I suppose common sense says that echo location would work in the range
of a few metres, maybe 10 at most, especially if clicking fingers and
tongues, tap-dancing etc is the sound source. Ambient noise would make
a huge difference, atmospheric pressure none.
Shaun O'Connor writes:
That is dependant on a number of factors, hearing acuity, environment,
etc, it is one of those tings where there is no simple pat answer as
far as i know.
On 02/05/2016 14:51, Les Smithson wrote:
What are the distances that echo location works for, and how
significant are changes in atmospheric pressure over these distances?
Shaun O'Connor writes:
>
> interesting topic of discussion, another factor that can affect the
> viability of echo location is chabnges in atmospheric pressure as this
> can alter the way sound travels to a lesser or greater degree.
> On 02/05/2016 11:54, john gallagher wrote:
> > this reminds of this blind chap who uses this echo location to get
around well personally i can hear parked cars on the kerb and the like but
i could never do it without a dog or a cane to me if someone says they can
then they must have some small amount of sight. well or very very good
hearing indeed.
> >
> > ----- Original Message -----
> > From: Les Smithson <lsmithso57@xxxxxxxxx>
> > To: access-uk@xxxxxxxxxxxxx
> > Date: Monday, 2 May 2016 11.48 am
> > Subject: [access-uk] Re: Echolocation anyone?
> >
> >>
> >> Hi. Did you ever try this app? All I found was a bunch of hype, a
link
> >> to a web site with even more hype and some unlabelled buttons. It
> >> takes a special kind of ineptitude to include unlabelled buttons in
an
> >> app aimed squarely at the blind.
> >>
> >>
> >> Steve Nutt writes:
> >> > Hi,
> >> >
> >> >
> >> >
> >> > For anyone who wants to have a go with an Android app to train
you to use
> >> > Echo Location, try this app:-
> >> >
> >> >
> >> >
> >> >
https://play.google.com/store/apps/details?id=com.andromo.dev56550.app58356
> >> >
> >> >
> >> >
> >> > I haven't tried it yet, but it does intrigue me as someone who
uses echo
> >> > location already.
> >> >
> >> >
> >> >
> >> > All the best
> >> >
> >> >
> >> > Steve
> >> >
> >>
> >> --
> >> Les Smithson
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