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Lossy compression - Wikipedia
Lossy compression is most commonly used to compress multimedia data (audio, video, and images), especially in applications such as streaming media and internet telephony. By contrast, lossless compression is typically required for text and data files, such as bank records and text articles. See more
In information technology, lossy compression or irreversible compression is the class of data compression methods that uses inexact approximations and partial data discarding to represent the content. These techniques … See more
It is possible to compress many types of digital data in a way that reduces the size of a computer file needed to store it, or the bandwidth needed to transmit it, with no loss of the full … See more
Lossy compression formats suffer from generation loss: repeatedly compressing and decompressing the file will cause it to progressively lose … See more
An important caveat about lossy compression (formally transcoding), is that editing lossily compressed files causes digital generation loss from … See more
1974Nasir Ahmed, T. Natarajan and K. R. Rao publish the first paper on discrete cosine transform (DCT), a method for lossy compression of images, audio, and video.1988The Joint Photographic Experts Group (JPEG) is formed to create a standard for image compression.1992MPEG-1 Part 2, a standard for lossy video compression, is released.1993Dolby Digital (AC-3), a standard for lossy audio compression, is released.1994MPEG-2 Part 2 (H.262), an improved standard for lossy video compression, is released.1997MP3, a popular format for lossy audio compression, is standardized.2003Advanced Audio Coding (AAC), an improved standard for lossy audio compression, is released.2003MPEG-4 Part 2 (H.263), an enhanced standard for lossy video compression, is released.2015High Efficiency Video Coding (HEVC / H.265), a state-of-the-art standard for lossy video compression, is released.Some forms of lossy compression can be thought of as an application of transform coding, which is a type of data compression used for digital images, digital audio See more
Graphics
Image
• Discrete cosine transform (DCT)
• Wavelet compression
• Cartesian Perceptual Compression, also known as CPC See moreWikipedia text under CC-BY-SA license What Is Lossy Audio Compression? - Lifewire
Lossy compression (article) | Khan Academy
Audio compression: How does it work? Why does it …
WebSep 15, 2021 · For starters, almost all audio compression codecs are lossy—as opposed to lossless—meaning that some information is removed and discarded. This data reduction is not considered to be a …
Audio Formats: Lossy vs. Lossless Audio Compression
MP3, AAC, WAV, FLAC: all the audio file formats …
WebJul 25, 2022 · A lossy, open-source alternative to MP3 and AAC, unrestricted by patents. The file format used (at 320kbps) in Spotify streaming. WAV (hi-res): The standard format in which all CDs are …
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WebApr 14, 2017 · Lossy compression is a one-way technique that throws away non-critical data to save space. These techniques are the most common methods used to compress audio files, showing up in MP3, …
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