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3. On the main RTA display, hold the ENTER button for approximately 2 seconds to activate the SPL screen. Press the ENTER button once to exit. NB. You can easily refresh the Max SPL value by holding both the â left and â right keys simultaneously for at least one second.
RT60 (Reverb Time Analyzing)
The RT60 function of the PAA3 is easy enough to understand: it is basically the time it takes for a signal to drop 60 dB. Getting the average of many different RT60 calculations from around a room allows users to get an idea as to how much absorption or reflection of audio the room provides. Depending on your needs, you may wish to have a high or low RT60 measurement. For example, for public speaking, an RT60 measurement of less than 1 second is preferable, as to have a clear, concise voice conveyed to the audience. With choirs or instrumental music, an RT60 measurement of greater than 1.5 seconds may be appropriate. It all depends on your needs.
Measuring Reverb Time:
1. Press enter to open the main menu and select âRT60.â 2. Simply click âRUNâ to get your RT60 reading. 3. The PAA3 will wait for a signal greater than 30 dB over the background noise level (detected prior to the measurement). A little helpful hint: the louder the test signal, the greater accuracy of your RT60 calculation. 4. Play the pink noise from the included CD through your audio system. Slowly move the master fader up, to a point where the audio level received by the PAA3 is greater than 30 dB. Quickly mute the system to get your RT60 reading as accurate as possible. 5. After the measurement is taken, the RT60 measurement will appear onscreen.