Lesson 1Maximum power output (MPO) and output limiting strategies for loudness and safetyIt explains max output ideas, measuring, clinic tweaks. Reviews limiting by compression or clipping, balancing hearing, sound good, safety to stop loud pain and ear harm over time.
Defining MPO and its clinical relevanceMeasuring MPO in coupler and real earCompression limiting vs peak clippingSetting MPO for comfort and safetySpecial MPO issues in pediatric fittingsLesson 2Overview of hearing aid styles and form factors (BTE, RIC, ITE, CIC, RITE) and clinical implicationsIt describes main aid styles like BTE, RIC, ITE, CIC, RITE. Looks at looks, sound, handling effects, plus who fits like hand skill, ear shape, loss level.
BTE and thin-tube fittingsRIC and RITE design considerationsITE, ITC, and CIC custom devicesOpen vs occluded fittings and ventingStyle selection based on patient needsLesson 3Common manufacturer fitting software features that affect verification (real-ear simulated targets, coupler-based presets) and limitationsIt checks how company software makes fake real-ear targets and coupler starts. Talks limits, age vent effects, why own real-ear check still needed for personal fits.
First-fit algorithms and default presetsReal-ear simulated targets in softwareCoupler-based fittings and assumptionsImpact of venting and acoustic couplingWhy REM is needed beyond softwareLesson 4Technical classifications: analogue vs digital, receiver-in-canal vs receiver-in-ear, programmable featuresIt sorts aids by sound handling and shape. Explains old vs new digital, RIC vs RITE words, key changeable parts that help fit ease, checks, patient results.
Analog vs digital processing basicsBTE, RIC, RITE, ITE, CIC distinctionsTelecoil, wireless, and streaming optionsDirectional microphones and noise reductionData logging and adaptive featuresLesson 5Fitting formulas: NAL-NL1/NL2 — principles, targets, strengths for speech intelligibilityIt covers NAL-NL1 NL2 making, aims, targets. Stresses speech clear making, sound equal, picking between for grown-ups and special groups.
Historical development of NAL formulasSpeech intelligibility and loudness goalsDifferences between NAL-NL1 and NAL-NL2Selecting NAL vs DSL for adultsVerifying NAL fittings with REMLesson 6Fitting formulas: DSL v5 — principles, pediatric origin, use for severe losses and loudness managementIt looks at DSL v5 story, child focus, and sound balancing. Covers who suits it, target making, severe loss handling, stressing comfort, hearing range, and checks in regular clinic work.
Historical development and pediatric rationaleLoudness normalization vs equalization conceptsDSL v5 targets for severe and profound lossesManaging loudness discomfort and safetyVerification of DSL fittings with REMLesson 7Real-ear verification (REM) fundamentals: probe placement, calibration, typical target curves and interpretationIt starts with real-ear basics, tools, and setup. Learn probe tube placing, reference mic use, and reading common target lines like REAR, REIG, speech maps in clinic programs.
REM equipment and signal typesCorrect probe tube placement techniquesCalibration and reference mic controlUnderstanding REAR, REIG, and RECDReading and interpreting target curvesLesson 8Documentation and reporting for verification: recording REAR/REIG, target deviations and clinical decision rulesIt gives best ways to record checks, like REAR/REIG graphs, misses from targets, and choices to make. It stresses clear notes for legal needs, follow-ups, and talking with other health workers.
Recording REAR and REIG measurementsDefining acceptable target deviationsNoting MPO and loudness outcomesWriting clear clinical justificationsReporting for referrals and insurersLesson 9Clinical resources and evidence summaries from professional bodies (recommendations for REM use)It sums up advice from groups like AAA, ASHA, BSA on checking fittings. It stresses proof for real-ear measures, best ways to do them, recording, and fitting these good practices into normal clinic work.
Key AAA and ASHA REM recommendationsBSA and international REM guidanceEvidence comparing REM to first-fitBarriers to guideline implementationCommunicating best practice to patientsLesson 10Compression basics: attack/release times, number of channels, kneepoints, wide dynamic range compression rationaleIt explains why we use compression and its parts like start/stop times, channels, and bend points. It talks about wide range compression for clear speech and how settings help comfort without funny sounds during checks.
Goals of compression in hearing aidsAttack and release time trade-offsNumber of channels and fine-tuningKneepoints and compression ratiosWDRC and speech audibility benefitsLesson 11Functional verification: aided speech-in-noise testing (QuickSIN, HINT), aided warble-tone thresholds, aided soundfield testingIt shows how to check if aids work in noise using tests like QuickSIN, HINT, tone thresholds, and soundfield. Learn to read results with real-ear data to advise patients and adjust aids properly.
Aided soundfield warble-tone thresholdsQuickSIN setup and score interpretationUsing HINT and similar speech testsRelating functional tests to REM dataCounseling patients using test resultsLesson 12REM protocols: aided response, speech mapping, measurement conditions (soft, conversational, loud inputs) and corrections for SPL vs dB HLIt covers real-ear steps for aid responses and speech maps. It includes test sounds, levels like soft talk or loud, conditions, and changing SPL to dB HL for true, matching check results.
Selecting test signals and stimuliSoft, conversational, and loud inputsAided response vs insertion gain viewsCorrections between SPL and dB HLManaging test–retest variability
