NTi Audio Acoustilyzer AL1 - Manual (Page 15)

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Measurement Functions
• SPL/RTA: SPL & RTA measurement
• RT60: Reverberation Time
• FFT: Real time zoom FFT
• Polarity: Speaker polarity
• Delay: Delay time
• RMS/THD: RMS level and distortion
• STI-PA: Speech intelligibility
• Calibrte: Calibration menu
Screen Selector
The SPL/RTA, RT60 and STI-PA
measurement functions can be viewed in
two test result screens.
For example, the SPL/RTA “123” selector
displays the sound level meter screen
while the bargraph symbol selector
displays the real time spectrum analyzer.
Short-cut
Hold the ESC button down and
simultaneously press the left or right arrow
key to switch between the two display
screens within the same measurement
function.