Re: [Phys-L] Personal Sound Amplifiers (PSA)

[Ludwik Kowalski <kowalskil@mail.montclair.edu>]

a) Is this a guess or is it a formally repoted fact? 
b) If a fact then where was it reported?

Ludwik
======================

On Jul 15, 2015, at 9:36 PM, Bill Norwood wrote:

> Is it true that those $2000. hearing aids cost about 15 cents to make in
> China?
> On Jul 15, 2015 4:39 PM, "Bernard Cleyet" <bernard@cleyet.org> wrote:
>
> > Instead of a tone control a reduced graphic equalizer with three octave
> > controls.  Say, 50=>500; 1=>2k; 2+. up.
> >
> > For me at least, simply increasing the volume does increase
> > intelligibility.
> >
> >
> > bc thinks those audio people are capitalist pigs, as Ludwik suggested.
> >
> >
> > On 2015, Jul 15, , at 09:21, Ludwik Kowalski <kowalskil@mail.montclair.edu>
> > wrote:
> >
> > > OOPS a tying error ==> people might postpone wearing them, for many year.
> > >
> > >
> > >
> > > On Jul 15, 2015, at 12:12 PM, Ludwik Kowalski wrote:
> > >
> > > > Personal Sound Amplifiers (PSA)
> > > >
> > > > Hearing aids are very expensive, typically from $3000 to $6000 a pair.
> > > >
> > > > But some people might wearing them, for many year.
> > > >
> > > > I describe this alternative at my university website:
> > > >
> > > > http://csam.montclair.edu/~kowalski/aps.htm
> > > >
> > > > Feel free to share this short essay with others.
> > > >
> > > > Comments will be appreciated.
> > > >
> > > > Ludwik Kowalski (see Wikipedia)
> >
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