YT video by PC: "The Impact of Material Composition on Resonance Properties"
 

I made a little video examining the impact of different materials and their resonant properties using a simple music box mechanism. Got this idea from Norm Varney of AV Roomservice, LTD. Norm is one of the best acousitical engineers in the business and built one of Robert Harley's dedicated listening rooms.

Anyhoo, here is the link to my little video:

https://youtu.be/-b1Vzxl7-to

Welcome thoughts and input from the gang.

Stephen-

Thanks for taking the time to do this experiment document and post the results.

Considering the price difference, the plumbing supple house specials will remain on my rack.

Having once made a prototype rack from that particle board/formica material, the sound changed dramatically on the finished product using maple butcher block material.

Fun stuff Stephen. My mind wonders how you might evolve this to span a wider frequency range & sound level. Obviously you need a different source.

How about a small speaker fed a series of test tones at various volumes. You could develop a designed experiment... the right shaped speaker would allow you to test lots of materials. Very curious to see how you could test Stillpoints that way.

Nice Stephen...what app are you using to measure?

Like what you did Stephen

Thanks, Craig.

I think the compelling thing about using the music box mechanism is that it won't make much if any noise if the material underneath effectively damps resonances.

I know, for a example, that a cone would make a lot of "music".

Hi Paul,
Not sure what you're referring to with respect to the app; I just made a little video with my Fuji X-H1 of the music box mechanism. Will be making another using EVPs.

Thanks, Ed. I got the idea from Norm Varney at A/V Roomservice.

Hi Stephen...the app on your iPhone that’s taking the measurements.

Ah, okay. If you're referring to the vibration measurements in about in another post, I'm using the VibSensor app.

I also like the Hamm Seismograph app for a real-time display of vibration when music is playing.