Audio Control SA-4100I User Manual

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If a pure sine wave was playing at a certain frequency, then the micro-

phone would measure this, and the FFT display would show a peak

at the fundamental frequency. If however, this pure sinewave was

overloading the power ampliers and causing distoron, then the FFT

graph would display the fundamental frequency peak, as well as other

(naugher) peaks at higher harmonic frequencies.

Note: If the Fast Fourier Transform seems to be running slowly, ask the

band to pep it up a bit.

Menu items along the boom allow you to (from le to right):

• Change the graph-smoothing in fracons of an octave

• Pause/start the measurement

• Save and recall measurements

• Setup the internal signal generator to play audio through your

sound system

• Setup the display, such as SPL range, frequency range

• Choose the measurement decay rate

Experiment with any of the FFT controls unl you are also at one with

them. If this was Scouts, you would then proudly earn your FFT badge.

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Audio Control SA-4100I iOS Measurement Microphone SA4100I