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These errors are termed artifacts (or sound/sonic artifacts), and may be pleasing or displeasing. A sonic artifact is sometimes a type of digital artifact , and in some cases is the result of data compression (not to be confused with dynamic range compression , which also may create sonic artifacts).
When recording through an audio interface, insufficient computer performance or audio driver issues can cause clicks, pops and dropouts. They can result from improper clock sources [3] and buffer size. Also, clicks can be caused by electric devices near the computer or by faulty audio or mains cables. [4]
A compression artifact (or artefact) is a noticeable distortion of media (including images, audio, and video) caused by the application of lossy compression. Lossy data compression involves discarding some of the media's data so that it becomes small enough to be stored within the desired disk space or transmitted ( streamed ) within the ...
Blocking – low bitrate artifacts; Ringing – low and medium bitrates artifact, especially on animated cartoons; Blocks (slices) damage in case of losses in digital transmission channel or disk injury (scratches on DVD) Different suppression methods are used to remove all these artifacts from video.
Anti-aliasing means removing signal components that have a higher frequency than is able to be properly resolved by the recording (or sampling) device. This removal is done before (re)sampling at a lower resolution. When sampling is performed without removing this part of the signal, it causes undesirable artifacts such as black-and-white noise.
Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio.
The FDIC is an independent government agency charged with maintaining stability and public confidence in the U.S. financial system and providing insurance on consumer deposit accounts.
Avoiding pre-echo is a substantial design difficulty in transform domain lossy audio codecs such as MP3, MPEG-4 AAC, and Vorbis. It is also one of the problems encountered in digital room correction algorithms and frequency domain filters in general ( denoising by spectral subtraction, equalization , and others).