[Various recordings of the german speech intelligibility test (DIN 45 621 recommendation) (author's transl)].
D000162:Acoustics; D001299:Audiometry; D005860:Germany, West; D006320:Hearing Tests / Q000379:methods*; D006801:Humans; D008037:Linguistics; D010700:Phonetics; D013060:Speech
Verschiedene Aufsprachen des Sprachverständnistestes nach DIN 45 621 ("Freiburger Test").