Iec 60268-16 Rev - Vox -01 Operating Manual

Speech intelligibility
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Tap "Start" on the VOX-01
Wait for 25 seconds while the measurement takes place. Make sure that signal
playback is not interrupted, and that the acoustic environment is stable and free
from impulsive sounds (such as door slams).
You will see that the STI on your screen stabilizing towards its end value.
Optionally, you can press "save" once the measurement is finished to store
the data, to be browsed or downloaded to PC later. A measurement number
is assigned to each saved measurement. This number is displayed at the
bottom right of the screen (preceded by a "#" character), above the batter y
indicator.
That is really the entire procedure. If you are new to STIPA measurements, please consult
tutorials and standards to make informed decisions about the STIPA signal playback level,
measuring positions, number of repeated measurements, etc.
The Quick STIPA module also shows some additional measurement information:
The A-weighted sound pressure level
The qualification band (a letter between A and U) that is used in some
standards and defined in IEC 60268-16 rev. 4.
A label ("bad"-"excellent") the characterizes intelligibility based on the STI
The arrows in the blue bar on the top of the display van be used to navigate through the
different screens for each module. The Quick STIPA app has three screens: "STI", "settings",
and "browse measurements".
"Settings" screen and "browse measurements" screen. The latter screen is nearly identical to the
STI measurement screen, but with previous/back buttons instead of start/stop and save buttons.
The "settings" screen give you some options to control the appearance of your measure
ment results:
VOX-01 Operating Manual
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