Android application to listen and parse near ultra-high frequency audio via onboard microphone
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README.md

CFP_Ultra

Android near ultra-high frequency listener

 * - vers. 1.0
 * - min/target API 18 - 4.3
 * - s4 4.3.1 (18) - testing use
 * - s5 5.1.1 (22) - install only

Test application for researching methods of receiving audio signals from 18000 Hz to 19950 Hz.

  • Alphabet characters (A-Z, a) are represented by frequencies separated by 75 hertz.
  • Start tone is 'A' (18000Hz) and stop tone is 'a' (19950Hz). Message must be in alphabetical order.
  • included html 5 page (transmitter.html) that consists of js synth and test sequence.

2016 Kaputnik Go