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  2. Echo suppression and cancellation - Wikipedia

    en.wikipedia.org/wiki/Echo_suppression_and...

    Echo suppression and echo cancellation are methods used in telephony to improve voice quality by preventing echo from being created or removing it after it is already present. In addition to improving subjective audio quality, echo suppression increases the capacity achieved through silence suppression by preventing echo from traveling across a ...

  3. Acoustical engineering - Wikipedia

    en.wikipedia.org/wiki/Acoustical_engineering

    Acoustical engineering (also known as acoustic engineering) is the branch of engineering dealing with sound and vibration. It includes the application of acoustics , the science of sound and vibration, in technology.

  4. Acoustics - Wikipedia

    en.wikipedia.org/wiki/Acoustics

    Acoustic signal processing is the electronic manipulation of acoustic signals. Applications include: active noise control; design for hearing aids or cochlear implants; echo cancellation; music information retrieval, and perceptual coding (e.g. MP3 or Opus). [21]

  5. Handsfree - Wikipedia

    en.wikipedia.org/wiki/Handsfree

    The main acoustic issues are echo cancellation and noise suppression, although there are others as well. There have been many ways developed to cancel echo in phone calls and results range from poor to excellent. These acoustic technologies must also remove or reduce the noise levels so that the caller is well understood.

  6. Echo cancellation - Wikipedia

    en.wikipedia.org/?title=Echo_cancellation&...

    This page was last edited on 4 April 2014, at 16:49 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...

  7. Outline of acoustics - Wikipedia

    en.wikipedia.org/wiki/Outline_of_acoustics

    Acoustic signal processing – electronic manipulation of acoustic signals. Applications include: active noise control; design for hearing aids or cochlear implants; echo cancellation; music information retrieval, and perceptual coding (e.g. MP3 or Opus). [12]

  8. Videotelephony - Wikipedia

    en.wikipedia.org/wiki/Videotelephony

    Acoustic echo cancellation (AEC) is a processing algorithm that uses the knowledge of audio output to monitor audio input and filter from it noises that echo back after some time delay. If unattended, these echoes can be re-amplified several times, leading to problems including:

  9. Anechoic chamber - Wikipedia

    en.wikipedia.org/wiki/Anechoic_chamber

    360-degree image of an acoustic anechoic chamber 360-degree image of an electromagnetic anechoic chamber. An anechoic chamber (an-echoic meaning "non-reflective" or "without echoes") is a room designed to stop reflections or echoes of either sound or electromagnetic waves. They are also often isolated from energy entering from their surroundings.