AM and FM Modulation of ASCII Input

Continuous sinusoidal oscillations can be used to transmit discrete data such as ASCII-encoded characters. Click the characters to build a message or "reset" to clear it. The binary ASCII code is displayed for each character, as well as an example of a modulated signal containing the entire message. Toggle between AM and FM modulation: AM uses high amplitudes (1.5) for ones and low amplitudes (0.5) for zeros; FM uses high frequencies for ones and low frequencies for zeros. You can also change the carrier frequency.


  • [Snapshot]
  • [Snapshot]
  • [Snapshot]
    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.