–. — — –. .-.. . / –. .-.. .- … … / …. . .-.. .–. … / -.– — ..- / – — / .-.. . .- .-. -. / — — .-. … . / -.-. — -.. . / .. -. / ….- / …. — ..- .-. … .-.-.-
Okay, so what’s this dash and dot? It’s Morse Code and it depicts: Google Glass helps you to learn Morse Code in 4 hours.
Yeah, you heard that right!
Morse code is a technique of transmitting text information in which letters and numbers are represented by combinations of long and short light or sound signals i.e. dash(-) and dot(.). Morse code has been in use for more than 160 years — longer than any other electronic encoding system. It is universally understood by operators in all countries. The duration of a dash is 3 times the duration of a dot. Each dot or dash is followed by a short silence, equal to the dot duration. The words in any text are separated by a space equal to seven dots. The dot duration is the basic unit of time measurement in code transmission. To increase the speed of the communication, the code was designed so that the length of each character in Morse varies approximately inversely with its frequency of occurrence in English. Thus the most common letter in English, the letter “E”, has the shortest code, a single dot.
Researchers said that they have used Google Glass to teach people Morse code within four hours using a series of vibrations felt between their temple and ear. Participants wearing this glass learned it without paying attention to the signals – they played games while feeling the vibration taps and hearing the corresponding letters. The taps represented the dots and dashes of Morse code and passively ‘taught’ users through their tactile senses – even while they were distracted by the game.
Researchers at the Georgia Institute of Technology in the US decided to use Glass for this study because it has both a built-in speaker and tapper (Glass’s bone-conduction transducer). The taps were created when researchers sent a very low-frequency signal to Glass’s speaker system. At less than 15 Hz, the signal was below the hearing range but, because it was played very slowly, the sound was felt as a vibration.
After those few hours, everyone was challenged to type the alphabet in Morse code and they were 94% accurate keying a sentence that included every letter of the alphabet and 98% accurate writing codes for every letter.
“It shows that PHL (passive haptic learning) lowers the barrier to learn text-entry methods — something we need for Smart-watches and any text-entry that doesn’t require you to look at your device or keyboard,” said Thad Starner, a professor at Georgia Institute of Technology.