Administrators Andres Ramos Posted August 8, 2021 Administrators Share Posted August 8, 2021 This experiment was more of a joke but I also wanted to see how randomly varying low frequency impulses would be shaped while going through a mechanical spring. This is part of my current work to investigate the transformation of sound by spirits. I found out that a spring adds reverb and a bandpass filtering to a signal going through it, much like the old reverb spirals for guitars back in the 70s. VID_20210808_1221391.mp4 As a source of impulses I used a self oscillating relay and connected a spring to the vibrating anchor. The other side of the spring was hooked into the mylar membrane of a cardboard tube. Depending on the amount of mechanical 'bias' tension the spring behaved very different. Also the mechanical tension it imposed on the relay made the whole arrangement very agile. With some tensions I got different standing waves in the spring I assume and I could make it emit strong or very low sound. After all the pk effect was minor compared to the roaring sound. In another recording I could isolate some voices at least perceivable without post processing but accompanied by strong sound. I don't think I could make an ITC device with satisfying results from this setup but at least it was interesting how sound can be shaped by only applying mechanical means. Bedanke.wav Dankeschön.wav Es geht.wav Hier ist nichts neues.wav 3 Quote Link to comment Share on other sites More sharing options...
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