In these situations, a simple decoder like [Rostislav]’s is completely sufficient. We wrote about a couple of Morse code algorithms back in 2014, the MorseDetector and the Magic Morse algorithm.

Morse code is used in telecommunication; it is a method of transmitting and receiving coded information. Each character (letter or numeral) is coded/represented by a unique sequence of dots and dashes ...

The Commsonic CMS0002 Viterbi Decoder core implements Viterbi’s algorithm for maximum likelihood decoding of non-feedback convolutional codes. Applications include DOCSIS (J.83B), DVBT, 802.11a ...

Here is underworld code #4 for the Wired Underworld issue’s Ring of Dishonor. The codes are all secret languages used by people living below the law in various periods in history. Further codes ...