[nfb-talk] sonar for blind

[Michael Bullis]

As I have indicated in other articles, I think we disparage this kind of
thing far too quickly.  It works very well for detecting objects at quite a
distance.  No, I don't want to click my way into a job interview, but, at
the same time, the skill is useful in its propper place.
Mike Bullis
Baltimore MD


-----Original Message-----
From: nfb-talk-bounces at nfbnet.org [mailto:nfb-talk-bounces at nfbnet.org] On
Behalf Of T. Joseph Carter
Sent: Tuesday, June 28, 2011 12:49 PM
To: NFB Talk Mailing List
Subject: Re: [nfb-talk] sonar for blind

Why do parents encourage this kind of thing, really?  *sigh*

Joseph

On Tue, Jun 28, 2011 at 11:33:46AM -0400, Ed Meskys wrote:
>The Growing Success of Seeing With Sound
>from Spiegel
>
>Two-and-a-half-year-old Juli merrily twirls around, holding a small white
cane in her outstretched arm. Every so often, she makes a discreet clicking
sound with her tongue. Doing so allows her to see with her ears, her parents
say. She just needs more practice.
>
>Four-and-a-half-year-old Frida already knows how it works. If someone holds
out a pot lid at arm's length, she can locate it with a fair degree of
precision. Using subtle tongue clicks, she scans the space in front of her
face. "There it is!" she says. With a few more clicks, she can even
determine the contours of the lid. The edge lies where the echo cuts off and
she no longer hears a response.
>
>The two girls are learning a method of echolocation known as "flash sonar,"
which resembles the type of active sonar used by bats. Both were born blind
in Berlin, and both have parents who want to spare them from the typical
life of a blind person.
>
>http://ow.ly/5rV9d
>
>
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