[nfb-talk] sonar for blind

ckrugman at sbcglobal.net ckrugman at sbcglobal.net
Fri Jul 22 00:19:19 UTC 2011


Actually, I remember doing similar things as a small child to go around the 
house or the neighborhood berfore beginning mobility training at about age 
12. I have a small amount of vision where I can see objects and shadows but 
no detail or color.
Chuck
----- Original Message ----- 
From: "Michael Bullis" <bullis.michael at gmail.com>
To: "'NFB Talk Mailing List'" <nfb-talk at nfbnet.org>
Sent: Tuesday, June 28, 2011 10:12 AM
Subject: Re: [nfb-talk] sonar for blind


> 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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