PHP morse code and wav(e) sound file generation

Supported character sets

• Arabic, Cyrillic, Greek (needs conversion to upper case letters (function included)), Hebrew, Japanese Korean, Latin, Persian, and Thai.

composer require jblond/morse

Example UI: https://github.com/JBlond/maas

Examples

<?php

use jblond\morse\Morse;
use jblond\morse\Wave;

require './vendor/autoload.php';

$morse = new Morse();
$morseBinary = $morse->stringToMorse('SOS');
$morse = $morse->dotDash($morseBinary);
echo $morse;
$wave = new Wave();
file_put_contents('sos.wav', $wave->generate('SOS'));

Non latin example

<?php

use jblond\morse\Morse;

require './vendor/autoload.php';

$morse = new Morse();
$morse->setLetters('Cyrillic');
$morse->stringToMorse('Запомнить');

Morse API

• setLetters Change the origin character set (letters / language)
  • available: Arabic, Cyrillic, Greek, Hebrew, Japanese, Korean (SKATS), Latin (default), Persian, and Thai.
• getLetters Get an array of the current selected character set
• getCharacter Convert a single character into morse binary code. An invalid character will return a #.
• stringToMorse Convert a string into binary morse code.
• dotDash Convert binary morse code into dot and dash / dit and dah.

Greek characters

Since the PHP strtoupper function fails for Greek, an extra function to do so has been added.

<?php
use jblond\morse\Morse;
use jblond\morse\CharacterSet\Greek;

require './vendor/autoload.php';

$morse = new Morse();
$morse->setLetters('Greek');
$morse->stringToMorse((new Greek())->stringToUpper('Τέλος εκπομπής'));

Wav(e) API

• setCwSpeed set words per minute (cw speed). Default is 25.
• setSampleRate default is 11050. An audio CD would be 44100 aka 44.1 kHz (16 bit).
• setFrequency set the tone height. Default is 700 (cw tone).
• generate get the audio as binary.

License: MIT