Response Time Measurement:
Click the <at-rt> to enable the attack and release time measurement. |
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Figure 82: Attack and release time measurement |
Click on the <at-rt> drop down menu and select pure-tone or burst. |
Click <go> or press the Enter key to start the actual measurement.
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Figure 83: Attack and Release Time Window |
A window will open allowing the selection of the starting input sound pressure level.
Enter the presentation time (in ms) corresponding to the level changes of the signal. Refer to Figure 83 for an example. Note: the overall time may not be longer than 4800 ms. If a time greater than 4800 ms is entered, the value of the field is set to the maximum possible value (i.e. 4800 ms). |
The level response line is calculated within 5-30 seconds following the completion of the measurement and the curve appears on the screen. Curves can be edited by clicking: <insert>, <hide>, or <delete>. It is possible to zoom in and out of the window by using the middle mouse wheel.
For more information, please refer to the section: “Measuring Display and Administrate Curves.”
Figure 84: Trigger points |
The ACAM System software records the trigger points for the attack and release time. These are shown in the diagrams using short vertical dash lines (Figure 84). Click on the curve to view the attack and release time values. |