ISO 16:1975
Current
The latest, up-to-date edition.
Acoustics — Standard tuning frequency (Standard musical pitch)
Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users
English, French
01-01-1975
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.
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