phon

ریشه

Derived from 'telephone', as Alexander Graham Bell, the inventor of the telephone, also developed the concept of the phon.

مثال

• The loudness of a sound is measured in phons.
• A quiet library may have a noise level of about 30 phons.
• The phon is a subjective unit, as it measures perceived loudness, not actual sound intensity.

ترکیب‌های رایج

Phon scale Phon measurement Phon level