01 / INPUT AUDIO
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TAP TO SELECT WAV · OR DROP FILEor tap to choose a WAV from your phone or computerNo audio loaded.
Duration—
Sample rate—
02 / SIGNAL SETTINGS
Change timing during playback or after decoding to redraw the image immediately. AVT and FAX480 may require manual selection.
Resynthesizes the signal into a lower, more comfortable pitch range centered around 500 Hz, retaining frequency variation. Works at both 1× and 8×. Uncheck to hear the original signal (at 8× its pitch rises). Image decoding always uses the original WAV.
Load a WAV file to begin.
03 / RECEIVED IMAGE
NO SIGNALThe canvas reveals decoded scan lines as processing progresses. Audio plays alongside the scan. Low-tone playback is enabled by default. The original WAV is never modified.
04 / LIVE SPECTROGRAM
IDLEFrequency: 900–2600 Hz · Time moves left to right. The bright vertical marker indicates the scan position.
05 / SIGNAL REPORT
Waiting for a transmission.