intermodulation

/ˌɪntərˌmɑdʒəˈleɪʃən/
noun
  1. The production of unwanted signals in a radio or audio system when two or more signals mix together in a non-linear way.
    • The technician adjusted the antenna to reduce intermodulation in the radio signal.
    • Engineers test amplifiers to ensure they don't produce excessive intermodulation.
    • Intermodulation can cause distortion in a sound system when multiple instruments play at once.