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Glossary

The NORAH glossary provides brief and clear explanations of technical terms and abbreviations. Can’t find the term you were looking for? Then simply get in touch with us via the contact form.

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Loudness
The Loudness is more a matter of perception. Two tones with the same Sound level but different frequency are often perceived as being differently loud. The measurement unit of loudness is the “phon” and the definition of phon is based on the subjective comparison of two sound events.

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