Status : Published (Under review)
This standard was last reviewed and confirmed in 2022. Therefore this version remains current.
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  • CHF40
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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 1975-01
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 1
  • Technical Committee :
    ISO/TC 43
    ICS :
    17.140.01 
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