Data update
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Ingy döt Net
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4bb20c9b71
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12390 changed files with 318560 additions and 27248 deletions
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@ -8,92 +8,92 @@ import javax.sound.sampled.SourceDataLine;
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public final class MorseCode {
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public static void main(String[] args) {
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Map<String, String> morseCode = Map.ofEntries(
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// International Morse Code, ITU standard
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Map.entry("A", ".-"), Map.entry("B", "-..."), Map.entry("C", "-.-."), Map.entry("D", "-.."),
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Map.entry("E", "."), Map.entry("F", "..-."), Map.entry("G", "--."), Map.entry("H", "...."),
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Map.entry("I", ".."), Map.entry("J", ".---"), Map.entry("K", "-.-"), Map.entry("L", ".-.."),
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Map.entry("M", "--"), Map.entry("N", "-."), Map.entry("O", "---"), Map.entry("P", ".--."),
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Map.entry("Q", "--.-"), Map.entry("R", ".-."), Map.entry("S", "..."), Map.entry("T", "-"),
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Map.entry("U", "..-"), Map.entry("V", "...-"), Map.entry("W", ".--"), Map.entry("X", "-..-"),
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Map.entry("Y", "-.--"), Map.entry("Z", "--.."),
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Map.entry("1", ".----"), Map.entry("2", "..---"), Map.entry("3", "...--"), Map.entry("4", "....-"),
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Map.entry("5", "....."), Map.entry("6", "-...."), Map.entry("7", "--..."), Map.entry("8", "---.."),
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Map.entry("9", "----."), Map.entry("0", "-----"),
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// Generally accepted additions
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Map.entry("'", ".----."), Map.entry(":", "---..."), Map.entry(",", "--..--"), Map.entry("-", "-....-"),
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Map.entry("(", "-.--.-"), Map.entry(".", ".-.-.-"), Map.entry("?", "..--.."), Map.entry(";", "-.-.-."),
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Map.entry("/", "-..-."), Map.entry(")", "---.."), Map.entry("=", "-...-"), Map.entry("@", ".--.-."),
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Map.entry("\"", ".-..-."), Map.entry("+", ".-.-.")
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);
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prepareSourceDataLine();
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final int frequency = 1280; // Frequency of the sound tone in Hertz
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final int time = 250; // Time unit in milliseconds
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// Correct pacing of the sound transmission is essential for practical use
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final int dot = 1; // Time units taken for one dot
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final int dash = 3; // Time units taken for one dash
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final int interval = 1; // Time units interval between dots and dashes
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final int letterInterval = 1; // Time units interval between letters of a word
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final int wordInterval = 7; // Time units interval between words
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String message = "Hello World";
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for ( String letter : message.toUpperCase().split("") ) {
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switch ( letter ) {
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case " " -> tone(0, time * wordInterval, 0);
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default -> {
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String code = morseCode.get(letter);
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for ( String dotDash : code.split("") ) {
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switch ( dotDash ) {
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case "." -> { tone(frequency, time * dot, 1); tone(0, time * interval, 0); }
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case "-" -> { tone(frequency, time * dash, 1); tone(0, time * interval, 0); }
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}
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}
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}
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}
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tone(0, time * letterInterval, 0);
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}
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}
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private static void tone(double frequency, int duration, int volume) {
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sourceDataLine.start();
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IntStream.range(0, 8 * duration).forEach( i -> {
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final double angle = i / ( SAMPLE_RATE / frequency ) * 2 * Math.PI;
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byte[] buffer = new byte[] { (byte) ( Math.sin(angle) * 127 * volume ) };
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sourceDataLine.write(buffer, BYTE_OFFSET, buffer.length);
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} );
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sourceDataLine.drain();
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sourceDataLine.stop();
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}
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private static void prepareSourceDataLine() {
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final int sampleSizeInBits = 8;
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final int numberChannels = 1;
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final boolean signedData = true;
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final boolean isBigEndian = false;
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AudioFormat audioFormat = new AudioFormat(
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SAMPLE_RATE, sampleSizeInBits, numberChannels, signedData, isBigEndian);
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try {
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sourceDataLine = AudioSystem.getSourceDataLine(audioFormat);
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sourceDataLine.open(audioFormat);
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} catch (LineUnavailableException lue) {
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lue.printStackTrace();
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}
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}
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private static SourceDataLine sourceDataLine;
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private static float SAMPLE_RATE = 8_000.0F;
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private static final int BYTE_OFFSET = 0;
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public static void main(String[] args) {
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Map<String, String> morseCode = Map.ofEntries(
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// International Morse Code, ITU standard
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Map.entry("A", ".-"), Map.entry("B", "-..."), Map.entry("C", "-.-."), Map.entry("D", "-.."),
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Map.entry("E", "."), Map.entry("F", "..-."), Map.entry("G", "--."), Map.entry("H", "...."),
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Map.entry("I", ".."), Map.entry("J", ".---"), Map.entry("K", "-.-"), Map.entry("L", ".-.."),
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Map.entry("M", "--"), Map.entry("N", "-."), Map.entry("O", "---"), Map.entry("P", ".--."),
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Map.entry("Q", "--.-"), Map.entry("R", ".-."), Map.entry("S", "..."), Map.entry("T", "-"),
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Map.entry("U", "..-"), Map.entry("V", "...-"), Map.entry("W", ".--"), Map.entry("X", "-..-"),
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Map.entry("Y", "-.--"), Map.entry("Z", "--.."),
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Map.entry("1", ".----"), Map.entry("2", "..---"), Map.entry("3", "...--"), Map.entry("4", "....-"),
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Map.entry("5", "....."), Map.entry("6", "-...."), Map.entry("7", "--..."), Map.entry("8", "---.."),
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Map.entry("9", "----."), Map.entry("0", "-----"),
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// Generally accepted additions
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Map.entry("'", ".----."), Map.entry(":", "---..."), Map.entry(",", "--..--"), Map.entry("-", "-....-"),
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Map.entry("(", "-.--.-"), Map.entry(".", ".-.-.-"), Map.entry("?", "..--.."), Map.entry(";", "-.-.-."),
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Map.entry("/", "-..-."), Map.entry(")", "---.."), Map.entry("=", "-...-"), Map.entry("@", ".--.-."),
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Map.entry("\"", ".-..-."), Map.entry("+", ".-.-.")
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);
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prepareSourceDataLine();
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final int frequency = 1280; // Frequency of the sound tone in Hertz
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final int time = 250; // Time unit in milliseconds
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// Correct pacing of the sound transmission is essential for practical use
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final int dot = 1; // Time units taken for one dot
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final int dash = 3; // Time units taken for one dash
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final int interval = 1; // Time units interval between dots and dashes
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final int letterInterval = 1; // Time units interval between letters of a word
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final int wordInterval = 7; // Time units interval between words
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String message = "Hello World";
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for ( String letter : message.toUpperCase().split("") ) {
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switch ( letter ) {
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case " " -> tone(0, time * wordInterval, 0);
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default -> {
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String code = morseCode.get(letter);
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for ( String dotDash : code.split("") ) {
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switch ( dotDash ) {
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case "." -> { tone(frequency, time * dot, 1); tone(0, time * interval, 0); }
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case "-" -> { tone(frequency, time * dash, 1); tone(0, time * interval, 0); }
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}
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}
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}
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}
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tone(0, time * letterInterval, 0);
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}
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}
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private static void tone(double frequency, int duration, int volume) {
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sourceDataLine.start();
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IntStream.range(0, 8 * duration).forEach( i -> {
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final double angle = i / ( SAMPLE_RATE / frequency ) * 2 * Math.PI;
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byte[] buffer = new byte[] { (byte) ( Math.sin(angle) * 127 * volume ) };
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sourceDataLine.write(buffer, BYTE_OFFSET, buffer.length);
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} );
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sourceDataLine.drain();
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sourceDataLine.stop();
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}
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private static void prepareSourceDataLine() {
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final int sampleSizeInBits = 8;
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final int numberChannels = 1;
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final boolean signedData = true;
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final boolean isBigEndian = false;
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AudioFormat audioFormat = new AudioFormat(
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SAMPLE_RATE, sampleSizeInBits, numberChannels, signedData, isBigEndian);
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try {
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sourceDataLine = AudioSystem.getSourceDataLine(audioFormat);
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sourceDataLine.open(audioFormat);
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} catch (LineUnavailableException lue) {
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lue.printStackTrace();
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}
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}
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private static SourceDataLine sourceDataLine;
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private static float SAMPLE_RATE = 8_000.0F;
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private static final int BYTE_OFFSET = 0;
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}
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