Abstract Preview

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
  • Edition : 1
    Number of pages : 1
  • :
    ISO/TC 43
  • 17.140.01
    Acoustic measurements and noise abatement in general

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