Test Box - 3-D Measurement
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The 3-D Measurement provides a comprehensive analysis of the frequency and input/output (i/o) characteristics of hearing aids. The frequency and i/o curves are measured simultaneously for frequencies 100 Hz to 10,000 Hz and for input levels of 40 dB to 100 dB.


3-D Measurement:

Click <3-D> to enable the 3-D measurment.

Figure 76: 3-D Measurement

Click on the <3-D> drop down menu and select the procedure to be performed.


Select from pure tone, CHIRP, noise, ICRA, or speech (babble of voices).

Click <go> or press the Enter key to start the actual measurement with the settings that are selected in setup.


Click <go> again or press the ESC key to interrupt or cancel the measurement.


Change the measuring points or turn the figure by using the three sliders located on the lower edge of the screen.