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ISO 16:1975

Acoustics — Standard tuning frequency (Standard musical pitch)

Jan 1, 1975

General information

90.93     Sep 30, 2022

ISO

ISO/TC 43

International Standard

17.140.01  

French   English  

Buying

Published

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Scope

Specifies the frequency for the note A in the treble stave and shall be 440 Hz. Tuning and retuning shall be effected by instruments producing it within an accuracy of 0,5 Hz.

Life cycle

NOW

PUBLISHED
ISO 16:1975
90.93 Standard confirmed
Sep 30, 2022