live browser experiment
The song is also a tiny modem.
This page uses the Web Audio API to split the finished stereo WAV into
left and right channels, reconstruct (left - right) / 2,
and inspect the exact 18 kHz and 20 kHz frequencies that carry a
byte-identical SQLite database. It is not pretending an
<audio> tag is signal processing; the graph below is
computed live in your browser.
Stereo-side spectrum
Press the button to create the audio graph; the database carrier begins 2.5 seconds into the track.
0 carrier -- 18 kHz
1 carrier -- 20 kHz
- Real input: the published 7,680,044-byte PCM WAV.
- Real graph: MediaElementSource -- splitter -- side sum -- analyser.
- Honest limit: this visualizes symbols; the Python artifact performs byte recovery.