Metrologia e normalização
AES - Audio Engineering Society
,
Standards Committee
ANSI - American National Standards Institute
ASA - Acoustical Society of America
,
Acoustical Standards
CEN - The European Committee for Standardization
IEC - International Electrotechnical Commission
IEP - Instituto Electrotécnico Português
InMetro
,
Brasil
IPQ - Instituto Português da Qualidade
ISO - International Organization for Standardization
National Institute of Standards and Technology
,
Information Technology Laboratory
,
Manufacturing Engineering Laboratory
NPL - National Physical Laboratory
,
NPL Acoustics
NWML - National Weights and Measures Laboratory
OIML - International Organization of Legal Metrology
PTB - Physikalisch-Technische Bundesanstalt