I hear it hurts. From: Adam Moffett Sent: Thursday, April 2, 2020 2:33 PM To: af@af.afmug.com Subject: Re: [AFMUG] OT Project update
Yeah....miniature thunder. On 4/2/2020 4:04 PM, Ken Hohhof wrote: I vaguely remember something from about 30 years ago, where they were using focused ultrasound to break up kidney stones. It looks like the technical term is focused ultrasound lithotripsy. My recollection is they used a high voltage spark for the sound source. High voltage spark sounds like it would be in your wheelhouse. Might not work, but still sounds like fun. From: AF mailto:af-boun...@af.afmug.com On Behalf Of Adam Moffett Sent: Thursday, April 2, 2020 2:45 PM To: af@af.afmug.com Subject: Re: [AFMUG] OT Project update What's this for anyway? Big sharp noise through a pipe is what I believe you said you wanted.....but what is the purpose? I suppose a gunshot sounds sharp in human terms, but it's really rapidly expanding gasses being released. In hindsight it makes sense that there would be an initial burst followed by diminishing secondary noises. If that's an issue, then aren't echoes in the pipe an issue too? I don't see how you would avoid the echoes. -Adam On 4/2/2020 3:37 PM, ch...@wbmfg.com wrote: Walther handgun will not fire power hammer loads. Does not seem to strike the rim at all. But a 1908 Savage rifle will. Seems gunshots are not a sharp impulse. Just a burst of noise I have discovered. No where near a perfect impulse. So having fun and probably scaring people driving up the highway but on a quest for a high quality shock wave/sound impulse. Recording engineers use balloons and clappers. I have a high power speaker driver coming. Going to see what happens when I get close to blowing it out with a capacitor discharge. -------------------------------------------------------------------------------- -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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