I'm a bit bored, nothing electronic happening, so to speak, but I found this via rec.audio.pro
The new mathematical approach for recording with a microphone:
The mike should be neither too close, nor too far from the sound source. A simple formula often used by professionals to calculate the optimum distance to the source, D, is given by:
D = 4.72 x 10^-3 x (2pi/SV)[sin(M/T) - cos(M/2T)] dM/dt + e^[h(H'- H) sqrt(H/H')] x log (1/[SVT^2]) +/- msp
Where:
- D = the desired distance in inches * H = height of the sound source in meters * H' = height of the mike in yards * V = max volume of the source in dBm * S = sensitivity of the mike in millivolts per dBm * T = mean temperature of the room in degrees Melvin * h = Plank's reasonably constant * M = arc tan (area of microphone diaphragm, in round mm) * and msp = mistake someplace, in watt-kilograms/hour.
The best microphone for an accordion is none. (This rule-of-thumb also applies to bagpipes and rappers.)
anyway there is a lot more on
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martin
After the first death, there is no other. (Dylan Thomas)