Does anyone know how those magnetic dial guage stands work, the sort where you push a button or turn a knob to activate the magnetic force?
Thanks
finnigan
Hello,
I have some panasonic microphone capsules (output impedance 2k) that should run on a 10 volt 0.5 mA pantom power supply, how could I use the ICP power supply that I already have, to power the microphone capsules? The ICP power supply is 24 volt, 4 mA constant current. It is designed for...
The following code is part of a program I've cobbled together to extract modal parameters from multiple frf's, it extracts the polynomial coeffiients. It's adapted from the diamond modal toolbox and I'm running it in GNU Octave which is an open source matlab clone.
The problem I'm having is...
found this site for excel addin. Over 200 functions, tho' I've not tried it yet.
http://digilander.libero.it/foxes/SoftwareDownload.htm
sorry its not a link you can click on (i havent worked out how to do that)
best regards
finnigan
Could anyone tell me if I am calculating sound intensity properly? The main difficulty I am having is when it comes to calculating the PI index. In theory the Intensity level in dB should equal the sound pressure auto spectrum average of the two mikes in dB when in perfect free field conditions...
Does anyone know how the phase compensation features found in modern sound intensity analyzers are calculated? I'm using a home made intensity probe which has upto 10 degrees phase difference between the two microphones at very high frequencies when exposed to the same sound source. The way I...
I need to obtain or build a small pre amplifier to use between the output of a small accelerometer ( output about 15mV)and the line-in of the soundcard of my computer. The output impedance of the accelerometer is about 75 ohms. It is important that it have very low noise and be very stable and...
I'm trying to measure the sound radiation of a cello by tapping the cello bridge with an impact hammer mounted on a pendulum, in the same direction it would be bowed and measuring the response with a microphone. My question is, how far must I place the microphone away from the cello to be sure I...
