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Re: Critical bands v hearing loss
As probably most List members know, the normal just noticable frequency
difference between two consecutive 70 dB sine tones in the range
from 0.5 to 3 kHz is about 5 cents (i.e., about 0.3 percent).
The critical band width between 0.5 and 5 kHz is about 300 cents.
>-- Original-Nachricht --
>Date: Thu, 22 Sep 2005 01:04:59 -0500
>Reply-To: Vinay SN <vinaysn@xxxxxxxxx>
>From: Vinay SN <vinaysn@xxxxxxxxx>
>Subject: Re: Critical bands v hearing loss
>The human ear can only make sense of one signal per critical band. For
>example, if two sine tones of 100Hz and 110Hz are played, two distinct
>tones are not heard. This is because the critical bandwidth at 100Hz is
>about 80Hz, and the two tones would be within the same critical band; one
>will only hear two distinct tones when the two excitations exist in
>separate critical bands. Hence there is no point in having controllable
>bands which are finer in resolution than a critical band.
>Vinay S.N (M.Phil, M.Sc)
>Doctoral Student in Audiology,
>AIISH, Mysore - 6.
> ----- Original Message -----
> From: "Richard H."
> To: AUDITORY@xxxxxxxxxxxxxxx
> Subject: Critical bands v hearing loss
> Date: Wed, 21 Sep 2005 15:14:00 +0100
>Hi, In hearing aids & similar band-based audio processors, is there
>likely to be any point in having controllable bands which are finer in
>resolution than a critical band? Thanks, regards, Richard
Dr. phil. nat.,
Phone: 0041 56 441 77 72.
Mobile: 0041 79 754 30 32.