Options
Included AC/BC/SF
Frequencies
Defines which frequencies to exclude from the automatic frequency shift. The actual available
frequency range is defined by the selected transducer.
Note
•
You can always select any frequency manually.
Level Shift when
Storing
You can choose whether the new level should be referenced to the previous data point or be set
to a fixed level. If a data point already exists at the new frequency, this will be used as a ref-
erence point.
Note
•
The automatically selected level never exceeds 80 dB HL for reasons of safety.
Frequency Shift
when Storing
(None, Wrap, But-
terfly)
•
Wrap
:
Automatically selects the next, higher frequency. When it reaches the highest available fre-
quency, it wraps around to the lowest frequency.
•
Butterfly
:
Automatically selects the next, higher frequency. When it reaches the highest available fre-
quency, it goes to 1000 Hz and automatically selects the next, lower frequency. When it
reaches the lowest frequency, it automatically goes to 1000 Hz.
The direction depends on whether the previous data point was stored at a higher or lower
frequency.
2.8.3
Stimulus duration
You can set a fixed duration of the presentation of the tone stimulus. To do so, select
Tools
>
Options
>
Tone
>
Meas-
urement
>
Stimulus Duration
.
2.8.4
Ear shift frequency and level setting
When you change test ear, you can define that the frequency and level should be set to 1000 Hz at 20 dB HL. To do so,
select
Tools
>
Options
>
Tone
>
Measurement
>
Ear Shift Frequency and Level
. Check
Ear Shift Frequency and Level
.
2.8.5
Saving non-stimulus channel as masking
If you use an external masking signal (non-audiometer masking noise) for speech masking, you can choose to store the
presentation level of the non-stimulus channel as a masking level.
To do so, set
Tools
>
Options
>
Speech
>
Measurement
>
Use Non-Stimulus Channel as Masking
to
Yes
.
Madsen A450
33
2 Navigating in the Otosuite Audiometry module
