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・ Echo Park (novel)
・ Echo Park Dam
・ Echo Park Film Center
・ Echo Park, Los Angeles
・ Echo Party
・ Echo Pass
・ Echo Passage
・ Echo Peak
・ Echo Peak (disambiguation)
・ Echo Peak (Wyoming)
・ Echo Place
・ Echo Planet
・ Echo Point (TV series)
・ Echo Protocol
・ Echo Ranger
Echo removal
・ Echo River
・ Echo Round His Bones
・ Echo School
・ Echo School (Echo, Utah)
・ Echo School (Oregon)
・ Echo Sonata for Two Unfriendly Groups of Instruments
・ Echo sounding
・ Echo state network
・ Echo Stoa
・ Echo subject
・ Echo Summit
・ Echo suppression and cancellation
・ Echo Taps
・ Echo Township


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Echo removal : ウィキペディア英語版
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. This is an example of an inverse problem. In almost all cases, there is insufficient information in the input signal to uniquely determine a plausible original image, making it an ill-posed problem. This is generally solved by the use of a regularization term to attempt to eliminate implausible solutions.
This problem is analogous to deblurring in the image processing domain.
== See also ==

* Echo suppression and cancellation
* Digital room correction
* Noise reduction
* Linear prediction coder

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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