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17.6 Using Speechmap
The Speechmap fitting environment provides a number of distinctly different
stimuli. Speech and noise are analyzed in 1/3 octave bands and (except for pink
noise) data are presented as 3 curves. The top curve is the level exceeded 1% of
the time (speech peaks), the lower curve is the level exceeded 70% of the time
(speech valleys) and the middle curve is the average. Starting a test causes the
signal to be presented continuously - the speech signals run in a loop - and the
curves are updated frequently to show any changes you make to the hearing
instrument. Pressing <Continue> restarts the speech passage and the curves are
then calculated for the entire passage, producing an accurate display of the
speech region and LTASS, and an accurate SII calculation. When using live
speech, a <Freeze curve> button captures short-term speech features. See
SII calculation in Speechmap
Before starting, please review
facts,
17.9: REM or S-REM
v To access Speechmap, press <Tests>, then highlight & <PICK>
[Speechmap] from the REM tests list.
v To change screen setup, see
REM
mode.
v To set up hearing instrument type, highlight & <PICK> [Instrument], then
highlight & <PICK> BTE, ITE, ITC, CIC, Open, Body, CROS or FM. This
changes microphone location effects and the RECD used in S-REM and 2cc
targets, and the reference microphone used for FM and CROS.
v To enter audiometric data, see
v To run a test, highlight and <PICK> one of the 4 REAR buttons. Then
highlight and <PICK> [Stimulus] to select the stimulus type. Highlight and
<PICK> [Level] to select stimulus level. Press <Continue> to run the test and
display the data. See,
FastFacts 17.6: Using Speechmap
0611
and
19: Speechmap Technical
10: Real-Ear Measurement
mode.
11: REM Screen
18.2: Assessment data
17.7: Screen tour
&
RM500SL User's Guide Version 2.8
Details.
Setup,
17.2:Speechmap
Setup, and
17.9: REM or S-
entry.
18: Speechmap Fitting
17.10:
Procedures.
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