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IEC – The company IEC is world-leading organization, which creates and issues International standards for all electrical, electronic and other related technologies known generally as electro-technologies. Wherever, there is electricity and electronics you can find the company IEC, which promotes the safety and performance, the environment, electrical energy efficiency and renewable energy. The company IEC also administers conformity assessment systems, which certify that the equipment, systems or components comply with International Standards of this company.
Corrigendum 1: Sound system equipment - Part 16: Objective rating of speech intelligibility by speech transmission index
(Corrigendum 1: Equipements pour systemes electroacoustiques - Partie 16: Evaluation objective de l´intelligibilite de la parole au moyen de l´indice de transmission de la parole)
Correction published on 7.7.2025
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Sound system equipment. Part 17: Standard volume indicators
(Equipements pour systemes electroacoustiques. Partie 17: Indicateurs de volume normalises)
Standard published on 30.10.1990
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Corrigendum 1 - Sound system equipment. Part 17: Standard volume indicators
(Corrigendum 1 - Equipements pour systemes electroacoustiques. Partie 17: Indicateurs de volume normalises)
Correction published on 1.9.1991
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Sound system equipment - Part 18: Peak programme level meters -Digital audio peak level meter
(Equipements pour systemes electroacoustiques - Partie 18: Appareilsde mesure des cretes de modulation - Indicateur de niveau de cretede signaux audionumeriques)
Standard published on 22.11.1995
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Sound system equipment. Part 2: Explanation of general terms and calculation methods
(Equipements pour systemes electroacoustiques. Deuxieme partie: Explication des termes generaux et methodes de calcul)
Standard published on 30.6.1987
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Amendment 1 - Sound system equipment. Part 2: Explanation of general terms and calculation methods
(Amendement 1 - Equipements pour systemes electroacoustiques. Deuxieme partie: Explication des termes generaux et methodes de calcul)
Change published on 28.5.1991
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Sound system equipment - Part 21: Acoustical (output-based) measurements
(Equipements pour systemes electroacoustiques – Partie 21 : Mesures acoustiques (basees sur la sortie))
Standard published on 7.11.2018
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Sound system equipment - Part 22: Electrical and mechanical measurements on transducers
(Equipements pour systemes electroacoustiques - Partie 22: Mesurages electriques et mecaniques sur transducteurs)
Standard published on 24.9.2020
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Sound system equipment - Part 23: TVs and monitors - Loudspeaker systems
(Equipements pour systemes electroacoustiques - Partie 23: Televiseurs et moniteurs - Systemes de haut-parleurs)
Standard published on 24.2.2023
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Sound system equipment - Part 24: Headphones and earphones - Active acoustic noise cancelling characteristics
(Equipements pour systemes electroacoustiques - Partie 24: Casques et ecouteurs - Caracteristiques d´annulation active du bruit acoustique)
Standard published on 30.11.2023
Selected format:Latest update: 2025-08-10 (Number of items: 2 211 925)
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