this thing at some point

  11. Avataaar/Circle Created with python_avatars Lizardo Foz says:

    This is more like Joulie Baby. No more taking the chuck off of drills please.
    How about one on the crappy 340 chip that infests so many arduino knockoffs
    and cost so many hours of human life wasted fighting com port sickness on
    windows?

  12. Avataaar/Circle Created with python_avatars Party Pillz says:

    Sounds like the background noise when I got my first cheapass mp3 player

  13. Avataaar/Circle Created with python_avatars John Heuft III says:

    I had to stop the video that cacophony was intolerable..

  14. Avataaar/Circle Created with python_avatars Network XIII says:

    Digital Theremin

  15. Avataaar/Circle Created with python_avatars 5Rounds Rapid says:

    Sounds like Kraftwerk.

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