7/25/2023 0 Comments Pdolew morse decoder![]() The model was also able to pull Morse out of a signal with -6 dB signal-to-noise ratio, even though it had been trained with a much cleaner signal. The first training run only resulted in about 36% accuracy, but a subsequent run with shorter snippets ended up being 99.5% accurate. Using a few lines of Python, he converts short, known snippets of Morse to a grayscale image that looks a little like a barcode, with the light areas being the dits and dahs and the dark bars being silence. But things take an unexpected turn right from the start, as uses a Tensorflow handwriting recognition implementation to train his model. His method uses curated training data to build a model, namely Morse snippets and their translations, as is the usual approach with such systems. The blog entry by the delightfully callsigned reads like a scientific paper, with good reason: really seems to know a thing or two about machine learning. Militaries use immersion language instruction, as do diplomats and journalists, and apparently computers can now use it to teach themselves Morse code. Steph has updated details to Positivity Pusher | infinite affirmation generator.Conventional wisdom holds that the best way to learn a new language is immersion: just throw someone into a situation where they have no choice, and they’ll learn by context.kelvinA has updated the log for Tetrinsic.Bryom liked ESP32 VFO 10 KHz-160 MHz with Retro Analog Scale.Yann Guidon / YGDES has updated the log for n00n - Real Time Music Sensor Streaming Protocol.Sebastian liked LOCKDOWN: An open-source Analog Lock-In Amplifier.Brett Smith has added a new log for Echo Sounder Buoys: Upcycling Playbook.Gos has updated the project titled GPS device with ESP32.Gregory wrote a comment on Sound of Speed.Gregory has updated details to Sound of Speed.Shiela Dixon has updated the log for MSX on RC2014.Rob Antonishen on Retrotechtacular: Programming By Card.Foldi-One on Open Source And Giving Back.Klanker on Powerful Water Pump Is Modular In Nature.Urgon on An Open Source Firmware For Cheap Geiger Counters.Brian on Will The Lilium Jet Work? A Deep-Dive Into The Physics Behind EVTOL Aircraft.Herr Brain on Open Source And Giving Back.In Praise Of RPN (with Python Or C) 36 Comments Posted in Arduino Hacks, ARM, Microcontrollers Tagged arduino, bluepill, cw, ham radio, morse code, stm32 Post navigation If you buy a Bluepill to make one of these, you might as well get two and build something to send code, too. Once you find the matching code, you apply the same index to another table to look up the actual letter or string of letters. So an “E” codes as 02 hex - a start bit followed by a single zero or dot. All bits to the left of the start bit don’t count. The decoder table looks confusing at first until you realize that each “decode” value consists of a 1 as a start bit followed by a 1 for a dash and a zero for a dot. That is, while a full transform gives you information about the frequency component of a signal across a wide range, the Goertzel algorithm probes the signal for one or a small number of distinct frequencies. As for the decoding method, the software employs the Goertzel algorithm which is akin to a single frequency Fourier transform. The code uses the Arduino-style setup for the Blue pill - something we’ve talked about before. You can see it at work along with a description of the project in the video below. The device uses a touchscreen and a few common components. For example, has a decoder that runs on a cheap Bluepill dev board. ![]() But if you can’t - or even if you can, and just want a break - you can always get a computer to do it. You really should learn to read Morse code.
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