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Routing Output
The Routing pushbuttons determine the routing for the stimulus to the output
transducer selected for Channel 1 and Channel 2. Left/Right delivers the stimuli
from the selected channel to both the left and right transducers with the combined
signal. Both the Channel 1 and Channel 2 maximum dB HL limits are
appropriately decreased from the non-mixed maximum dB HL limits.
The AudioStar Pro can support four speakers. Using a four speaker
configuration requires the instrument to be calibrated to accommodate all
speakers. Additionally, the speaker defaults and descriptions must be defined in
the Config App. When using four speakers a speaker routing dialog is displayed
when the Left/Right routing is selected and the transducer is speaker.
Note
: When using four speakers a single channel can have a maximum of three
speakers. The total of all channels cannot exceed four
Attenuators (HL Controls)
Channel 1 and Channel 2
The GSI AudioStar Pro contains two independent HL rotary controls for test
signal and masking intensity level control with a range of -10 dB HL to 120 dB.
HL Maximum dB HL values apply to the mid-frequencies with earphones only.
Refer to the specific transducer for dB HL limits in the Table in Appendix 1.
