lossy
Compression with loss
Lossy describes a method of data compression that discards some information to achieve smaller file sizes.
The lost data cannot be recovered—unlike lossless compression, which preserves everything.
MP3 audio and JPEG images use lossy compression, sacrificing some quality for dramatic size reduction: The lossy format introduced artifacts in the high frequencies.
Compressed audio encoding
- codecData compression algorithm
- encodingConverting data to format
- bitrateData transfer speed
- quantizationConversion to discrete values
deflate · gzip · H.264 · transcoding · downsampling · entropy · sampling · algorithm
Decline in condition
- deteriorationProcess of declining quality
- irreversibleCannot be undone
- destructiveCausing severe harm
- originalFirst or inventive
source · master · downgrade · reduction · resolution · sharpness · clarity · detail
Visible square artifacts
- aliasingSignal misidentification from undersampling
- bandingAdding decorative strips
- blockinessAngular, chunked appearance
- jaggiesPixelated edge distortion
moire · ringing · mosquito noise · color bleeding · posterization · blur · smearing · ghosting
Comparison of original to reduced
- file sizeStorage space occupied
- bandwidthData transmission capacity
- storageSpace for keeping goods
- fidelityLoyalty or exactness
transparency · efficiency · optimization · sacrifice · compromise · balance · threshold · tolerance
Concealing by covering
- auditory thresholdFaintest sound perceivable
- loudnessPerceived sound intensity
- inaudibleCannot be heard
- imperceptibleCannot be sensed
mp3
Compressed audio encoding
quantization · deflate · gzip · H.264 · transcoding · downsampling · entropy · sampling · algorithm · pack
degradation
Decline in condition
- deteriorationProcess of declining quality
- irreversibleCannot be undone
- destructiveCausing severe harm
original · source · master · downgrade · reduction · resolution · sharpness · clarity · detail · accuracy
pixelation
Visible square artifacts
- aliasingSignal misidentification from undersampling
- bandingAdding decorative strips
- blockinessAngular, chunked appearance
jaggies · moire · ringing · mosquito noise · color bleeding · posterization · blur · smearing · ghosting · muddiness
compression ratio
Comparison of original to reduced
fidelity · transparency · efficiency · optimization · sacrifice · compromise · balance · threshold · tolerance · diminishing returns
masking
Concealing by covering
- auditory thresholdFaintest sound perceivable
- loudnessPerceived sound intensity
- inaudibleCannot be heard
lossylossless
Retaining all original information
uncompressed · reversible · undegraded · raw · non-destructive
- get lostDismissive order to leave
- lose weightReduce body mass
- lose your temperAbruptly give into anger
- lose controlFail to maintain composure
- getting lostBecoming unable to navigate
- lost and foundStation for reclaiming mislaid belongings