Sound localization with phase audiometry.

摘要: A 500 Hz pure tone is presented binaurally with earphones. The adjusted to give a midline impression at comfortable loudness level. An electronic variable time delay line unit and generator for randomizing the shift of phase lag signal right or left ear, respectively, are used. By shortening threshold recognition difference reached. At every test sequence first in center head without then delay. patient runs by indicating which ear heard. thus gradually reduced from μsec down value about 48 equal on ears normal-hearing subjects.The results audiometry subjects normal hearing different types losses good agreement sound localization tests free field. Phase seems be especial diagnosing retrocochlear ...