James,
I have no hard data, but would like to add an aside: Old guys with undamaged hair cells have the advantage that they can fully enjoy classical tonal music with its change from dissonant to consonant chords and back. According to the Helmholtz consonance theory that change is due to the presence or absence of beats generated by pairs of partial tones of almost equal frequencies. These partials tend to be soft, and their frequencies tend to be high.
Reinhart.
----Ursprüngliche Nachricht----
Von: James.Johnston@xxxxxxx
Datum: 23.09.2010 23:16
An: <AUDITORY@xxxxxxxxxxxxxxx>
Betreff: Re: Hearing Loss "False Positives"
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I would welcome some more hard data. The only data I have is knowing that some of my summer students the last few years I had any at Bell Labs had worse hearing than the 50 year old guy who has worked in the audio industry for 35 years has. Obviously, this is a limited sample, although the existence of loss is not merely anecdotal.
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James D. Johnston (jj@xxxxxxx)
CHIEF SCIENTIST - DTS, Inc. [...]
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Reinhart Frosch,
CH-5200 Brugg.
reinifrosch@xxxxxxxxxx .