Morse Code Audio Synthesizer & Player
Translate text to ITU Morse code or decode Morse to text with live Web Audio API tone playback and downloadable WAV audio.
How to Use Morse Code Audio Synthesizer & Player
- Enter plain text (e.g., SOS or HELLO WORLD) or Morse code dots and dashes (e.g., ... --- ...).
- Adjust the transmission speed (5 to 40 WPM) and tone frequency (300 to 1200 Hz).
- Click Process to hear the synthesized Morse audio in your browser and view the character-by-character timing table.
- Copy the translated output or click Download Result to save a 16-bit PCM .wav audio file.
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Frequently Asked Questions
How is Morse code speed (WPM) calculated using the PARIS standard?
In international telegraphy, the reference word 'PARIS' requires exactly 50 timing units (dits). Therefore, at W words per minute, one dit duration equals 1,200 ÷ W milliseconds. At 20 WPM, a dit lasts 60 ms and a dah (3 units) lasts 180 ms.
What are the standard spacing rules between dots, letters, and words in Morse code?
According to ITU-R M.1677-1: a dot (dit) is 1 unit; a dash (dah) is 3 units; the gap between elements within the same character is 1 unit; the gap between letters is 3 units; and the gap between words (represented by '/') is 7 units.
How do I decode Morse code back into English text?
Paste dots (.) and dashes (-) separated by spaces between letters and forward slashes ( / ) between words—for example, '.... . .-.. .-.. --- / .-- --- .-. .-.. -..'—and the tool will automatically decode it to 'HELLO WORLD' while playing the audio.
Can I download the Morse code audio as a sound file?
Yes. Every run synthesizes a standard 22,050 Hz, 16-bit mono PCM WAV audio buffer in memory. Click the Download button to save the .wav file to your device.
What frequency is best for listening to CW Morse code?
Amateur radio operators typically prefer CW side-tone pitches between 600 Hz and 800 Hz (with 750 Hz as the default) because the human ear distinguishes rhythmic tone onsets best in that midrange frequency band.