[CM] Headphones
Adrian Caspersz writes:
On 19/04/17 12:05, geoff wrote:
Kind of depends if you want headphones for high quality sound, or as a
fashion accessory.
Or as a covert DIY hearing aid ..
The future is going to see them rather prominent and fashionable like
eyewear, and additionally integrated with the music/phone (possibly that
made the user deaf in the first place[1]).
AFAICT the circuit design and tuning controls are sophisticated,
albeit straigtforward, electronics but the big bucks are for fitting
all that into a widget the size of a fava bean.
I'd be happy to wear headphones or earbuds and carry a widget the size
of a large cell phone if it worked for my hearing loss and cost a few
hundred bucks instead of the ca. $2,000 per ear.
On that subject, like a prescription for glasses, is there a written
standard of writing one for hearing aids?
Bandwidth tuning, noise cancellation -- what else? See
"sophisticated" supra. I'm guessing that "adjusting" a modern hearing
aid is done by connecting it to a computer and proprietary software.
They're too small to support an array of little adjusting screws.
With the rip-off shameful high cost of some of these (thousands) praying
on folks that want them so covert, surely a home build DSP project
(opensource?) is possible with knowledge of the right parameters? or use
of a cheaper Generic device for sale?
Where's this happening? I high-frequency loss, speech discrimination
loss and tinitis. But I'm weak on serious math and know almost noting
about electronic hardware. There was a brief flurry of interest in
DSP projects in Halifax (NS) circa 1994 but I think it's faded away.
[1] - Shouldn't joke. That will eventually be me.... Loud electronica
music fan here.
Wroking around loud engines, running power tools and hammering at the
anvil are quite enough, thanks, without rock n' roll.
--
Mike Spencer Nova Scotia, Canada
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