2 viewing the real-time visible speech display, 3 viewing completed test results – Frye FONIX 7000 User Manual

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Real-Ear Measurements

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6.8.2 Viewing the Real-time Visible Speech Display

During the Visible Speech test, the analyzer displays four changing measure-
ment curves:

• Real-time measurement curve showing the immediate response of the

hearing aid

• Average frequency response of the hearing aid over the time of the test
• Maximum amplitude of the response per frequency
• Minimum amplitude of the response per frequency

These measurements together give the clinician both the real-time response of
the hearing aid and information about its response over the time of the test.

Press [STOP] when the average response curve has stabilized. This may take 30-
60 seconds.

6.8.3 Viewing Completed Test Results

When the Visible Speech measurement is stopped, the following changes occur:

• The region between the minimum and maximum response curves is

lightly shaded. This indicates the entire region of the frequency response
of the hearing aid over the time of the test.

• The region around the average frequency response curve is darkly shad-

ed. This region represents the standard deviation of the average response
curve. That is, the area containing most of the frequency response curves
measured during the test.

• The real-time measurement curve disappears. Since this curve represents

the latest measurement of an ever-changing speech signal, it is not rel-
evant to the overall test results displayed upon test completion.

See Figure 6.8.3 for an example of a completed Visible Speech measurement.
The curves consisting of Envelope 1 are labeled:

• 1U—Represents the maximum response per frequency over the time of

the test.

• 1u—Represents the upper boundry of the standard deviation around the

average frequency response.

• 1M—Represents the average frequency response of the test.
• 1l—Represents the lower boundry of the standard deviation around the

average frequency response.

• 1L—Represents the minimum response per frequency over teh time of the

test.

Other Visible Speech envelope measurements are labeled similarly using the
number of the envelope.

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