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Is the Mac Studio noisy?

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What do we remember from the Mac Studio? Not its format, yet practical. Not its connectivity, yet generous. Not even its performances, which are nevertheless exceptional. No, what we remember is… its sound level! So Apple’s professional workstation would be ” noisy “. But what does that really mean? And above all, is it true?

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An (almost) standardized measure

When they ventured to mention the noise emitted by their machines, computer manufacturers generally contented themselves with a wet-finger measurement. The ECMA-109 standard of “declaration of the sound value of information and communication technology equipment” exists since 1985! Apple has been systematically declaring this value for seven years, and the industry has sided with the method of the Swiss standardization association.

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The standard defines how to calculate the sound power (Lw) from the measurement of the sound pressure (Lp) with a sound level meter. Sound pressure includes surrounding noise, a “soundscape” reduced to nothing in anechoic chambers. The evaluation of acoustic power takes into account the capacities of the human ear through weighting curves defined by standard IEC 61672-1:

  • C-weighting used with high sound pressure level (> 80 dB SPL), where the ear is more sensitive to low frequencies;
  • B weighting used with an average sound pressure level (60 dB SPL), notably used in the world of television;
  • the A-weighting used with a lower sound pressure level (40 dB SPL), where the ear is more sensitive to the middle frequencies corresponding to the human voice.
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