[access-uk] Re: How the blind can use sonar to 'see' like a bat
- From: Carol Pearson <carol.pearson29@xxxxxxxxxxxxxx>
- To: "access-uk@xxxxxxxxxxxxx" <access-uk@xxxxxxxxxxxxx>
- Date: Wed, 22 May 2013 22:52:08 +0100
My thoughts exactly!
Carol P
Sent from my iPhone using BrailleTouch
On 22 May 2013, at 09:48 AM, George Bell <George@xxxxxxxxxxxxxxxxxxx> wrote:
> My goodness! We could have told them that ages ago, and saved all that work.
>
> George.
>
> -----Original Message-----
> From: access-uk-bounce@xxxxxxxxxxxxx [mailto:access-uk-bounce@xxxxxxxxxxxxx]
> On Behalf Of Derek Hornby
> Sent: 21 May 2013 20:29
> To: access-uk@xxxxxxxxxxxxx
> Subject: [access-uk] How the blind can use sonar to 'see' like a bat
>
> I thought this may be of interest
> How the blind can use sonar to 'see' like a bat Daily Telegraph 21 May 2013
> BLIND and visually impaired people can locate objects by listening to echoes,
> just as bats and dolphins do, scientists have discovered.
>
> The built-in sonar may also help them with finding their way and with general
> spatial awareness.
>
> Researchers at Southampton University devised experiments with both sighted
> and blind people in a chamber where other sounds, such as the footsteps of
> people placing the objects, were eliminated.
>
> They found that blind people were able roughly to find objects from noises
> bouncing off their surface, while sighted people with good hearing showed
> potential to do so with practice. They tried sounds of different pitches and
> durations and discovered that some worked better than others and that it was
> more dif-ficult when the person was not facing the item, or it was further
> away.
>
> Dr Daniel Rowan, the lead author, said: "Some people were better than others
> but being blind doesn't automatically confer good echolocation ability.
> Ability probably gets even better with extensive experience and feedback."
>
> The researchers hope to develop training programmes and devices to help the
> blind as well as sighted people in situations where their vision is reduced.
>
> The study was published in the journal Hearing Research.
>
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