CSD313L_OuterEar_Narration

Ear inclined from superiorlateral to inclined

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ear Inclined from superiorlateral to Inclined inferiomedial. Acoustic Function (I) Acoustic Sound pressure gain: Sound measure changes between sound source and TM source Azimuth at horizontal plane Acoustic Functions (II) Acoustic Sound pressure gain – Effect of the pinna excluding concha: minimum. – Effect of the ear canal: resonates at 3000 Hz. – Effect of TM: high impedance at low frequency Effect and low impedance in the 1000 – 4000 Hz range range Acoustic Function (III) Acoustic Transfer functions for different parts of out ears Acoustic Function (IV) Acoustic Sound localization Sound – Cues for sound localization iintensity and phase (time) difference. ntensity Any problem for these two cues? Any – One main function for pinna Non-Auditory functions Non-Auditory Protect TM and trap insects and dirt – Fine hairs lined with the epithelium of the outer Fine ear canal. ear – Cerumen (ear wax): secreted by the ceruminous Cerumen glands. glands. Summery of Outer Ear Summery Anatomy – Pinna – The external ear canal Physiology – Sound pressure gain Sound – Sound localization...
View Full Document

Ask a homework question - tutors are online