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CW to Text Decoder

Upload an MP3 recording of Morse code to analyse it and review the decoded text.

MP3 Upload

Max 50MB

Drop MP3 file here

or click to browse

Analysis settings

Analysis Settings

Detection Parameters

5
Min WPM
40
Max WPM
300
Min Frequency
1000
Max Frequency

Signal Processing

0.3
Signal detection threshold
5
Signal smoothing factor

Advanced Options

Decoded Results

--
Detected WPM
--
Peak Frequency
--
Signal Quality
--
Characters

Decoded Text

Upload an MP3 file with Morse code audio to see the decoded text here...

Processing Log

Waiting for audio file...

CW Decoder Help

Supported Audio Formats

  • • MP3 files (up to 50MB)
  • • Sample rates: 8kHz to 48kHz
  • • Mono or stereo audio
  • • Bit rates: 32kbps to 320kbps

Best Results

  • • Clean CW signals without background noise
  • • Consistent keying and timing
  • • Single frequency tone (400-800Hz optimal)
  • • Speed range: 5-40 WPM

Tips for Better Decoding

  • • Adjust frequency range to match your signal
  • • Use noise threshold to filter weak signals
  • • Enable auto speed detection for varying speeds
  • • Check signal quality before decoding

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