Re: How do I find microphone output voltage?


<taperecorder@xxxxxxxxxxxxxx>

How can I calculate the output level of a microphone,
I assume it is found from the Sensitivity , but how?
For example, I want to know what voltage I will
get if the SPL is 60dBA (on the sound level meter)

For example, I find in the data*** Sensitivity = -40dB
Assuming this is actually dBV, then it should be 10mV
(1Volt/100), but at what SPL is that taken?



** The data *** should tell you - but the usual reference
pressure level these days is 10 microbars ( ub) or
1 Pascal(Pa) .

A "microbar " is one millionth of atmospheric pressure and
equates to 74 dB SPL.

So, 10 ub = 94 dB SPL.



........ Phil



.

Quantcast