ISO 226:1961
Normal equal-loudness contours for pure tones and normal threshold of hearing under free field listening conditions

Заменен на ISO 226(1987.05)
 

8 страниц

Завершение срока действия 01.05.1987
Опубликован 01.12.1961

Normal equal-loudness contours for pure tones and normal threshold of hearing under free field listening conditions