|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
199.46.199.230
In Reply to: RE: Speaker vibration measurement app posted by Charlie8521 on March 23, 2015 at 17:09:00
You would probably need to buy an accelerometer demo kit or eval board and invest the time to interface it to a computer and learn how to use it. It's not worth the effort IMO, and it wouldn't tell you whether the result is good enough.
For racks and speaker stands, I strike them with a suitable object and see if they ring. If they are metal, they usually ring. If so, I fill them with sand until they are dead or at least to where the resonant frequency and amplitude are both low enough so that the ringing is inaudible. If they are not metal, YMMV. Wood racks and stands can sometimes resonate too.
To determine the overall rigidity of the speaker + stand + floor connection, I usually play music with fast thumping bass transients and feel the back of the speaker to determine whether bass energy is being lost moving the speaker back and forth. I'm not sure if there is a better way.
If the stand has 4 points of contact, you also need to feel for how easily it can be rocked. If you're really careful about leveling, you can eliminate the rock, but it's something you don't have to be concerned about with a 3 point stand.
Follow Ups:
I use a vibration app in my iPhone which measures vibration in x,y,z axis just for this type of thing. Quite useful.
TIA
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
This is the app that I use: https://itunes.apple.com/us/app/vibration/id301097580?mt=8
However, I think that this one is even more appropriate for your uses:
VR Mobile - Vibration Testing
https://itunes.apple.com/us/app/vr-mobile-vibration-testing/id469459743?mt=8
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: