[nfb-talk] sonar for blind

Michael Bullis bullis.michael at gmail.com
Tue Jun 28 17:24:27 UTC 2011


Thanks Mike.  Good one.
The cane does work and maybe is the only thing that works well for us older
folks but if you propperly learn how to click it is far more directional and
can be used while riding bikes or roller skating much more easily than a
cane.
Mike Bullis


-----Original Message-----
From: nfb-talk-bounces at nfbnet.org [mailto:nfb-talk-bounces at nfbnet.org] On
Behalf Of Mike Freeman
Sent: Tuesday, June 28, 2011 1:20 PM
To: NFB Talk Mailing List
Subject: Re: [nfb-talk] sonar for blind

I am moved to wonder why tapping a cane wouldn't work as well. On the other
hand, these kids may just be in process of converting to the metric system.
Remember when we used to hear Army or Marine troops in Vietnam saying they'd
seen a company of VC or NVA "a couple of klicks away!"? (grin)

Mike

On Jun 28, 2011, at 10:12, "Michael Bullis" <bullis.michael at gmail.com>
wrote:

> 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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