Adding Comments To A Curve; Using The Cursor; Signal To Noise Ratio Calculation (3:1) - Interacoustics Eclipse Instructions For Use Manual

Eclipse Instructions for Use - US
6. Headset – the transducer used for recording.
7. Wave repro. – the waveform reproducibility percentage.
8. Residual noise – the residual noise level in nV.
9. Polarity – the polarity of the stimulus used for testing.
10. LP – the low pass filter frequency.
11. Fmp – the Fmp value.
12. HP – the high pass filter frequency.
13. Ratio – the signal to noise ratio. The SN10 (wave V trough marker) must be placed on the curve for
the ratio to be calculated.
14. Stim. – the test stimulus type (e.g., click, tone burst, CE-Chirp
15. Comments field – a curve comment.

3.2.16 Adding Comments to a Curve

Comments for the selected curve can be entered into the comments box in the upper right hand corner by
clicking inside the box and then entering text.
These comments will be displayed only when the corresponding curve is selected. All curve comments will
be printed on the "Curves Conditions" report page.
3.2.17 Using the
Cursor
Right click on the selected curve (not it's handle) to enable the double cursor. Alternatively, enable the
cursor from the View menu.
1. Move the mouse and click at the desired position. The first cursor is now locked on this position.
2. Move the mouse to the drag the second cursor to the desired position. The boxes in the Cursor
window will now display the position at which the first cursor was fixed, the present position of the
second cursor and the difference between these two positions.
3. Remove the double cursor by left clicking with the mouse.

3.2.18 Signal to Noise Ratio Calculation (3:1)

Calculate the signal to noise ratio (SNR) of the waveform by placing the wave V marker and the SN10 (wave
V trough marker) on the selected curve. The Ratio is the amplitude of Wave V peak to SN10 trough. The
noise is automatically calculated based on the residual noise value.
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