Low-frequency effects

For other uses, see LFE (disambiguation).

The low-frequency effects (LFE) channel is a band-limited audio track that is used for reproducing deep and intense low-frequency sounds in the 3–120 Hz frequency range.[1] [2] [3] [4]

This track is normally sent to a subwoofer—a loudspeaker designed to reproduce very low frequencies. LFE channels originated in Dolby Stereo 70 mm film,[1] but in the 1990s and 2000s they became common in home theater systems in order to reproduce film soundtracks found on DVDs and Blu-ray discs.

  1. ^ a b "What is the LFE channel?" (PDF). Dolby Laboratories, Inc. 2000. Retrieved 2021-04-11.
  2. ^ "5.1-Channel Production Guidelines" (PDF). Dolby Laboratories, Inc. 2000. Retrieved 2021-04-11.
  3. ^ "5.1-Channel Music Production Guidelines" (PDF). Dolby Laboratories, Inc. 2005. Retrieved 2021-04-11.
  4. ^ Mason, Andrew (August 2011). "Use of the low frequency effects (LFE) channel in broadcasting" (PDF). BBC Research and Development White Paper WHP 203. Retrieved 2021-04-11.{{cite web}}: CS1 maint: year (link)