Hearing aids:
Gespeichert in:
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| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Sydney
Boomerang Press
2012
Stuttgart ; New York, NY Thieme |
| Ausgabe: | 2. ed. |
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| Online-Zugang: | Inhaltstext Inhaltsverzeichnis |
| Beschreibung: | Literaturangaben |
| Beschreibung: | XVI, 608 S. Ill., graph. Darst. 27 cm |
| ISBN: | 9781604068108 1604068108 |
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IMAGE 1
BRIEF CONTENTS
PREFACE XVI
1 INTRODUCTORY CONCEPTS 1
2 HEARING AID COMPONENTS 20
3 HEARING AID SYSTEMS 50
4 ELECTROACOUSTIC PERFORMANCE AND MEASUREMENT 81
5 HEARING AID EARMOLDS, EAR SHELLS AND COUPLING SYSTEMS 127
6 COMPRESSION SYSTEMS IN HEARING AIDS 170
7 DIRECTIONAL MICROPHONES AND ARRAYS 198
8 ADVANCED SIGNAL PROCESSING SCHEMES 226
9 ASSESSING CANDIDACY FOR HEARING AIDS 255
10 PRESCRIBING HEARING AID AMPLIFICATION 286
11 SELECTING, ADJUSTING AND VERIFYING HEARING AIDS 336
12 PROBLEM SOLVING AND FINE-TUNING 354
13 PATIENT EDUCATION AND COUNSELING FOR HEARING AID WEARERS 374
14 ASSESSING THE OUTCOMES OF HEARING REHABILITATION 403
15 BINAURAL AND BILATERAL CONSIDERATIONS IN HEARING AID FITTING 430
16 SPECIAL HEARING AID ISSUES FOR CHILDREN 469
17 CROS, BONE-CONDUCTION, AND IMPLANTED HEARING AIDS 513
REFERENCES 537
INDEX 597
I I I
HTTP://D-NB.INFO/1023268841
IMAGE 2
DETAILED CONTENTS
PREFACE XVI
1 INTRODUCTORY CONCEPTS 1
1.1 PROBLEMS FACED BY PEOPLE WITH HEARING IMPAIRMENT 2
1.1.1 DECREASED AUDIBILITY 2
1.1.2 DECREASED DYNAMIC RANGE 2
1.1.3 DECREASED FREQUENCY RESOLUTION 3
1.1.4 DECREASED TEMPORAL RESOLUTION 5
1.1.5 PHYSIOLOGICAL ORIGINS OF HEARING LOSS 5
1.1.6 DEFICITS IN COMBINATION 6
1.2 ACOUSTIC MEASUREMENTS 8
1.2.1 BASIC PHYSICAL MEASURES 8
1.2.2 LINEAR AMPLIFIERS AND GAIN 9
1.2.3 SATURATION SOUND PRESSURE LEVEL 10
1.2.4 COUPLERS AND REAL EARS 11
1.3 TYPES OF HEARING AIDS 11
1.4 HISTORICAL PERSPECTIVE 14
1.4.1 THE ACOUSTIC ERA 15
1.4.2 THE CARBON ERA 15
1.4.3 THE VACUUM TUBE ERA 16
1.4.4 THE TRANSISTOR AND INTEGRATED CIRCUIT ERA 17
1.4.5 THE DIGITAL ERA 18
1.4.6 THE WIRELESS ERA 19
2 HEARING AID COMPONENTS 20
2.1 BLOCK DIAGRAMS 21
2.2 MICROPHONES 22
2.2.1 PRINCIPLE OF OPERATION 23
2.2.2 FREQUENCY RESPONSE OF MICROPHONES 23
2.2.3 MICROPHONE IMPERFECTIONS 24
2.2.4 DIRECTIONAL MICROPHONES 26
2.2.5 MICROPHONE LOCATION 28
2.3 AMPLIFIERS 28
2.3.1 AMPLIFIER TECHNOLOGY 28
2.3.2 PEAK CLIPPING AND DISTORTION 29
2.3.3 COMPRESSION AMPLIFIERS 30
2.4 DIGITAL CIRCUITS 31
2.4.1 ANALOG-TO-DIGITAL CONVERTERS 31
2.4.2 DIGITAL SIGNAL PROCESSORS 33
2.4.3 HARD-WIRED DIGITAL PROCESSING 33
2.4.4 GENERAL ARITHMETIC DIGITAL PROCESSING 34
2.4.5 SEQUENTIAL PROCESSING, BLOCK PROCESSING, AND HEARING AID DELAY 35
2.4.6 DIGITAL-TO-ANALOG CONVERTERS 36
IV
IMAGE 3
DETAILED CONTENTS * V
2.4.7 SPECIFICATIONS FOR DIGITAL HEARING AIDS 36
2.4.8 DIGITAL VERSUS ANALOG HEARING AIDS 38
2.5 FILTERS, TONE CONTROLS AND FILTER STRUCTURES 38
2.5.1 FILTERS 38
2.5.2 TONE CONTROLS 39
2.5.3 FILTER STRUCTURES 39
2.6 RECEIVERS 41
2.6.1 PRINCIPLE OF OPERATION 41
2.6.2 FREQUENCY RESPONSE OF RECEIVERS 41
2.7 ACOUSTIC DAMPERS 42
2.8 TELECOILS 43
2.9 AUDIO (ELECTRICAL) INPUT 44
2.10 REMOTE CONTROLS 44
2.11 BONE CONDUCTORS 46
2.12 BATTERIES 46
2.12.1 PRINCIPLE OF OPERATION 46
2.12.2 OPERATING VOLTAGE 47
2.12.3 CAPACITY AND PHYSICAL SIZE 47
2.12.4 RECHARGEABLE BATTERIES 49
2.13 CONCLUDING COMMENTS 49
3 HEARING AID SYSTEMS 50
3.1 CUSTOM AND MODULAR CONSTRUCTION 51
3.1.1 CUSTOM HEARING AIDS 51
3.1.2 MODULAR HEARING AIDS 52
3.1.3 SEMI-MODULAR, SEMI-CUSTOM HEARING AIDS 52
3.1.4 HEARING AID RELIABILITY 53
3.2 LINKED BILATERAL HEARING AIDS 53
3.3 PROGRAMMING THE HEARING AID 54
3.3.1 PROGRAMMERS, INTERFACES, AND SOFTWARE 54
3.3.2 MULTI-MEMORY OR MULTI-PROGRAM HEARING AIDS 55
3.3.3 PAIRED COMPARISONS 55
3.4 REMOTE SENSING AND TRANSMITTING HEARING AID SYSTEMS 56
3.5 INDUCTION LOOPS 56
3.5.1 FIELD UNIFORMITY AND DIRECTION 57
3.5.2 MAGNETIC FIELD STRENGTH 58
3.5.3 LOOP FREQUENCY RESPONSE 59
3.6 RADIO-FREQUENCY TRANSMISSION 62
3.6.1 FREQUENCY MODULATION 62
3.6.2 DIGITAL MODULATION TECHNIQUES 64
3.6.3 COUPLING TO THE HEARING AID 65
3.6.4 COMBINING WIRELESS AND LOCAL MICROPHONES 66
3.7 INFRA-RED TRANSMISSION 69
3.8 CLASSROOM SOUND-FIELD AMPLIFICATION 69
3.9 COMPARATIVE STRENGTHS AND WEAKNESSES OF MAGNETIC LOOPS,
RADIO-FREQUENCY WIRELESS SYSTEMS, INFRA-RED, AND SOUND-FIELD
AMPLIFICATION SYSTEMS 71
3.10 ASSISTIVE LISTENING DEVICES 73
IMAGE 4
VI ' HEARING AIDS
3.11 CONNECTIVITY AND CONVERGENCE 75
3.11.1 CONNECTING ELECTRONIC DEVICES TO HEARING AIDS 75
3.11.2 CONVERGENCE 77
3.11.3 INTERFERENCE BETWEEN MOBILE PHONES AND HEARING AIDS 78
3.12 CONCLUDING COMMENTS 80
4 ELECTROACOUSTIC PERFORMANCE AND MEASUREMENT 81
4.1 MEASURING HEARING AIDS IN COUPLERS AND EAR SIMULATORS 82
4.1.1 COUPLERS AND EAR SIMULATORS 82
4.1.2 TEST BOXES 85
4.1.3 MEASUREMENT SIGNALS 87
4.1.4 GAIN-FREQUENCY RESPONSE AND C)SPL90-FREQUENCY RESPONSE 88
4.1.5 INPUT-OUTPUT FUNCTIONS 90
4.1.6 DISTORTION 92
4.1.7 INTERNAL NOISE 93
4.1.8 MAGNETIC RESPONSE 94
4.1.9 ANSI, ISO AND IEC STANDARDS 95
4.2 REAL-EAR-TO-COUPLER-DIFFERENCE (RECD) 97
4.2.1 FACTORS AFFECTING RECD 97
4.2.2 MEASUREMENT OF RECD 99
4.2.3 RECD AND REDD 101
4.3 REAL-EAR AIDED GAIN (REAG) 101
4.3.1 POSITIONING THE PROBE FOR REAG MEASUREMENT 103
4.3.2 RELATIONSHIP BETWEEN REAG, COUPLER GAIN AND EAR SIMULATOR GAIN 105
4.3.3 DETECTING INCORRECT AIDED MEASUREMENTS 106
4.4 INSERTION GAIN 107
4.4.1 POSITIONING THE PROBE FOR INSERTION GAIN MEASUREMENT 108
4.4.2 RELATIONSHIP BETWEEN INSERTION GAIN, COUPLER GAIN AND EAR
SIMULATOR GAIN 109
4.4.3 DETECTING INCORRECT INSERTION GAIN MEASUREMENTS 111
4.4.4 ACCURACY OF INSERTION GAIN MEASUREMENTS 111
4.5 PRACTICAL ISSUES IN REAL-EAR TESTING 111
4.5.1 PROBE CALIBRATION 111
4.5.2 CONTROL MICROPHONES 112
4.5.3 EFFECTS OF WAX 113
4.5.4 CONTAMINATION BY BACKGROUND NOISE 113
4.5.5 HEARING AID SATURATION 114
4.5.6 LOUDSPEAKER ORIENTATION 114
4.5.7 MEASUREMENT SIGNAL CHARACTERISTICS 115
4.6 AIDED THRESHOLD TESTING AND FUNCTIONAL GAIN 116
4.7 FEEDBACK IN HEARING AIDS 118
4.7.1 THE FEEDBACK MECHANISM 118
4.7.2 EFFECTS OF FEEDBACK ON SOUND QUALITY 119
4.7.3 PROBE-TUBE MEASUREMENTS AND FEEDBACK 120
4.8 TROUBLESHOOTING FAULTY HEARING AIDS 121
4.9 CONCLUDING COMMENTS 126
IMAGE 5
DETAILED CONTENTS VII
5 HEARING AID EARMOLDS, EARSHELLS AND COUPLING SYSTEMS 127
5.1 EARMOLD, EARSHELL AND CANAL FITTING PHYSICAL STYLES 130
5.1.1 BTE EARMOLD STYLES 130
5.1.2 ITE, ITC, AND CIC EARSHELL STYLES 132
5.2 OVERVIEW OF EARMOLD, EARSHELL AND CANAL FITTING ACOUSTICS 134
5.3 VENTING 134
5.3.1 EFFECTS OF VENTS ON HEARING AID GAIN AND OSPL90 136
5.3.2 VENTING AND THE OCCLUSION EFFECT 140
5.3.3 EFFECTS OF VENTS AND LEAKS ON FEEDBACK OSCILLATIONS 144
5.3.4 INTERACTION OF VENTS WITH DIGITAL SIGNAL PROCESSING ALGORITHMS 146
5.3.5 PARALLEL VERSUS Y (OR DIAGONAL) VENTS 147
5.3.6 OPEN-CANAL FITTINGS IN SUMMARY 148
5.4 THE SOUND BORE: TUBING, HORNS AND CONSTRICTIONS 149
5.4.1 ACOUSTIC HORNS AND CONSTRICTIONS 151
5.4.2 TUBING INSERTION DEPTH 154
5.5 DAMPERS 155
5.6 SPECIFIC TUBING, DAMPING AND VENTING CONFIGURATIONS 156
5.7 PROCEDURE FOR SELECTING EARMOLD AND EARSHELL ACOUSTICS 156
5.8 EAR IMPRESSIONS 158
5.8.1 STANDARD EAR IMPRESSION TECHNIQUES 158
5.8.2 EAR IMPRESSION TECHNIQUES FOR CICS AND HIGH-GAIN HEARING AIDS 160
5.8.3 EAR IMPRESSION MATERIALS 162
5.9 EARMOLDS AND EARSHELLS 163
. 5.9.1 EARMOLD AND EARSHELL CONSTRUCTION 163
5.9.2 MATERIALS FOR EARMOLDS AND EARSHELLS 164
5.9.3 INSTANT EARMOLDS AND HEARING AIDS 167
5.9.4 MODIFYING AND REPAIRING EARMOLDS AND EARSHELLS 167
5.10 CONCLUDING COMMENTS 169
6 COMPRESSION SYSTEMS IN HEARING AIDS 170
6.1 COMPRESSION'S MAJOR ROLE: REDUCING THE SIGNAL'S DYNAMIC RANGE 171
6.2 BASIC CHARACTERISTICS OF A COMPRESSOR 172
6.2.1 DYNAMIC COMPRESSION CHARACTERISTICS: ATTACK AND RELEASE TIMES 172
6.2.2 STATIC COMPRESSION CHARACTERISTICS 175
6.2.3 INPUT AND OUTPUT CONTROL 178
6.2.4 MULTICHANNEL COMPRESSION 179
6.3 RATIONALES FOR USE OF COMPRESSION 180
6.3.1 AVOIDING DISCOMFORT, DISTORTION AND DAMAGE 180
6.3.2 REDUCING INTER-SYLLABIC AND INTER-PHONEMIC INTENSITY DIFFERENCES
181
6.3.3 REDUCING DIFFERENCES IN LONG-TERM LEVEL 182
6.3.4 INCREASING SOUND COMFORT 183
6.3.5 NORMALIZING LOUDNESS 184
6.3.6 MAXIMIZING INTELLIGIBILITY 186
6.3.7 REDUCING NOISE 186
6.3.8 EMPIRICAL APPROACHES 189
6.4 COMBINATIONS OF COMPRESSORS IN HEARING AIDS 190
6.5 BENEFITS AND DISADVANTAGES OF DIFFERENT COMPRESSION SYSTEMS 190
IMAGE 6
VIII HEARING AIDS
6.5.1 COMPRESSION RELATIVE TO LINEAR AMPLIFICATION 191
6.5.2 THE BENEFITS OF MULTICHANNEL RELATIVE TO SINGLE-CHANNEL
COMPRESSION 194
6.5.3 SLOW VERSUS FAST COMPRESSION 196
6.6 CONCLUDING COMMENTS 197
7 DIRECTIONAL MICROPHONES AND ARRAYS 198
7.1 DIRECTIONAL MICROPHONE TECHNOLOGY 199
7.1.1 FIRST-ORDER SUBTRACTIVE DIRECTIONAL MICROPHONES 199
7.1.2 ADDITIVE DIRECTIONAL ARRAYS 204
7.1.3 COMPLEX DIRECTIONAL ARRAYS 206
7.1.4 BILATERAL DIRECTIVITY 213
7.2 QUANTIFYING DIRECTIVITY 215
7.2.1 2D AND 3D DIRECTIVITY INDEX 215
7.2.2 AI-DI 217
7.3 DIRECTIONAL BENEFIT 218
7.3.1 IMPACT OF LISTENING ENVIRONMENT 219
7.3.2 OBJECTIVE BENEFIT IN THE CLINIC AND SELF REPORTED BENEFIT IN REAL
LIFE 221
7.3.3 INTERACTION OF DIRECTIVITY WITH OTHER TECHNOLOGIES 222
7.3.4 DISADVANTAGES OF DIRECTIVITY 223
7.3.5 CANDIDATES FOR DIRECTIONAL MICROPHONES 223
7.3.6 EVALUATION OF DIRECTIONAL MICROPHONES IN THE CLINIC 224
7.4 CONCLUDING COMMENTS 225
8 ADVANCED SIGNAL PROCESSING SCHEMES 226
8.1 ADAPTIVE NOISE REDUCTION 227
8.1.1 ADAPTIVE NOISE REDUCTION TECHNOLOGY 227
8.1.2 ADAPTIVE NOISE REDUCTION BENEFITS 232
8.1.3 IMPULSE NOISE REDUCTION 233
8.2 FEEDBACK REDUCTION 234
8.2.1 FEEDBACK REDUCTION BY GAIN-FREQUENCY RESPONSE CONTROL 234
8.2.2 FEEDBACK REDUCTION BY PHASE CONTROL 235
8.2.3 FEEDBACK REDUCTION BY FEEDBACK PATH CANCELLATION 236
8.2.4 FEEDBACK REDUCTION BY FREQUENCY SHIFTING 238
8.2.5 FEEDBACK REDUCTION SYSTEMS IN COMBINATION 238
8.3 FREQUENCY LOWERING 239
8.3.1 FREQUENCY LOWERING RULES 239
8.3.2 FREQUENCY LOWERING TECHNIQUES 240
8.3.3 COMMERCIALLY AVAILABLE FREQUENCY LOWERING SCHEMES 242
8.3.4 FREQUENCY LOWERING, SPEECH INTELLIGIBILITY AND CANDIDACY 242
8.4 SPEECH CUE ENHANCEMENT 245
8.5 OTHER SIGNAL PROCESSING SCHEMES 247
8.6 CONCLUDING COMMENTS 253
9 ASSESSING CANDIDACY FOR HEARING AIDS 255
9.1 FACTORS AFFECTING THE LOWER LIMIT OF AIDABLE HEARING LOSS 258
9.1.1 ATTITUDE AND MOTIVATION 258
9.1.2 PURE TONE LOSS AND AUDIOGRAM CONFIGURATION 261
IMAGE 7
DETAILED CONTENTS IX
9.1.3 SPEECH IDENTIFICATION ABILITY 263
' - ,9.1.4 SELF REPORTED DISABILITY 263
9.1.5 ACCEPTANCE OF NOISE 264
9.1.6 LISTENING ENVIRONMENT, NEEDS AND EXPECTATIONS 265
9.1.7 STIGMA AND COSMETIC CONCERNS 268
9.1.8 MANIPULATION AND MANAGEMENT 269
9.1.9 AGE 270
9.1.10 PERSONALITY 271
9.1.11 CENTRAL AUDITORY PROCESSING DISORDERS 272
9.1.12 TINNITUS 272
9.1.13 FACTORS IN COMBINATION 273
9.1.14 COUNSELING THE UNWILLING PATIENT: SOME EXAMPLES 274
9.2 THE UPPER LIMIT OF AIDABLE HEARING LOSS 278
9.2.1 POOR SPEECH IDENTIFICATION ABILITY 278
9.2.2 HEARING AIDS OR COCHLEAR IMPLANTS? 279
9.2.3 HEARING AIDS AND COCHLEAR IMPLANTS: BIMODAL AND HYBRID /
ELECTROACOUSTIC STIMULATION 280
9.2.4 HEARING AIDS OR TACTILE AIDS? 283
9.3 MEDICALLY RELATED CONTRA-INDICATIONS TO HEARING AID FITTING 284
9.4 CONCLUDING COMMENTS 284
10 PRESCRIBING HEARING AID AMPLIFICATION 286
10.1 GENERAL CONCEPTS BEHIND A PRESCRIPTIVE APPROACH AND A BRIEF HISTORY
287
10.2 GAIN AND FREQUENCY RESPONSE PRESCRIPTION FOR LINEAR AMPLIFICATION
290
10.2.1 POGO 290
10.2.2 NAL 290
10.2.3 DSL 292
10.2.4 EXAMPLES AND COMPARISONS: POGO II, NAL-RP AND DSL 294
10.3 DIFFICULT ISSUES IN PRESCRIPTION 297
10.3.1 ACCLIMATIZATION AND ADAPTATION TO GAIN AND FREQUENCY RESPONSE 297
10.3.2 PREFERRED LOUDNESS 298
10.3.3 DEAD REGIONS 298
10.3.4 SEVERE HEARING LOSS, EFFECTIVE AUDIBILITY AND HIGH-FREQUENCY
AMPLIFICATION 301
10.3.5 PRESCRIBING COMPRESSION THRESHOLDS 304
10.3.6 NEED FOR ACCURACY IN PRESCRIPTION 306
10.4 GAIN, FREQUENCY RESPONSE, AND INPUT-OUTPUT FUNCTIONS FOR NON-LINEAR
AMPLIFICATION 307
10.4.1 LGOB 308
10.4.2 IHAFF/CONTOUR 308
10.4.3 SCALADAPT 309
10.4.4 FIG6 310
10.4.5 DSL[I/O] AND DSLM[I/O] 311
10.4.6 NAL-NL1 AND NAL-NL2 313
10.4.7 CAMREST, CAMEQ AND CAMEQ2-HF 315
10.4.8 COMPARISON OF PROCEDURES 315
10.5 ALLOWING FOR CONDUCTIVE AND MIXED HEARING LOSSES 319
10.6 SELECTING OPTIONS FOR MULTI-MEMORY HEARING AIDS 321
10.6.1 MUSIC PROGRAMS 322
10.6.2 CANDIDATES FOR MULTI-MEMORY HEARING AIDS 322
IMAGE 8
X HEARING AIDS
10.7 PRESCRIBING OSPL90 323
10.7.1 GENERAL PRINCIPLES: AVOIDING DISCOMFORT, DAMAGE AND DISTORTION
323
10.7.2 TYPE OF LIMITING: COMPRESSION OR PEAK CLIPPING 324
10.7.3 OSPL90 PRESCRIPTION PROCEDURES 324
10.7.4 PRESCRIBING OSPL90 AT DIFFERENT FREQUENCIES 329
10.7.5 OSPL90 FOR NON-LINEAR HEARING AIDS 331
10.7.6 OSPL90 FOR CONDUCTIVE AND MIXED LOSSES 331
10.8 EXCESSIVE AMPLIFICATION AND SUBSEQUENT HEARING LOSS 332
10.9 CONCLUDING COMMENTS 334
11 SELECTING, ADJUSTING AND VERIFYING HEARING AIDS 336
11.1 SELECTING HEARING AID STYLE: CIC, ITC, ITE, BTE, SPECTACLE AID, OR
BODY AID 337
11.2 SELECTING HEARING AID FEATURES 342
11.3 HEARING AID SELECTION AND ADJUSTMENT 346
11.4 ALLOWING FOR INDIVIDUAL EAR SIZE AND SHAPE IN THE COUPLER
PRESCRIPTION 349
11.5 VERIFYING AND ACHIEVING THE PRESCRIBED REAL-EAR RESPONSE 350
11.6 VERIFYING SIGNAL PROCESSING FEATURES 351
11.7 EVALUATING AND FINE-TUNING OSPL90 352
11.8 CONCLUDING COMMENTS 353
12 PROBLEM SOLVING AND FINE-TUNING 354
12.1 SOLVING COMMON PROBLEMS 355
12.1.1 MANAGEMENT DIFFICULTIES 355
12.1.2 EARMOLD OR EARSHELL DISCOMFORT 356
12.1.3 POOR EARMOLD OR EARSHELL RETENTION 357
12.1.4 OWN VOICE QUALITY AND OCCLUSION 357
12.1.5 FEEDBACK OSCILLATION 358
12.1.6 TONAL QUALITY 360
12.1.7 NOISE, CLARITY, AND LOUDNESS 362
12.2 SYSTEMATIC FINE-TUNING PROCEDURES 365
12.2.1 PAIRED COMPARISONS 365
12.2.2 ABSOLUTE RATING OF SOUND QUALITY 366
12.2.3 SYSTEMATIC SELECTION BY PAIRED COMPARISONS 367
12.2.4 ADAPTIVE PARAMETER ADJUSTMENT BY PAIRED COMPARISONS 369
12.2.5 ADAPTIVE FINE-TUNING BY ABSOLUTE RATING OF QUALITY 370
12.2.6 FINE-TUNING AT HOME WITH MULTI-MEMORY OR TRAINABLE HEARING AIDS
372
12.3 CONCLUDING COMMENTS: FINE-TUNING IN PERSPECTIVE 372
13 PATIENT EDUCATION AND COUNSELING FOR HEARING AID WEARERS 374
13.1 UNDERSTANDING HEARING LOSS 376
13.2 ACQUIRING A HEARING AID 377
13.3 USING HEARING AIDS 378
13.4 ADJUSTING TO NEW EXPERIENCES WITH SOUND AND HEARING AIDS 379
13.5 CARE OF HEARING AIDS 383
13.6 HEARING STRATEGIES 384
13.6.1 OBSERVING THE TALKER AND SURROUNDINGS 384
13.6.2 MANIPULATING SOCIAL INTERACTIONS 385
IMAGE 9
DETAILED CONTENTS XI
13.6.3 MANIPULATING THE ENVIRONMENT 387
13.6.4 TEACHING HEARING STRATEGIES 388
13.7 INVOLVING FAMILIES AND FRIENDS 389
13.8 AUDITORY TRAINING 390
13.9 COMPUTER-BASED AUDITORY TRAINING AT HOME 392
13.10 AVOIDING HEARING AID-INDUCED HEARING LOSS 392
13.11 ASSISTIVE LISTENING DEVICES 393
13.12 COUNSELING SUPPORT 393
13.13 INTERACTING WITH DIFFERENT PERSONALITY STYLES 393
13.14 STRUCTURING APPOINTMENTS 395
13.14.1 THE ASSESSMENT APPOINTMENT(S) 396
13.14.2 THE FITTING APPOINTMENT(S) 396
13.14.3 THE FOLLOW-UP APPOINTMENT(S) 397
13.14.4 THE POWER OF GROUPS 398
13.15 CONCLUDING COMMENTS 401
14 ASSESSING THE OUTCOMES OF HEARING REHABILITATION 403
14.1 OUTCOME DOMAINS 404
14.2 SPEECH UNDERSTANDING TESTS 405
14.2.1 LIMITATIONS OF SPEECH TESTS TO ASSESS BENEFITS 405
14.2.2 ROLE OF SPEECH TESTING IN EVALUATING BENEFIT 406
14.3 SELF-REPORT QUESTIONNAIRES FOR ASSESSING BENEFIT 407
14.3.1 QUESTIONNAIRE METHODOLOGY 407
14.3.2 PRACTICAL SELF-REPORT MEASURES 411
14.4 MEETING NEEDS AND GOALS 414
14.5 ASSESSING USAGE, PROBLEMS, AND SATISFACTION 417
14.6 THE INTERNATIONAL OUTCOMES INVENTORY FOR HEARING AIDS (IOI-HA) 421
14.7 CHANGES IN OUTCOMES WITH TIME AFTER FITTING 423
14.8 IMPACT OF HEARING LOSS AND HEARING AIDS ON HEALTH-RELATED QUALITY
OF LIFE 425
14.8.1 EFFECT OF HEARING LOSS ON HEALTH-RELATED QUALITY OF LIFE 425
14.8.2 EFFECT OF HEARING AIDS ON HEALTH-RELATED QUALITY OF LIFE 425
14.9 CONCLUDING COMMENTS 428
15 BINAURAL AND BILATERAL CONSIDERATIONS IN HEARING AID FITTING 430
15.1 BINAURAL EFFECTS IN LOCALIZATION 432
15.1.1 LOCALIZATION CUES IN NORMAL HEARING 432
15.1.2 EFFECTS OF HEARING LOSS ON LOCALIZATION 435
15.2 BINAURAL EFFECTS IN DETECTION AND RECOGNITION 436
15.2.1 HEAD DIFFRACTION EFFECTS 437
15.2.2 BINAURAL SQUELCH IN NOISE 438
15.2.3 BINAURAL REDUNDANCY 440
15.2.4 BINAURAL LOUDNESS SUMMATION 441
15.3 ADVANTAGES OF BILATERAL FITTINGS 442
15.3.1 SPEECH INTELLIGIBILITY 442
15.3.2 LOCALIZATION 444
15.3.3 SOUND QUALITY 448
IMAGE 10
XII HEARING AIDS
15.3.4 AVOIDING LATE-ONSET AUDITORY DEPRIVATION 448
15.3.5 SUPPRESSION OF TINNITUS 450
15.3.6 MISCELLANEOUS ADVANTAGES 450
15.4 DISADVANTAGES OF BILATERAL FITTINGS 450
15.4.1 COST 450
15.4.2 BINAURAL INTERFERENCE 451
15.4.3 SELF-IMAGE 453
15.4.4 MISCELLANEOUS DISADVANTAGES 453
15.5 TESTS OF BILATERAL ADVANTAGE 454
15.5.1 BIAS IN CHOOSING THE REFERENCE EAR FOR THE UNILATERAL CONDITION
455
15.5.2 THE SENSITIVITY OF SPEECH TESTS FOR ASSESSING BILATERAL ADVANTAGE
455
15.5.3 ROLE FOR SPEECH TESTS IN ASSESSING BILATERAL ADVANTAGE 456
15.5.4 LOCALIZATION TESTS 458
15.6 FITTING ASYMMETRICAL HEARING LOSSES 458
15.6.1 BILATERAL VERSUS UNILATERAL FITTINGS FOR ASYMMETRICAL LOSSES 458
15.6.2 BETTER EAR VERSUS POORER EAR FOR UNILATERAL FITTINGS 460
15.6.3 ALTERNATIVES: FM AND CROS 462
15.7 DECIDING ON BILATERAL VERSUS UNILATERAL FITTINGS 462
15.8 EFFECT OF BILATERAL VERSUS UNILATERAL FITTING ON ELECTROACOUSTIC
PRESCRIPTIONS 466
15.9 CONCLUDING COMMENTS 467
16 SPECIAL HEARING AID ISSUES FOR CHILDREN 469
16.1 SENSORY EXPERIENCE, SENSORY DEPRIVATION, AND CANDIDACY FOR HEARING
AIDS 470
16.1.1 BINAURAL STIMULATION 470
16.1.2 UNILATERAL LOSS 471
16.1.3 SLIGHT AND MILD HEARING LOSS 473
16.1.4 COCHLEAR IMPLANTATION 473
16.1.5 AUDITORY NEUROPATHY SPECTRUM DISORDER 474
16.2 ASSESSMENT OF HEARING LOSS 475
16.2.1 FREQUENCY-SPECIFIC AND EAR-SPECIFIC ASSESSMENT 475
16.2.2 SMALL EARS AND CALIBRATION ISSUES 477
16.2.3 AUDITORY PROCESSING DISORDERS 478
16.2.4 MISCELLANEOUS ISSUES IN ASSESSMENT 479
16.3 HEARING AID AND EARMOLD STYLES 479
16.3.1 HEARING AID STYLE 479
16.3.2 EARMOLDS 480
16.4 PRESCRIBING AMPLIFICATION FOR CHILDREN 481
16.4.1 SPEECH IDENTIFICATION ABILITY AND AMPLIFICATION REQUIREMENTS 481
16.4.2 THRESHOLD-BASED VERSUS LOUDNESS-BASED PROCEDURES 485
16.4.3 ALLOWING FOR SMALL EAR CANALS 485
16.4.4 SIGNAL PROCESSING FEATURES 490
16.4.5 ASSISTIVE LISTENING DEVICES (ALDS) 493
16.5 VERIFYING REAL-EAR PERFORMANCE 494
16.6 EVALUATING AIDED PERFORMANCE 495
16.6.1 SPEECH TESTS 495
16.6.2 PAIRED-COMPARISON TESTS 496
16.6.3 EVALUATION OF DISCOMFORT 497
IMAGE 11
DETAILED CONTENTS XIII
16.6.4 SUBJECTIVE REPORT MEASURES 498
. 16.6.5 ARTICULATION INDEX OR SPEECH INTELLIGIBILITY INDEX (SLL) 500
16.6.6 EVOKED CORTICAL RESPONSES 502
16.6.7 SPEECH PRODUCTION AND LANGUAGE ACQUISITION 505
16.7 HELPING PARENTS 505
16.8 HEARING HABILITATION GOALS 507
16.8.1 GOALS AND STRATEGIES FOR INFANTS 508
16.8.2 GOALS AND STRATEGIES FOR TODDLERS 509
16.8.3 GOALS AND STRATEGIES FOR PRE-SCHOOLERS 509
16.8.4 GOALS AND STRATEGIES FOR PRIMARY SCHOOL CHILDREN 510
16.9 TEENAGERS AND COSMETIC CONCERNS 510
16.10 SAFETY ISSUES 511
16.11 CONCLUDING COMMENTS 512
17 CROS, BONE-CONDUCTION, AND IMPLANTED HEARING AIDS 513
17.1 CROS HEARING AIDS 514
17.1.1 SIMPLE CROS AIDS 514
17.1.2 BILATERAL CROS (BICROS) AIDS 518
17.1.3 STEREO CROS (CRIS-CROS) AIDS 519
17.1.4 TRANSCRANIAL CROS AIDS 519
17.2 BONE-CONDUCTION HEARING AIDS 520
17.2.1 APPLICATIONS OF BONE-CONDUCTION HEARING AIDS 520
17.2.2 BONE-CONDUCTION HEARING AID OUTPUT CAPABILITIES 521
17.2.3 PRESCRIBING, ADJUSTING AND VERIFYING ELECTROACOUSTIC
CHARACTERISTICS FOR BONE-CONDUCTION HEARING AIDS 522
17.2.4 DISADVANTAGES OF BONE-CONDUCTION HEARING AIDS 525
17.3 BONE-ANCHORED HEARING AIDS 526
17.3.1 BAHAS FOR UNILATERAL CONDUCTIVE OR MIXED HEARING LOSS 527
17.3.2 BILATERAL BAHAS FOR BILATERAL CONDUCTIVE OR MIXED HEARING LOSS
528
17.3.3 BAHAS FOR SINGLE-SIDED SENSORINEURAL DEAFNESS 528
17.3.4 COMPLICATIONS WITH BAHAS 529
17.4 MIDDLE-EAR IMPLANTABLE HEARING AIDS 529
17.4.1 OUTPUT TRANSDUCERS 530
17.4.2 MICROPHONES 531
17.4.3 COMPLETE SYSTEMS 531
17.4.4 CANDIDACY AND BENEFITS 534
17.4.5 COMPLICATIONS WITH MIDDLE-EAR IMPLANTS 535
17.5 CONCLUDING COMMENTS 535
REFERENCES 537
INDEX 597 |
| any_adam_object | 1 |
| author | Dillon, Harvey |
| author_facet | Dillon, Harvey |
| author_role | aut |
| author_sort | Dillon, Harvey |
| author_variant | h d hd |
| building | Verbundindex |
| bvnumber | BV040509530 |
| classification_rvk | YN 6511 ZN 6800 |
| ctrlnum | (OCoLC)803977183 (DE-599)DNB1023268841 |
| dewey-full | 617.89 |
| dewey-hundreds | 600 - Technology (Applied sciences) |
| dewey-ones | 617 - Surgery & related medical specialties |
| dewey-raw | 617.89 |
| dewey-search | 617.89 |
| dewey-sort | 3617.89 |
| dewey-tens | 610 - Medicine and health |
| discipline | Elektrotechnik / Elektronik / Nachrichtentechnik Medizin |
| edition | 2. ed. |
| format | Book |
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| id | DE-604.BV040509530 |
| illustrated | Illustrated |
| indexdate | 2024-08-21T00:16:35Z |
| institution | BVB |
| isbn | 9781604068108 1604068108 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-025356090 |
| oclc_num | 803977183 |
| open_access_boolean | |
| owner | DE-355 DE-BY-UBR DE-92 DE-29T DE-1043 |
| owner_facet | DE-355 DE-BY-UBR DE-92 DE-29T DE-1043 |
| physical | XVI, 608 S. Ill., graph. Darst. 27 cm |
| publishDate | 2012 |
| publishDateSearch | 2012 |
| publishDateSort | 2012 |
| publisher | Boomerang Press Thieme |
| record_format | marc |
| spelling | Dillon, Harvey Verfasser aut Hearing aids Harvey Dillon 2. ed. Sydney Boomerang Press 2012 Stuttgart ; New York, NY Thieme XVI, 608 S. Ill., graph. Darst. 27 cm txt rdacontent n rdamedia nc rdacarrier Literaturangaben Hörgerät (DE-588)4025412-4 gnd rswk-swf Anpassung (DE-588)4128128-7 gnd rswk-swf Hörgerät (DE-588)4025412-4 s Anpassung (DE-588)4128128-7 s DE-604 X:MVB text/html http://deposit.dnb.de/cgi-bin/dokserv?id=4054915&prov=M&dok_var=1&dok_ext=htm Inhaltstext DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025356090&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Dillon, Harvey Hearing aids Hörgerät (DE-588)4025412-4 gnd Anpassung (DE-588)4128128-7 gnd |
| subject_GND | (DE-588)4025412-4 (DE-588)4128128-7 |
| title | Hearing aids |
| title_auth | Hearing aids |
| title_exact_search | Hearing aids |
| title_full | Hearing aids Harvey Dillon |
| title_fullStr | Hearing aids Harvey Dillon |
| title_full_unstemmed | Hearing aids Harvey Dillon |
| title_short | Hearing aids |
| title_sort | hearing aids |
| topic | Hörgerät (DE-588)4025412-4 gnd Anpassung (DE-588)4128128-7 gnd |
| topic_facet | Hörgerät Anpassung |
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