SOS Signal © Siemens Stiftung 2018 CC BY-SA 4.0 international

SOS Signal

Audio

Sound:
The SOS call in Morse code is a good example of information encoded as a sequence of signals.

English, German
Audio (279.0 kByte)
2018-07-27
Certain types of information can only be transmitted after encoding. In the best known encoding procedure, the Morse code, every letter in the alphabet is presented by a sequence of short and long signals (dot/dash or long tone/short tone). Morse messages are still transmitted in short and long tones.
The recording of a SOS Morse message underscores that individual coded signals (three short, three long and three short sounds) convey information: SOS = "Save Our Souls".

Information and ideas:
Ideally suited as entry to the topic area of coding, speech, communication.
Sample audio clip
Information and Communication Technology (ICT); Technology
Grade 1 to 4; Grade 5 to 6; Grade 7 to 9; Grade 10 to 13
Elementary school; Middle/high school; Vocational training
Coding; Communication; Computer technology; Data processing; Signal (electricity); Speech
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© Siemens Stiftung 2018
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