ISO 16:1975
Acoustics; Standard tuning frequency (Standard musical pitch)

Standard No.

ISO 16:1975

Release Date

1975

Published By

International Organization for Standardization (ISO)

Latest

ISO 16:1975

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.

ISO 16:1975 history

• 1975 ISO 16:1975 Acoustics; Standard tuning frequency (Standard musical pitch)