ABG - Air-Bone Gap
AC - Air Conduction
ACA - American Conference of Audioprosthology
AD - Right Ear (auris dextra)
A/D - Analog-to-Digital
AGC - Automatic Gain Control
AGCi - Input Compression
AGCo - Output Compression
AI-DI - Articulation Index-Directivity Index
AKS - Anti-Kickback Statute
ALD - Assistive Listening Device
ANSI - American National Standards Institute
APHAB - Abbreviated Profile of Hearing Aid Benefit
AR - Aural Rehabilitation
ARHL - Age Related Hearing Loss
AS - Left Ear (auris sinistra)
ASHA - Audio Streaming for Hearing Aids
AU - Both ears (auris unitas)
BAHA - Bone-Anchored Hearing Aid
BC - Bone Conduction
BiCROS - Bilateral Contralateral Routing of Signal
BSPL - Band Sound Pressure Level
BTE - Behind-the-Ear
CAST - Computer Assisted Speech Training
CATS - Computer Assisted Tracking Simulation
cc - Cubic Centimeters
CDC- Centers for Disease Control and Prevention
CI - Cochlear Implant
CIC - Completely-in-the-Canal
CK - Compression Kneepoint
CN - Cochlear Nucleas
CNT - Could Not Test
COSI - Client Oriented Scale of Improvement
CR - Compression Ratio
CROS - Contralateral Routing of Signal
CT - Compression Threshold
DAI - Direct Audio Input
D/A - Digital-to-Analog
daPa - decapascals
dB - Decibel
dB HL - Decibels Hearing Level
dB SL - Decibels Sensation Level
dB SPL - Decibels Sound Pressure Level
DI - Directivity Index
DNR - Digital Noise Reduction
DNT - Did not Test
DR - Dynamic Range
DSL I/O - Desired Sensation Level Input/Output
DSL v5.0 - Desired Sensation Level version 5
DSP - Digital Signal Processing
DTC - Direct-to-Consumer
ECHO - Expected Consequences of Hearing Aid Ownership
ECV - External Ear Canal Volume
EEC - External Ear Canal
EIN - Equivalent Input Noise
EM - Effective Masking
ENT - Ear-Nose-Throat
EPA - Environmental Protection Agency
FCA - False Claims Act
FCC - Federal Communications Commission
FDA - Food and Drug Administration
FM - Frequency Modulation
FMN - Facial Motor Nerves
FOG - Full-on-Gain
GHz - Gigahertz
HAT - Hearing Aid Test (box)
HF - High Frequency
HFA - High Frequency Average
HFA-FOG - High Frequency Average - Full On Gain
HHI - Hearing Handicap Inventory
HHIA - Hearing Handicap Inventory for Adults
HHIE - Hearing Handicap Inventory for Elderly
HHIE-S - Hearing Handicap Inventory for the Elderly, Screening
HHIE-SP - Hearing Handicap for the Elderly, Spouse
HINT - Hearing in Noise Test
HIPAA - Health Insurance Portability and Accountability Act
HIT - Hearing Aid Test (box)
HITECH - Health Information Technology for Economic and Clinical Health
HL - Hearing Level
HLD - High Level Disinfection
HS - Half Shell
HTL - Hearing Threshold Level
Hz - Hertz
IA - Interaural Attenuation
ICRA - International Collegium of Rehabilitative Audiology
IEC - International Electrotechnical Commission
IHAFF - Independent Hearing Aid Fitting Forum
IHC - Inner Hair Cell
IHS - International Hearing Society
IIC - Invisible-in-Canal
ILD - Interaural Level Difference
IOI-HA - International Outcome Inventory for Hearing Aids
IROS - Ipsilateral Routing of Signal
ISO - International Organization for Standardization
ISTS - International Speech Test Signal
ITC - In-the-Canal
ITD - Interaural Timing Difference
ITE - In-the-Ear
KHz - Kilohertz
LACE - Listening and Communication Enhancement
LDL - Loudness Discomfort Level
LLD - Low Level Disinfection
LTASS - Long-Term Average Speech Spectrum
mA - Milliampere
mAH - Milliampere Hours
MCL - Most Comfortable Loudness Level
MEMR - Middle Ear Muscle Reflex
MHz - Megahertz
mmho - millimho
MPO - Maximum Power Output
MVP - Mini Vent Plugs
NAL - National Acoustic Laboratories (Australia)
NAL-L - National Acoustic Laboratories-Linear
NAL-NL - National Acoustic Laboratories-Non-Linear
NAL-NL1 - (see above)
NAL-NL2 - (see above)
NAL-R - National Acoustic Laboratories-Revised
NBN - Narrowband Noise
NIHL - Noise Induced Hearing Loss
NOAH - software interface
NR - No Response
NTE - Non-Test Ear
NU-6 - Northwestern University Word List-6
OAE - Otoacoustic Emissions
OE - Occlusion Effect
ОНС - Outer Hair Cell
OSHA - Occupational Safety and Health Administration
OSPL90 - Output Sound Pressure Level with 90dB input
OTC - Over-the-counter
Pa - Pascals
PB - Phonetically Balanced
PB max - Maximum Performance with Phonetically Balanced Word List
PE - Pressure Equalization
PHI - Protected Health Information
PI - Performance Intensity
PMC - Point of Maximum Compliance
PMM - Probe Microphone Measurements
POGO - Prescription of Gain and Output
PPE - Personal Protective Equipment
PSAP - Personal Sound Amplification Product
PTA - Pure Tone Average
REAG - Real Ear Aided Gain
REAR 85/90 - Real Ear Aided Response at 85/90 dB
REAR - Real Ear Aided Response
RECD - Real Ear to Coupler Difference
REIG - Real Ear Insertion Gain
REIR - Real Ear Insertion Response
REM - Real Ear Measurements
REOG - Real Ear Occluded Gain
REOR - Real Ear Occluded Response
REUG - Real Ear Unaided Gain
REUR - Real Ear Unaided Response
RIC - Receiver-in-Canal
RIE - Receiver-in-the-Ear
RITE - Receiver-in-the-Ear
RTG - Reference Test Gain
RTS - Reference Test Setting
SADL - Satisfaction with Amplification in Daily Life
SAT - Speech Awareness Threshold
SAV - Select-a-Vent
SC - Static Compliance
SDS - Safety Data Sheet
SDT - Speech Detection Threshold
SIT - Speech Intelligibility Index
SIN - Speech in Noise
SL - Sensation Level
SNHL - Sensory/Neural Hearing Loss
SNR - Signal-to-Noise Ratio
SOAP - Subjective, Objective, Assessment, and Plan
SOC - Superior Olivary Complex
SP - Super Power
SPA - Special Purpose Average
SPIN - Speech Perception in Noise
SPLITS - Sound Pressure Level in an Inductive Telephone Simulator
SPL - Sound Pressure Level
SPRINT - Speech Recognition Interpretation
SRT - Speech Reception Threshold
SSD - Single Sided Deafness
TD - Threshold of Discomfort
TDH - Telephonic Dynamic Headphone (such as TDH-39 or TDH-49)
TE - Test Ear
THD - Total Harmonic Distortion
TK - Threshold Kneepoint
TM - Tympanic Membrane
TMFS - Telephone Magnetic Field Stimulator
TPP - Tympanometric Peak Pressure
TTS - Temporary Threshold Shift
TW - Tympanometric Width
UCL - Uncomfortable Loudness Level
VC - Volume Control
VO - Video Otoscopy
VU - Volume Units
WDRC - Wide Dynamic Range Compression
WNL - Within Normal Limits
WR - Word Recognition
WRS - Word Recognition Score