cassette-playlist's Introduction
py-kcs - Encode/Decode Kansas City Standard Audio Cassette Data Author: David Beazley (http://www.dabeaz.com) Copyright (C) 2010 This is free software. You are free to use it however you wish, but if you decide to include it in some other package, please give me some credit. Overview -------- This package provides a pair of scripts, kcs_encode.py and kcs_decode.py that encode and decode WAV audio files containing data encoded in the Kansas City Standard as used on some of the first home computers. In my case, an Ohio Scientific Superboard II from 1978. For more information on KCS encoding, see http://en.wikipedia.org/wiki/Kansas_City_standard Usage ----- First of all, you need to install Python-3.1.2 or newer on your system. To encode a text file into a WAV file suitable for playback, do this: % python3 kcs_encode.py input.txt output.wav This reads the file 'input.txt' and writes a WAV file 'output.wav'. The resulting WAV file is encoded in mono with a framerate of 9600 Hz. To decode a WAV file containing KCS data that you have recorded, do this: % python3 kcs_decode.py input.wav Decoded text contained in the WAV file will be printed to standard output. This decoding process will strip NULL bytes and convert line endings to the native line endings for your platform. If you want to decode raw binary data, type this: % python3 kcs_decode.py -b input.wav In this case, output is still directed to standard output, but is exactly as found in the audio (including all NULL bytes). More Information ---------------- See the following blog posts for more information: http://dabeaz.blogspot.com/2010/08/using-python-to-encode-cassette.html http://dabeaz.blogspot.com/2010/08/decoding-superboard-ii-cassette-audio.html Installation Notes ------------------- The kcs_encode.py and kcs_decode.py are standalone programs that should work with any Python 3 installation (version 3.1.2 or newer). If you decide to install the scripts, they are simply placed in the Python scripts directory. Feedback -------- This is just a fun personal project for me. If you use these scripts for a vintage computing project, send me email ([email protected]) and let me know about it. --Dave
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