High frequency sensitivity (Bob Stuart )

Subject: High frequency sensitivity
From:    Bob Stuart  <jrs(at)MERIDIAN.WIN-UK.NET>
Date:    Wed, 29 Mar 1995 06:59:09 LCL

Dear All We are currently involved in a debate about future digital audio carriers for high-quality sound. It is well-accepted that the current sampling rate of 44.1kHz is too low, I know a percentage of young listeners can hear to 24kHz. Sampling at 44.1kHz allows a 20kHz bandwidth with a 2kHz transition band. I have not found any hard evidence in the literature about aural sensitivity to supersonic or ultrasonic content. There is loose and anecdotal evidence in audio engineering that wider bandwidth helps, but this may to do with implementation rather than spl striking the ear-drum. Does anyone know any studies that point to frequencies > 20kHz affecting perception (maybe of transients rather than continuous tones). Does anyone have an opinion? With thanks Bob Stuart: Meridian Audio, Cambridge, England

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