Morse decoder

Decodes Morse audio signals

Decodes audio Morse code into text:

% [msg, ToneFreq, ditstat, dahstat] = morseDecode(y, Fs, [ToneFreq])

%

% INPUT

% y - audio signal, [nsmpl, number_of_messages]

% Fs - sampling frequency

% ToneFreq - tone frequency (optional), better be within 30 Hz of the actual one,

% if not set or is empty the actual tone frequency will be estimated

% from the signal, if set to 0, the default 1000 Hz will be used

%

% OUTPUT

% msg - decoded message

% ToneFreq - estimated tone frequency

% ditstat - "dit" interval statistics: [mean, std, min, max]

% dahstat - "dah" interval statistics: [mean, std, min, max]

%

% Based on decode.m from

% https://github.com/drid/morse-audio-decoder

%

% Peter L. Volegov

% Version 1.0.0.0, 05/17/2022