This is an old revision of the document!
Protocol: Bilateral Audigence-Audina Trial (for Dummies)
Session 1: (projected dates: 4/27-5/8)
- Hearing test (tymps, audio – air, bone, SRT, WRS)
- Modified Listening Situation Questionnaire & modified APHAB with current HAs
- Outcome measures with currents HAs bilaterally in soundfield
- Calibrate with BKB Cal tone
- 1 trial list of BKB-SIN, then 4 test lists (2 pairs) of BKB-SIN + 1 list of CNC words/phonemes) presented at 60 dB SPL (49 dB on the dial) through Clarujust Sound Player function:
- BKB-SIN: sentence in L speaker, noise in L/R
- Obtain Clarujust scores on current HAs at 60 dB SPL (do not connect HAs to Clarujust)
- Calibrate Clarujust using Sound Calibration function (1K scaled)
- Record 60 SPL presentation level in Sound Calibration window
- Present 1 set (14 phonemes) in quiet as a trial
- Present 1 set in quiet with current HAs
- Present further sets until 50% SNR breakdown point is found
- Clarujust scores measured without any hearing instrument at 60 dB SPL
- In quiet
- At 50% breakdown SNR level
- If they need higher than +6 SNR to get 50% just record the score at a + 6 SNR
- Real Ear measurements (Speechmap in 3 settings: 1. no HA, 2. HA in but off, 3. HA on)
- Insert USB memory stick and set Verifit to save XML data
- Press SETUP and pick PRINTING
- Pick PRINT TO USB FILE
- Press SETUP
- Pick SESSION
- Pick ENABLE FILE BASED DATA EXCHANGE
- Pick USB DRIVE and Continue
- Run Tests – Speechmap “carrots” at 55dB, 65dB, 75dB, MPO in 3 settings
- Press SESSION and pick ERASE ALL DATA and Select STORE SESSION TO FILE and Continue
- Transfer XML data to study laptop and email data to Steve
- Earmold impressions if necessary
- Send earmold impressions to Audina
- Send all audiometric information (and earmolds in applicable) to Audina to order HAs
Session 2: (projected dates: 5/11-5/22)
- Audina will Autofit the instruments to subject’s audio (Single Memory, NR will be turned off, Directional mics off)
- Obtain Clarujust scores with Autofit at 60 dB SPL (do not connect HAs to Clarujust)
- Calibrate Clarujust using Sound Calibration function (1K scaled)
- Record 60 SPL presentation level in Sound Calibration window
- Present 1 set (14 phonemes) in quiet as a trial
- Present 1 set in quiet with current HAs
- Present further sets until 50% SNR breakdown point is found
- Real Ear measurements (Speechmap in 3 settings: 1. no HA, 2. HA in but off, 3. HA on)
- See #6 above for detailed procedure
Session 3 (two weeks after Session 2. Projected dates: 5/26-6/12)
- Outcome measures with Audina Autofit HAs bilaterally in soundfield
- Calibrate with BKB Cal Tone
- 1 trial list of BKB-SIN, then 4 test lists (2 pairs) of BKB-SIN + 1 list of CNC words/phonemes) presented at 60 dB SPL (49 dB on the dial) through Clarujust Sound Player function
- BKB-SIN: sentence in L speaker, noise in L/R
- Listening Situation Questionnaire & modified APHAB with Audina HAs
- Read instruments settings using ezOrange and save snapshot to file
- Steve will send – should not need to ever go into ezOrange screen except to go save to file
- Run optimization bilaterally for 20 minutes at medium level (60 dB SPL or 49 dB on the dial) * *
- Calibrate Clarujust using Sound Calibration function (1K scaled)
- Record 60 SPL presentation level in Sound Calibration window
- Present 14 phoneme sets to determine subject’s 50% SNR breakdown point
- Select 50% breakdown test number as new Baseline
- Unflag all previous tests not done at this presentation level, SNR and on these instruments
- Record test number for new baseline and optimized maps
- Run optimization bilaterally for 20 minutes at loud level (80 dB SLP or 69 on the dial) * *
- In Sound Calibration window, note 80 dB SPL as presentation level
- Present 14 phoneme sets to determine subject’s 50% breakdown point
- If their percentage is >50% at -3 SNR just record the score at -3 SNR.
- Save snapshot of settings to file
- Set compression and bump, tilt & gain based on optimization from the best performance at 60 dB SPL
- Real Ear with optimized setting
- See Session 1, #6 for detailed procedure
Session 4 (two weeks after Session 3. Projected dates: 6/9-6/26)
- Outcome measures with Audina HAs with Opt 1 bilaterally in soundfield
- Calibrate with BKB Cal Tone
- 1 trial list of BKB-SIN, then 4 test lists (2 pairs) of BKB-SIN + 1 list of CNC words/phonemes) presented at 60 dB SPL (49 dB on the dial) through Clarujust Sound Player function
- BKB-SIN: sentence in L speaker, noise in L/R
- Listening Situation Questionnaire & modified APHAB with Audina HAs
- Read instruments settings using ezOrange and save to file
- Steve will send – should not need to ever go into ezOrange screen except to go save to file
- Run optimization bilaterally for 20 minutes at medium level (60 dB SPL or 49 dB on the dial) * *
- Calibrate Clarujust using Sound Calibration function (1K scaled)
- Record 60 SPL presentation level in Sound Calibration window
- Present 14 phoneme sets to determine subject’s 50% SNR breakdown point
- Select 50% breakdown test number as new Baseline
- Unflag all previous tests not done at this presentation level, SNR and on these instruments
- Record test number for new baseline and optimized maps Is there some way this could be saved automatically in Audigence?
- Run optimization bilaterally for 20 minutes at loud level (80 dB SLP or 69 on the dial) * *
- In Sound Calibration window, note 80 dB SPL as presentation level
- Present 14 phoneme sets to determine subject’s 50% breakdown point
- If their percentage is >50% at -3 SNR just record the score at -3 SNR.
- Save snapshot of settings to file
- Set compression and bump, tilt & gain based on optimization
- Exactly how? Do we “Save to HI” from Clarujust after reselecting parameters from best performance at 60 dB HL? Do we need to use any functions in ezOrange?
- Real Ear with optimized setting
- See Session 1, #6 for detailed procedure
Session 5(one month after Session 3 or 4. Projected dates: 6/26- 7/12 or 7/9-7/26):
- Listening Situation Questionnaire & modified APHAB with Audina HAs Opt 2
- Run Outcome measures bilaterally (1 trial list of BKB, then 4 test lists/1 list of CNC)
- Calibrate with BKB Cal tone
- 1 trial list of BKB-SIN, then 4 test lists (2 pairs) of BKB-SIN + 1 list of CNC words/phonemes) presented at 60 dB SPL (49 dB on the dial) through Clarujust Sound Player function
- BKB-SIN: sentence in L speaker, noise in L/R
- Real Ear with current settings
- See Session 1, #6 for detailed procedure
- Set hearing aids to subjects preferred settings
- * Prior to each optimization find SNR level for ~ 50% phonemes correct