Calibration of fixed sound field audiometry equipment

Calibration of fixed sound field audiometry equipment, Total:137 items.

The international standard classification for "Calibration of fixed sound field audiometry equipment" includes: Acoustics and acoustic measurements , Acoustics measurements and noise abatement in general , Other standards related to acoustics , Noise with respect to human beings , Noise emitted by machines and equipment , Radiographic equipment .

The Chinese standard classification for "Calibration of fixed sound field audiometry equipment" includes: Acoustic Measurement , Physics and Mechanics , Noise and vibration test methods , Medical ultrasound, laser, high-frequency instrument and equipment .

National Metrological Technical Specifications of the People's Republic of China

JJF 1191-2019 Calibration Specification for Acoustic Performance of Audiometry Rooms
JJF 1579-2016 Calibration Specification for Audiometric Equipment: Instruments for the Measurement of Auditory Evoked Potential
JJF 1289-2020 Calibration Specification of Audiometric Equipment:Instruments for the Measurement of Otoacoustic Emissions
JJF 1581-2016 Calibration Specification for Hand-held Sound Field Hearing Screening Equipments
JJF 1842-2020 Calibration Specification for Fixed Audiometric Equipment in Sound Field
JJF 1191-2008 Calibration Specification for Acoustic Performance of Audiometry Rooms

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 4854.4-1999 Acoustics-Reference zero for the calibration of audiometric equipment-Part 4：Reference levels for narrow-band masking noise
GB/T 4854.6-2014 Acoustics―Reference zero for the calibration of audiometric equipment―Part 6:Reference hearing threshold levels for test signals of short duration
GB/T 4854.7-1999 Acoustics-Reference zero for the calibration of audiometric equipment-Part 7：Reference threshold of hearing under free-field and diffuse-field listening conditions
GB/T 4854.8-2007 Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent threshold sound pressure levels for pure tone and circumaural earphones
GB/T 19888.1-2005 Acoustics—Stationary audible warning devices used outdoors—Part 1:Field measurements for determination of sound emission quantifies
GB/T 4854.7-2008 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
GB/T 4854.1-1999 Acoustics--Reference zero for the calibration of audiometric equipment--Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
GB/T 4854.9-2016 Acoustics—Reference zero for the calibration of audiometric equipment—Part 9: Preferred test conditions for the determination of reference hearing threshold levels
GB/T 4854.1-2004 Acoustics?Reference zero for the calibration of audiometric equipment?Part 1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones

未注明发布机构

DIN EN ISO 389-7 E:2019-12 Reference zero points for calibration of acoustic audiometric equipment Part 7: Reference hearing thresholds under free-field and diffuse-field hearing conditions (draft)
DIN EN ISO 389-7:1998 Acoustics – Reference zero for the calibration of audiometric equipment – Part 7: Reference threshold of hearing under free-Þeld and diffuse-Þeld listening conditions (ISO 389-7 : 1996)

国家药监局

YY/T 0865.2-2018 Ultrasonics―Hydrophones―Part 2:Calibration for ultrasonic fields up to 40 MHz

International Organization for Standardization (ISO)

ISO 389-7:2005 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
ISO 389:1975 Acoustics — Reference zero for the calibration of audiometric equipment
ISO 389-7:2005/Amd 1:2016 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions - Amendment 1: Reference threshold of hearing at 20 Hz and 18000 Hz under free-field l
ISO 389:1975/Add 2:1986 Acoustics — Reference zero for the calibration of audiometric equipment — Addendum 2
ISO 389:1975/Add 1:1983 Acoustics — Reference zero for the calibration of audiometric equipment — Addendum 1
ISO 389-7:1996 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
ISO 389-9:2009 Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels
ISO 389-7:2019 Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
ISO 389-8:2004 Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones
ISO 389-4:1994 Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise

SCC

BS EN ISO 389-7:2005+A1:2016 Acoustics. Reference zero for the calibration of audiometric equipment-Reference threshold of hearing under free-field and diffuse-field listening conditions
BS EN ISO 389-7:1998 Acoustics. Reference zero for the calibration of audiometric equipment-Reference threshold of hearing under free-field and diffuse-field listening conditions
BS EN ISO 389-7:2005 Acoustics. Reference zero for the calibration of audiometric equipment. Reference threshold of hearing under free-field and diffuse-field listening conditions
DANSK DS/ISO 389-7:2019 Acoustics – Reference zero for the calibration of audiometric equipment – Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
DANSK DS/EN ISO 389-7/A1:2005 Acoustics – Reference zero for the calibration of audiometric equipment – Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
DANSK DS/EN IEC 60565-1:2020 Underwater acoustics – Hydrophones – Calibration of hydrophones – Part 1: Procedures for free-field calibration of hydrophones
CEI EN IEC 60565-1:2020 Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration of hydrophones
NS-EN ISO 389-7:2019 Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019)
DANSK DS/EN ISO 389-7:2019 Acoustics – Reference zero for the calibration of audiometric equipment – Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019)
AENOR UNE-EN ISO 389-7:2021 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019)
AENOR UNE-EN ISO 389-7/A1:2006 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2005)
DIN EN IEC 60565-1:2021 Underwater acoustics – Hydrophones – Calibration of hydrophones – Part 1: Procedures for free-field calibration of hydrophones (IEC 60565-1:2020); German version EN IEC 60565-1:2020
BS 3191-2:1959 Specification for fixed playground equipment for schools-Rope equipment
DIN EN ISO 389-7/A1 E:2015 Draft Document - Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2005/DAM1:2015)
NS-EN ISO 389-7:1998 Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:1996)
DIN EN IEC 60565-1 E:2019 Draft Document - Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration (IEC 87/708/CDV:2019); German and English version prEN IEC 60565-1:2019
AS 1591.2:1987 Acoustics - Instrumentation for audiometry - Reference zero for the calibration of pure-tone audiometers
CEI EN 62127-2/A2:2008 Ultrasonics - Hydrophones Part 2: Calibration for ultrasonic fields up to 40 MHz
CEI EN 62127-2:2008 Ultrasonics - Hydrophones Part 2: Calibration for ultrasonic fields up to 40 MHz
DIN EN ISO 389-7:2020 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019); German version EN ISO 389-7:2019
DANSK DS/EN ISO 389-9:2009 Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels
DANSK DS/EN 60645-1:2017 Electroacoustics – Audiometric equipment – Part 1: Equipment for pure-tone and speech audiometry

European Committee for Standardization (CEN)

EN ISO 389:1995 Acoustics - Standard Reference Zero for the Calibration of Pure-Tone Air Conduction Audiometers ISO 389: 1991
EN ISO 389-7:2019 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019)
EN ISO 389-7:1998 Acoustics - Reference Zero for the Calibration of Audiometric Equipment - Part 7: Reference Threshold of Hearing under Free-Field and Diffuse-Field Listening Conditions ISO 389-7:1996
EN ISO 389-7:2005 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under freefield and diffuse-field listening conditions (Incorporates Amendment A1: 2016)
EN ISO 389-7:2005/A1:2016 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions - Amendment 1: Reference threshold of hearing at 20 Hz and 18000 Hz under free-field l
EN ISO 389-1:2000 Acoustics - Reference Zero for the Calibration of Audiometric Equipment - Part 1: Reference Equivalent Threshold Sound Pressure Levels for Pure Tones and Supra- aural Earphones
EN ISO 389-1:2018 Acoustics - Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones (ISO 389-1:2017)
CENELEC EN 62127-2-2007 Ultrasonics — Hydrophones — Part 2: Calibration for ultrasonic fields up to 40 MHz

Association Francaise de Normalisation

NF S30-007-7:1999 Acoustics. Reference zero for the calibration of audiometric equipment. Part 7 : reference threshold of hearing under free-field and diffuse-field listening conditions.
NF S30-007-7*NF EN ISO 389-7:2019 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7 : reference threshold of hearing under free-field and diffuse-field listening conditions
NF S30-007-7:2006 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7 : reference threshold of hearing under free-field and diffuse-field listening conditions.
NF EN IEC 60565-1:2020 Acoustique sous-marine - Hydrophones - Étalonnage des hydrophones - Partie 1 : procédures d'étalonnage en champ libre des hydrophones
NF S30-007-9*NF EN ISO 389-9:2009 Acoustics - Reference zero for the calibration of audiometric equipment - Part 9 : preferred test conditions for the determination of reference hearing threshold levels.
NF C97-915-1*NF EN IEC 60565-1:2020 Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1 : procedures for free-field calibration of hydrophones
NF EN ISO 389-7:2019 Acoustics - Zero reference for the calibration of audiometric equipment - Part 7: threshold reference level in free-field and diffuse-field listening conditions
NF C74-351-2*NF EN 62127-2:2008 Ultrasonics - Hydrophones - Part 2 : calibration for ultrasonic fields up to 40 MHz
NF S31-001-5*NF EN 60645-5:2005 Electroacoustics - Audiometric equipment - Part 5 : instruments for the measurement of aural acoustic impedance/admittance
NF EN 62127-2:2008 Ultrasons - Hydrophones - Partie 2 : étalonnage des champs ultrasoniques allant jusqu'à 40 MHz
NF S30-001-1*NF EN ISO 389-1:2018 Acoustics - Reference zero for the calibration of audiometric equipment - Part 1 : reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
NF EN ISO 389-9:2009 Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: recommended test conditions for determining threshold reference hearing levels
NF EN 60645-1:2017 Électroacoustique - Appareils audiométriques - Partie 1 : appareils pour l'audiométrie tonale et vocale

British Standards Institution (BSI)

BS EN ISO 389-7:2019 Acoustics. Reference zero for the calibration of audiometric equipment - Reference threshold of hearing under free-field and diffuse-field listening conditions
BS EN IEC 60565-1:2020 Underwater acoustics. Hydrophones. Calibration of hydrophones - Procedures for free-field calibration of hydrophones
BS EN ISO 389-7:2006 Acoustics - Reference zero for the calibration of audiometric equipment - Reference threshold of hearing under free-field and diffuse-field listening conditions
BS EN ISO 389-4:1999 Acoustics - Reference zero for the calibration of audiometric equipment - Reference levels for narrow-band masking noise
BS EN ISO 389-4:1995 Acoustics - Reference zero for the calibration of audiometric equipment - Reference levels for narrow-band masking noise
BS EN 62127-2:2007+A2:2017 Ultrasonics. Hydrophones - Calibration for ultrasonic fields up to 40 MHz
BS EN 62127-2:2008 Ultrasonics. Hydrophones. Calibration for ultrasonic fields up to 40 MHz
BS EN 60645-5:2005 Electroacoustics - Audiometric equipment - Instruments for the measurement of aural acoustic impedance/admittance
BS EN 62127-2:2007+A1:2013 Ultrasonics. Hydrophones. Calibration for ultrasonic fields up to 40 MHz
BS EN ISO 389-9:2009 Acoustics - Reference zero for the calibration of audiometric equipment - Preferred test conditions for the determination of reference hearing threshold levels
BS EN ISO 389-9:2010 Acoustics. Reference zero for the calibration of audiometric equipment. Preferred test conditions for the determination of reference hearing threshold levels
18/30355496 DC BS EN 60565-1. Underwater acoustics. Hydrophones. Calibration of hydrophones. Part 1. Procedures for free-field calibration
BS EN 60645-1:2017 Electroacoustics. Audiometric equipment. Equipment for pure-tone and speech audiometry
23/30434828 DC BS EN IEC 62127-2 Ultrasonics. Hydrophones - Part 2. Calibration for ultrasonic fields

Danish Standards Foundation

DS/EN ISO 389-7:2005 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
DS/EN ISO 389-4:1999 Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise
DS/EN ISO 389-2:1997 Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones
DS/EN ISO 389-8:2004 Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones
DS/EN ISO 389-9:2009 Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels
DS/EN ISO 389-1:2000 Acoustics - Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
DS/EN ISO 389-6:2007 Acoustics - Reference zero for the calibration of audiometric equipment - Part 6: Reference threshold of hearing for test signals of short duration

German Institute for Standardization

DIN EN ISO 389-7:2006 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2005); English version of DIN EN ISO 389-7:2006-04
DIN EN ISO 389-7:2020-06 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019); German version EN ISO 389-7:2019 / Note: DIN EN ISO 389-7 (2017-0...
DIN EN IEC 60565-1:2021-09 Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration of hydrophones (IEC 60565-1:2020); German version EN IEC 60565-1:2020 / Note: DIN EN 60565 (2007-08) remains valid alongside this standard u...
DIN EN 60645-5:2005 Electroacoustics - Audiometric equipment - Part 5: Instruments for the measurement of aural acoustic impedance/admittance (IEC 60645-5:2004); German version EN 60645-5:2005
DIN EN ISO 389-2:1996 Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones (ISO 389-2:1994); German version EN ISO 389-2:1996
DIN EN ISO 389-9:2009-12 Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO 389-9:2009); German version EN ISO 389-9:2009
DIN EN ISO 389-8:2004 Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones (ISO 389-8:2004); German version EN ISO 389-8:2004
DIN EN 60645-1:2018-08 Electroacoustics - Audiometric equipment - Part 1: Equipment for pure-tone and speech audiometry (IEC 60645-1:2017); German version EN 60645-1:2017 / Note: DIN EN 60645-1 (2015-11) remains valid alongside this standard until 2020-10-06.
DIN EN ISO 389-6:2007 Acoustics - Reference zero for the calibration of audiometric equipment - Part 6: Reference threshold of hearing for test signals of short duration (ISO 389-6:2007); English version of DIN EN ISO 389-6:2007-10

ES-UNE

UNE-EN ISO 389-7:2021 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2019)
UNE-EN IEC 60565-1:2020 Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration of hydrophones (Endorsed by Asociación Española de Normalización in August of 2020.)
UNE-EN 62127-2:2007/A1:2013 Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz (Endorsed by AENOR in May of 2013.)
UNE-EN 62127-2:2007 Ultrasonics - Hydrophones -- Part 2: Calibration for ultrasonic fields up to 40 MHz (Endorsed by AENOR in October of 2009.)
UNE-EN 60645-1:2017 Electroacoustics - Audiometric equipment - Part 1: Equipment for pure-tone and speech audiometry (Endorsed by Asociación Española de Normalización in November of 2017.)

GSO

BH GSO IEC 60565-1:2023 Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration of hydrophones
GSO IEC 60565-1:2022 Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration of hydrophones
OS GSO ISO 389-9:2015 Acoustics -- Reference zero for the calibration of audiometric equipment -- Part 9: Preferred test conditions for the determination of reference hearing threshold levels
BH GSO ISO 389-9:2017 Acoustics -- Reference zero for the calibration of audiometric equipment -- Part 9: Preferred test conditions for the determination of reference hearing threshold levels
BH GSO ISO 389-6:2017 Acoustics -- Reference zero for the calibration of audiometric equipment -- Part 6: Reference threshold of hearing for test signals of short duration
OS GSO ISO 389-6:2015 Acoustics -- Reference zero for the calibration of audiometric equipment -- Part 6: Reference threshold of hearing for test signals of short duration
GSO ISO 389-9:2015 Acoustics -- Reference zero for the calibration of audiometric equipment -- Part 9: Preferred test conditions for the determination of reference hearing threshold levels

European Committee for Electrotechnical Standardization（CENELEC）

EN IEC 60565-1:2020 Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration of hydrophones

International Electrotechnical Commission (IEC)

IEC 60565-1:2020 Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration of hydrophones
IEC 62127-2:2007+AMD1:2013+AMD2:2017 CSV Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz
IEC 60645-5:2004 Electroacoustics - Audiometric equipment - Part 5: Instruments for the measurement of aural acoustic impedance/admittance

AT-ON

ONORM EN 27566-1991 Acoustics - Standard reference zero for the c?libration of pure-tone bone conduction audiometers

AENOR

UNE-EN ISO 389-7:2006 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2005)

Lithuanian Standards Office

LST EN ISO 389-7:2006 Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions (ISO 389-7:2005)

RU-GOST R

GOST R ISO 389-7-2011 State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 7. Reference threshold of hearing under free-field and diffuse-field listening conditions

CEN - European Committee for Standardization

EN ISO 389-9:2009 Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels

KR-KS

KS I ISO 389-7-2020 Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions

Korean Agency for Technology and Standards (KATS)

KS I ISO 389-7:2014 Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under freefield and diffuse-field listening conditions
KS I ISO 389-7:2020 Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
KS C IEC 60645-2A-2022 Electroacoustics — Audiometric equipment — Part 2: Equipment for speech audiometry
KS C IEC 60645-5:2014 Electroacoustics－Audiometric equipment－Part 5：Instruments for the measurement of aural acoustic impedance/admittance
KS C IEC 60645-5:2007 Electroacoustics-Audiometric equipment-Part 5:Instruments for the measurement of aural acoustic impedance/admittance
KS I ISO 389-4:2003 Acoustics-Reference zero for the calibration of audiometric equipment-Part 4:Reference levels for narrow-band masking noise
KS C IEC 60645-2A-2017(2022) Electroacoustics — Audiometric equipment — Part 2: Equipment for speech audiometry

GOST

GOST R ISO 389-7-2023 State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 7. Reference threshold of hearing under free-field and diffuse-field listening conditions

PL-PKN

PN-EN IEC 60565-1-2021-02 E Underwater acoustics -- Hydrophones -- Calibration of hydrophones -- Part 1: Procedures for free-field calibration of hydrophones (IEC 60565-1:2020)

Standard Association of Australia （SAA）

AS ISO 389.1:2007 Acoustics - Reference zero for the calibration of audiometric equipment - Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
AS ISO 389.2:2007 Acoustics - Reference zero for the calibration of audiometric equipment - Reference equivalent threshold sound pressure levels for pure tones and insert earphones
AS IEC 60645.2:2002 Electroacoustics - Audiological equipment - Equipment for speech audiometry
AS IEC 60645.2:2002(R2014) Electroacoustic Audiology Equipment Speech Audiometry Equipment
AS IEC 60645.1:2024 Electroacoustics - Audiometric equipment, Part 1: Equipment for pure-tone and speech audiometry

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