Subject: Re: normal hearing 2 From: "Freed, Dan" <DFreed@xxxxxxxx> Date: Fri, 24 Feb 2006 10:50:10 -0800There seems to be some controversy on this point. See: Martin FN & Champlin CA (2000), "Reconsidering the limits of normal hearing", J Am Acad Audiol 11:64-66. Dan Freed Senior Engineer, Hearing Aid Research Lab House Ear Institute 2100 W. Third St. Los Angeles, CA 90057 USA Phone: +1-213-353-7084 Fax: +1-213-413-0950 Email: dfreed@xxxxxxxx -----Original Message----- From: AUDITORY Research in Auditory Perception [mailto:AUDITORY@xxxxxxxx On Behalf Of Bruno L. Giordano Sent: Friday, February 24, 2006 5:20 AM To: AUDITORY@xxxxxxxx Subject: normal hearing 2 Dear list, In a recent posting ("normal hearing", April 2005) I found mention of the criteria and of the ISO standards which define normal results for audiometric tests. In the summary posting it is mentioned that non-normal, by definition, is anything higher than 0 dB HL, and, again, that non-normal, probably in the field of clinical audiology, is anything below 25 dB HL (adults). Now, my question might seem quite recursive, but: is there a standard for deciding that the hearing of an individual is not standard? Thank you, Bruno ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Bruno L. Giordano, PhD CIRMMT Schulich School of Music, McGill University 555 Sherbrooke Street West Montréal, QC H3A 1E3 Canada