For the blind echo-locators, wearing a very high frequency pinging device and headphones that translate the pings and echoes to human audio levels would allow blind people he "see" more like bats, and eliminate the need for the incessant mouth clicks. I'm sure this is being done.
For the blind echo-locators, wearing a very high frequency pinging device and headphones that translate the pings and echoes to human audio levels would allow blind people he "see" more like bats, and eliminate the need for the incessant mouth clicks. I'm sure this is being done.
For the blind echo-locators, wearing a very high frequency pinging device and headphones that translate the pings and echoes to human audio levels would allow blind people he "see" more like bats, and eliminate the need for the incessant mouth clicks. I'm sure this is being done.
Now that you mention it, I think I've seen some sort of testing of a wearable device. Not sure though.