Audio Analysis Functions - Phonic PAA3 Manual Del Usuario

AUDIO ANALYSIS FUNCTIONS

The following section contains information concerning
acoustic analysis, and illustrates how to use the PAA3 to
measure various properties of your audio.
RTA (Real Time Analyzer) - Accoustic
This function analyzes the audio received through either the
built-in mic or Line In connection, divided into 31-bands at
1/3 octave intervals, and displays the relevent information
on a bar graph that shows the decible level of each band
of sound from 20 Hz to 20 kHz in four different response
times (35 ms, 125 ms, 250 ms, and 1 sec) and in three
weighting types (A weighting, C weighting and Flat). For
more info on response times and weighting, please consult
the appropriate sections.
Procedure：
After the start up sequence of the PAA3 is complete,
1.
the real time analyzer will appear on the LCD screen.
Go to the SETTING menu to set the appropriate
2.
weighting, level range, response time, or other
relevant properties.
Select VALUE from the main menu to enter RTA
3.
mode.
Press ENTER to freeze measurement data. Press
4.
ENTER again on the highlighted VALUE to view the
value of each center frequency.
Use the LEFT/UP and RIGHT/ DOWN buttons or
5.
simply scroll the JOG control to view the level of dB
SPL in real-time for the center frequency of all 31
bands. The default readout is the ALL FREQUENCY
level.
6
Beneath you will find two readouts: the numbers in the
left column display the frequency while the numbers
in the right column display the frequency levels. The
graphic shown indicates that the user has set the
level range at 50~110 SPL, A weighting. The max
level during the time of measurement is 105.5 dB,
The user is reading at 1 kHz, which has a dB SPL
of 102.8. If you would like to store the measurement
data in the memory of PAA3, go to the STORE menu.
Users can save the measured spectrum data into
one of the ten memories. Please refer to MEMORY/
STORE for more information.
Scroll through the various values located in the 'Hz'
6.
box until you come to a flashing ESC. Press enter to
exit RTA mode.
SPL (Sound Pressure Level) Meter
This feature of the PAA3 gives users an accurate
measurement of the overall "loudness" of their sound,
measured in decibels (dB). This is a true RMS-measurement,
using standard display time average, and standard A, C,
and Flat weightings.
RANGE WEIGHT
50 ~ 110 SPL
Procedure：
Enter the SPL/LINE menu and set the measurement
1.
unit to SPL.
You may select a range level, weighting, response
2.
time or a maximum level by going into the SETTINGS
menu, then onto the appropriate menus. The selected
values of these options will be displayed above the
RTA on the PAA3's default screen.
MAX
A 99.2
PAA3