When, on the other hand, the vibrations are heard better by air-conduction, the lesion is in the sound-perceiving apparatus.    From Wordnik.com.  [Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition.] Reference

Most people with hearing loss can benefit from conventional air-conduction hearing aids, which work by amplifying sound passed along the ear canal to the eardrum making it vibrate.    From Wordnik.com.  [Medlogs - Recent stories] Reference

The tone produced by a vibrating tuning-fork is conducted to the nerve terminations in the labyrinth both through the air column in the external meatus (air-conduction), and through the cranial bones.    From Wordnik.com.  [Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition.] Reference

These courses are approved by the Council for Accreditation in Occupational Hearing Conservation (CAOHC) and are designed to train nursing, allied medical, and industrial personnel to perform pure-tone air-conduction hearing tests and participate in other components of workplace hearing conservation programs for noise-exposed workers.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference