చెవుడు: కూర్పుల మధ్య తేడాలు

}}

'''చెవుడు''', '''చెముడు''' లేదా '''చెవిటితనం''' (Deafness or Hearing impairment) అనగా [[శబ్దం|శబ్దాలను]] పూర్తిగా లేదా పాక్షికంగా వినలేకపోవడం.<ref name="def1">{{cite web|url=http://www.oafccd.com/factshee/fact59.htm|title=Speech and Language Terms and Abbreviations|accessdate=2006-12-02|website=|archive-url=https://web.archive.org/web/20090905152154/http://www.oafccd.com/factshee/fact59.htm|archive-date=2009-09-05|url-status=dead}}</ref>

 

[[Sound wave]]s vary in amplitude and in frequency. [[Amplitude]] is the sound wave's peak [[pressure]] variation. [[Frequency]] is the number of cycles per second of a [[sinusoidal]] component of a sound wave. Loss of the ability to detect some frequencies, or to detect low-amplitude sounds that an organism naturally detects, is a hearing impairment.