![]() Please do not try to decode tones outside this range. The audio filter works for tone frequencies from 300 to 2400 Hz. Use the optional narrow-band DSP audio filter to help filter out background noise. The Morse Code Decoder includes a built-in spectrogram to help determine the audio frequency of the Morse Code tones. Manually adjustable parameters include the frequency of the audio filter, the WPM dot/dash speed used for detecting characters, the threshold level of background noise, and whether Farnsworth timing is to be used for detecting spaces between individual characters. The Morse Code Decoder includes both an automatic decoding mode, plus manual controls to allow the decoding of weaker signals in noise and QRM. Just use the microphone or headset input on your iPhone or iPad for the audio signal input, and watch decoded text appear. ![]() The HotPaw Morse Code Decoder translates Morse Code sound into text. ![]()
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