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Re: normal hearing 2

There 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@xxxxxxx

-----Original Message-----
From: AUDITORY Research in Auditory Perception [mailto:AUDITORY@xxxxxxxxxxxxxxx] On Behalf Of Bruno L. Giordano
Sent: Friday, February 24, 2006 5:20 AM
To: AUDITORY@xxxxxxxxxxxxxxx
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 

Thank you,

Bruno L. Giordano, PhD
Schulich School of Music, McGill University
555 Sherbrooke Street West
Montréal, QC H3A 1E3