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ISO 16:1975
Acoustics -- Standard tuning frequency (Standard musical pitch)
Media and price
| Price | Language | ||
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| CHF 38,00 | Add to basket | ||
| Paper | CHF 38,00 | Add to basket |
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.
