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About Me

Found 2 results

  1. A nice expewriment from today was an idea coming from discussions with Jeff about applying cardboard tubes as bandpass resonators for human speech. It was a very simple setup. I took a piece of cardboard tube, put in a buzzer into one end (working on a steady frequency), covered this end with one hand and with the other hand I opened and closed the upper end of the tube in a random manner. Basically the results are promising ic combined with random excitation of the buzzer. Unbenannt 6.mp4
  2. I did another interesting experiment today. I used my Spica chaos electronic circuit and attached an electric buzzer to it. A buzzer mainly behaves like the oscillating relay in my VISPRE device. By tuning the chaos pattern and the current through the buzzer I could make it emitt snaring sounds with speech rhythms. VID_20211127_180322.mp4 I could record and export some fairly good voices. Geh an Weihnachten.mp3 Geh danach in weisse Nacht.mp3 In Reichstag gehen.mp3 Videos.mp3 The setup is not the prototype of a working device, I see it more as a research project where I learned something from. The buzzer is a mechanical device that is able to self oscillate because of positive feedback. If you excite it with random patterns mimicking speech in a way that self oscillation is short before to start, the tiniest energy fluctuation will kick in self oscillation with an exponentially rising signal ramp. In case of the buzzer it starts to snare. It's this fragile state where pk modulation may control this transitional point of operation. The second thing is an acoustical bandpass forming formants from the impulses. The voices I posted here still are sub optimum in terms of spectral composition. I am thinking of a set of tubes with different lengths and volumes resonating on the base frequencies of the human pharynx.
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