Specifications

compensates for the fact that the supplied MIC02 inverting the signal as do most
measuring microphones. However, it is possible to correct this issue in a more
elegant way using the Input Polarity button . In our example we will measure a
relatively small two way loudspeaker. For a physical small speaker it is advisable to
put the microphone at 50-70cm from the speaker, thus obtaining a longer
reflection-free measurement than when testing at 1m. The greater the distance
between both the speaker and the mic. from any reflecting surfaces, the better.
In the above figure you see the common practice of placing absorbing material to
attenuate the first reflection. However be advised that, as long as this affects only
high frequencies, it has the disadvantage of masking the exact arrival time by
slowing the rise of the reflected impulse. Therefore, it is ideally better to delay the
arrival time of the first reflection than to absorb it, if possible.
Once the set-up is ready, if there is a volume control turn it to the lowest position
and switch the amplifier on. Check that the microphone power supply is on, set
CLIO Input gain to -30dBV, and verify that the bar-graph on the right of the Level
Meter responses to a hand clap. Set the latter to dBSPL.
4 ENJOY CLIO POCKET 43