cf9ba20ee0
Computes SNR confidence value, where "signal" is the magnitude of the FSK driven frequency, and "noise" is the magnitude of the non-driven frequency. (Also includes unused algo #4 code, which may not compile anymore.)
minimodem - software audio Bell-type or RTTY FSK modem Copyright (C) 2011-2012 Kamal Mostafa <kamal@whence.com> Minimodem is a command-line program which generates (or decodes) audio modem tones at any specified baud rate, emulating an old Bell-type or radio-teletype FSK modem. The tones can be played to (or recorded from) the system audio (PulseAudio or ALSA) or to an audio file. Minimodem can be used to transfer data between nearby computers using an audio cable (or just via sound waves), or between remote computers using radio, telephone, or another audio communications medium.