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6. Free Field Recorded Speech Audiometry
6.1 Set Up
f Connect an external amplifier/speaker to the LINE OUT jack
socket, and a CD, tape player, or other sound source to the
LINE IN jack socket; refer to Section 2.7 of this operating
manual.
f Press SPEECH & FREEFIELD and use Softkey 1 to ensure that
‘LINE’ is displayed in capitals (indicating that the line input is
selected).
f The line input is now routed to the external amplifier and
speaker; use LEFT and RIGHT to select the required amplifier
channel.
f Play the 1kHz calibration tone on the recorded material and
follow the calibration procedure in Appendix 2.
f The input signal is adjusted in 1dB steps by use of the
MASK rotary control.
f Adjust the input signal such that the LEVEL dB bar graph
reads 0dB.
6.2 Procedure
As described in 3.2
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