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PAA6
English
5. Peak Hold
– The peak hold function will cause the highest signal peaks to be held for a short period
of time, giving a better visual representation of these high peaks. This is typically represented by a
small red line/dot at the top of the frequency bar. This red mark will remain for as long as the peak hold
time is set, or until the frequency’s signal rises above the previous peak.
6. Weighting
– Any audio analyzer needs to be designed so that it hears sound properties in a manner
that would be appropriate for the measurements it is taking. For example, the sensitivity of human hear-
ing is restricted to the frequency range of 20 Hz to 20 kHz. The human ear, however, is most sensitive
to sounds in the range of 500 Hz to 8 kHz. The ear becomes progressively less sensitive to sound out
of this range. Microphones, however, are not restricted by this limitation and therefore do not respond
in the same manner that our ear would.
Audio analysis devices such as the PAA6 provide various weightings for the measurements taken to
compensate for the increased and decreased sensitivity. The weighting determines the curve that the
PAA6 will use to interpret the input signals from the chosen input source. Flat, A-, B- and C-weightings
are available. Each of these weightings is ideal for different applications, with A-weighting perhaps be-
ing the most commonly used (and that which most closely matches the human ear) and internationally
recognized standard for measurement.
7. Octave
– Changing the octave allows users to change the resolution of their measurements. For
example, measurements taken in 1/6th octave measurements are much finer than those taken at 1
octave increments. Users can also opt to take measurements in 1/3rd and 2/3rd octave increments.
8. Frequency Detect
– This function can be turned on and off on the RTA and FFT functions. This will
give an on screen real-time update of the frequency with the highest level. These results will be given
on the top of the channel window. There will also be a yellow arrow indicating the frequency within the
RTA and FFT results.
9. Subtract/Sum
– This features does exactly what it says: allows the users to add or subtract the two
input channels to or from one another.
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Summary of Contents for PAA6
Page 1: ...PAA6 User s Manual Manual del Usuario...
Page 13: ...9 PAA6 English figure 5 figure 6 figure 7...
Page 59: ...55 PAA6 Espa ol...
Page 68: ...PAA6 9 Espa ol figura 5 figura 6 figura 7...
Page 115: ...2 PAA6 Appendix NOTES...
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