General
08 May 09
08 May 09
I'm looking for a device I can hang on the wall of my classroom that measures how loud the classroom is. Ideally it would give a result in big numbers that everyone could see or have a highly visible arm on a big dial. I'm having trouble finding it; the best I can find is used for "fine tuning stereo systems" at Radio Shack for $50.
Anyone know about this stuff?
08 May 09
Originally posted by AThousandYounghttp://en.wikipedia.org/wiki/Sound_level_meter
I'm looking for a device I can hang on the wall of my classroom that measures how loud the classroom is. Ideally it would give a result in big numbers that everyone could see or have a highly visible arm on a big dial. I'm having trouble finding it; the best I can find is used for "fine tuning stereo systems" at Radio Shack for $50.
Anyone know about this stuff?
???
08 May 09
1 edit
Originally posted by AThousandYoungAre you interested in making this with the kids?
I'm looking for a device I can hang on the wall of my classroom that measures how loud the classroom is. Ideally it would give a result in big numbers that everyone could see or have a highly visible arm on a big dial. I'm having trouble finding it; the best I can find is used for "fine tuning stereo systems" at Radio Shack for $50.
Anyone know about this stuff?
It would be a lot cheaper to make than $50 and not that hard.
One of these:
http://www.national.com/mpf/LM/LM3915.html
And an old tv set (for the other bits) and you are away.
Oh and a bit of veroboard (stripboard).
I've made a few of these to power musical water pumps for a special needs school (I had to use large amps for that though), your use is not much different.
Edit: Tell me the make and model of your scrap tv and I will tell you what bits you need from it, when it comes to the output you have a number of options.
08 May 09
Originally posted by AThousandYoungDo you have a lot of black females in your classroom?
I'm looking for a device I can hang on the wall of my classroom that measures how loud the classroom is. Ideally it would give a result in big numbers that everyone could see or have a highly visible arm on a big dial. I'm having trouble finding it; the best I can find is used for "fine tuning stereo systems" at Radio Shack for $50.
Anyone know about this stuff?
09 May 09
Originally posted by kirksey957Some do, sometimes. There's one girl who is so rebellious and angry...such a typical teenager stereotype.
Well, in that case you need one of those decibel meters like they monitor airline take-offs with.
Do they like get up in your grill and say stuff like "Excuse me! I don't think so."