Setting prescriptive targets
Greg Nassar
Clinical Scientist
MCHAS
RECD Refresher Course
17th November 2004
Prior to child arriving
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Select a client
PTA (save and close as we don’t have PMS)
Select appropriate hearing aid
Open HA software (new battery, connect
leads, switch on then….)
• Open REM software
– DSL [i/o] or NAL-NL1 set-up screens
– Calibrate new probe tube
– Prepare coupler response
RECD Refresher Course
17th November 2004
DSL [i/o] set up on Unity
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Access via the screwdriver icon
Check DOB
Transducer- how did you test
hearing?
HL to SPL- measured or manual
RE to 2cc- Measured or manaul
Max Output (ULLs)
Speech- UWO is specific child
spectrum that takes child’s own
voice into account (see Phonak Focus 20)
Circuit- majority of HA on contract
have fixed CR. If planning a linear
strategy set to LINEAR
Compr. Threshold- minimum or
40-45 if WDRC strategy
RECD Refresher Course
17th November 2004
DSL [i/o] set up on Aurical
• First screen
• Check DOB
• Transducer- how did you test
hearing?
– Sound Field (uses REUR for
HL- SPL transform)
– Insert/custom (used EAR3
with earmould)
– TDH- uses average REDD
(discussed earlier)
– ME Insert (more on this later)
• HL to SPL- predicted or
measured
• HI type
• Compression type- as before
• Compression Threshold- as
before
RECD Refresher Course
17th November 2004
NAL-NL1 set up on Unity
• Similar to DSLi/o except:
– Number of hearing aids
– Limiting refers to how MPO
on hearing aid is adjusted
(single channel or
multichannel)
– Earmould acoustics
– Number of compression
channels ((new DSL m[i/o])
– Uses BC values (new DSL
m[i/o])
– Can measure REIR &
REAG
RECD Refresher Course
17th November 2004
NAL-NL1 set up on Aurical
• Same as previous but
with additional control
to select REAG or
REIG
RECD Refresher Course
17th November 2004
Hello young man!
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Otoscopy
Tympanometry (if not performed during behavioural audiometry)
• Measure RECD
– Save session, then re-open from session list
• Send him out/for a break/breather etc…
• Attach aid to coupler
– Close lid
– 50, 65, 80 dB speech noise (modulated on Aurical)
– 90 dB pure tone sweep
• Program aid
RECD Refresher Course
17th November 2004
Demo then hands on
practical session
RECD Refresher Course
17th November 2004