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2. Pillarbox - Wikipedia

   en.wikipedia.org/wiki/Pillarbox

   Vertical video with 'echo' pillarboxing. A limited number of local stations also apply custom pillarboxes, but most have removed them with both the advent of all-HD schedules and customer complaints about erroneous technical information in PSIP data. Some TV shows present an "echo" of the edges of the program video in the sidebars, usually blurred.

3. Echo removal - Wikipedia

   en.wikipedia.org/wiki/Echo_removal

   Echo removal is the process of removing echo and reverberation artifacts from audio signals. The reverberation is typically modeled as the convolution of a (sometimes time-varying) impulse response with a hypothetical clean input signal, where both the clean input signal (which is to be recovered) and the impulse response are unknown.

4. 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 ...

5. Ringing artifacts - Wikipedia

   en.wikipedia.org/wiki/Ringing_artifacts

   The main cause of ringing artifacts is overshoot and oscillations in the step response of a filter.. The main cause of ringing artifacts is due to a signal being bandlimited (specifically, not having high frequencies) or passed through a low-pass filter; this is the frequency domain description.

6. Sound reinforcement system - Wikipedia

   en.wikipedia.org/wiki/Sound_reinforcement_system

   Digital effects units may offer multiple pre-set and variable reverb, echo and related effects. Digital loudspeaker management systems offer sound engineers digital delay (to ensure speakers are in sync with each other), limiting, crossover functions, EQ filters, compression and other functions in a single rack-mountable unit.

7. How to add the echo effect on TikTok - AOL

   www.aol.com/lifestyle/add-echo-effect-tiktok...

   Step 3: Hit "Echo" and it will instantly add the effect The effect has inspired the "core memory" and "how a memory sounds" trends so far. The feature can make the audio of any video reverberate ...

8. AOL Mail

   mail.aol.com/d?reason=invalid_cred

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Signal reflection - Wikipedia

   en.wikipedia.org/wiki/Signal_reflection

   When a returning reflection strikes another discontinuity, some of the signal rebounds in the original signal direction, creating multiple echo effects. These forward echoes strike the receiver at different intervals making it difficult for the receiver to accurately detect data values on the signal. The effects can resemble those of jitter.