On 31/03/2017 6:46 PM, Don Pearce wrote:
On Fri, 31 Mar 2017 18:33:50 +1100, Trevor wrote:
On 31/03/2017 6:13 AM, Don Pearce wrote:
On Fri, 31 Mar 2017 08:10:03 +1300, geoff
wrote:
But what do you do when the years move on and some correction is
needed? Here's a pair of self-administered audiograms, from 2001 and
three days ago. I've actually won a bit of bass, but the top end is
vanishing fast.
http://www.soundthoughts.co.uk/look/audiogram.png
These were taken with a nice pair of Stax phones, so they should be
pretty reliable. On the recent one you can see a masking peak at 4kHz
caused by tinnitus.
I take it that it is upside-down to the usual sense ?
No, that's a normal threshold curve. That is how loud sounds have to
be for me to just barely detect them.
Not a threshold curve as plotted by an audiologist however. Geoff is
right, it's upside down to what is normally accepted.
Well, just so we are clear - the x-axis is frequency and the y-axis is
SPL.
Yep, that was clear already.
I've plotted it the way it makes most sense to me.
Perhaps, but as stated, upside down to audiology convention.
No biggie though, until you see an audiologist. :-)
Trevor.