Specifies the relations existing between the sound pressure levels and frequencies of pure sinusoidal continuous tones in several conditions. These relations are expressed as curves and represent a fundamental property of the human auditory system.
ISO 226:1987Stage: 95.99
Got a question?
Check out our FAQs
+41 22 749 08 88
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)
Keep up to date with ISO
Sign up to our newsletter for the latest news, views and product information.