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Summary of Contents for oticon Sumo XP
- Page 1 Fitting Guide Sumo XP...
- Page 3 Introduction Advanced technology and fitting strategies provide vastly improved hearing instrument solutions for people with severe to profound hearing loss. However, this distinctive group of clients continues to present challenges that require careful and intelligent fitting. Studies have shown that this population may have reduced dynamic range, "dead zones" within the cochlea, large variability in speech perception scores, increased distortion, lower audibility of signal, and often quite poor speech perception.
- Page 4 Step 1: Select Instrument and Rationale SUMO is fitted using Genie 2.1 (or higher). SUMO incorporates linear gain amplification, which is applied as specified by standard gain rationales. Detect Instruments For a fast and easy fitting; connect the instruments to the HI-PRO and click on the Detect Instruments button.
- Page 5 Step 2: Fitting SUMO There are 3 main issues to deal with when fitting severe or profound hearing losses: MPO, Feedback and Frequency Response. The structure of this guide follows the recommended fitting flow as shown in the following 5 steps: Step 2a Step 2b Step 2c...
- Page 6 Step 2a: Check the MPO Level The fitting software will always prescribe an MPO based upon the hearing threshold and the age of the Fitting tip: wearer. Despite this, due to the restricted dynamic range associated with severe to profound hearing losses, If the preferred MPO setting is not it is very important to begin the fitting session by checking that the MPO is set correctly.
- Page 7 Then Select Limiting Options Fitting tips: 1) If clients complain that the sound is harsh or distorted with PC, then try Peak clipping is the default MPO one of the AGC options. limiting method for SUMO. This will provide the client with the highest 2) Changing from PC to either AGC MPO Level possible output at every moment,...
- Page 8 Step 2b: Check For Feedback Although the prescribing algorithm takes the risk of feedback occurring into account when calculating FBM tool Feedback Mgr. the prescribed setting, there is still some risk of feedback occuring when the fitting session begins or at Feedback Manager This tool eliminates higher volume control levels.
- Page 9 Feedback Management Tool The Feedback Management tool (FBM) tool shows a graph with a marked Feedback Area. There is a high Fitting tips: likelihood of feedback occuring if the prescribed Insertion Gain falls within this area. This area is used in The FBM tool is a routine to optimize the initial prescribing algorithm to prescribe a setting without feedback when the fitting session opens.
- Page 10 Step 2c: Check the Frequency Response Frequency Response A-Gram Slope Adjusts the low frequency sounds (LC) or high frequency sounds (HC) according to the slope of the audiogram. Crossover Frequency Adjusts the frequency at which point the A-Gram slope circuit cuts the low and high frequencies.
- Page 11 Step 2d: Check Programmable Volume Control Fitting tips: 1) Before reducing the range, make sure that appropriate gain is fitted in Volume Control allows on-screen adjustment of the instrument's VC during the fitting. Manual the Full range, and that the VC is set operation overrides the on-screen setting of the VC and vice versa.
- Page 12 Step 2e: Program the function switch for T -coil and FM/DAI FM/DAI fitting tips: 1) When using the SUMO FM adapter shoe (part# 399-50-920) SUMO's programmable function switch, marked M-1-2, allows for a variety of user configurations. and a plug-in FM receiver, SUMO's After the appropriate switch function has been selected for the user, consider activating the Telecoil default switch setting becomes: Boost, which adds 6dB to the response.
- Page 13 Earmold Advice and Information The high Gain and MPO of a super power hearing aid like SUMO XP makes the physical Earmould fitting tips: fit of the earmould very important in providing the client with a good setting without 1) To make a good tight earmould, the risk of feedback.
- Page 14 Fitting SUMO to Children For the small ear canals of infants and children, the acoustics of standard measurements (2cc and IEC 711) are not representative, as the Open Ear Response of infants and children differs from that of adults. Because hearing aid and audiometer calibrations are performed according to adult standards, corrections are needed for the ears of an infant or a child.
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Page 15: Troubleshooting
Troubleshooting ➔ Problem Solution Increase = Decrease = Move Left = Move Right = Speech Intelligibility Speech is unclear UCL ! 2 dB. In quiet A-Gram " 1 step, UCL ! 2 dB. If A-Gram is in LC, Gain ! 2 dB. A-Gram "1 step. - Page 16 ➔ Problem Solution Increase = Decrease = Move Left = Move Right = Too Loud Soft sounds Gain $1 dB. A-Gram "1 step. If A-Gram is in HC, Gain $2 dB. Low Frequencies A-Gram #1 step. If A-Gram is in LC, Gain $ 2 dB. High Frequencies Loud sounds Decrease UCL $ 2 dB.
- Page 17 ➔ Problem Solution Increase = Decrease = Move Left = Move Right = Sound Quality A-Gram # 1 step. Sounds are too sharp A-Gram # 1 step. If A-Gram is in LC, Gain $ 2 dB. UCL ! 2 dB. A-Gram "1 step.
- Page 18 We believe that it takes more than technology and audiology to create the best hearing instruments. That’s why we put the individual needs and wishes of hearing impaired people first in our development of new hearing care solutions. www.oticon.com...
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