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34 Cards in this Set
- Front
- Back
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What is a Codec?
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algorithm used for data reduction
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What does MLP stand for?
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Meridian lossless packing
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This type of coding tries to fool our ears by psychoacoustics.
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perceptual coding
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What does CODEC stand for?
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endCODE/DECode
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A Codec that uses data manipulation is...
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lossless
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A Codec that uses ear manipulation is..
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lossy
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Lossless data reduction uses what type of coding?
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Entropy Coding
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Entropy coding takes adavantage of the ________ nature of waveforms by encoding ____________ redundant data into smaller words.
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Periodic, redundant
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What are some kinds of lossless codecs?
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Apple Lossless, Windows media lossless, Monkey's Audio, FLAC
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Lossy reduction uses what type of encoding?
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Perceptual coding
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Perceptual coding tries to fool your ear based on the laws of....
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psychoacoustics
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This type of perceptual coding divides audio into short segments of a few hundred samples, each frame is split into multiple frequency bands where fewer bits are spent on the unimportant bands.
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Frequency coding
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In regards to perceptual coding, this is used to determine the relative importance of bands.
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Masking
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This saves bits where information is redundant, especially at high frequencies.
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Interchannel Redundancy
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This type of coding uses an algorithm that predicts the next sample by analyzing previous behavior.
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Predictive analysis/differential coding
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Constant bit rate (CBR) encoding defines bandwidth, not _____
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quality
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CBR encoding is better for _______ than downloading
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streaming
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Variable Bit Rate encoding defines _______, not bandwidth.
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quality
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VBR encoding is better for ________, not streaming
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downloading
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DVD-5 is...
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single sided/single layer
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DVD 9 is....
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single sided/dual layer
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DVD 10 is....
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double sided/single layer
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DVD 14 is....
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double sided/mixed layer
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DVD 18 is...
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double sided/dual layer
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DVD-5 capacity is...
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4.38 GB
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DVD-9 capacity is...
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7.95 GB
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DVD-10 capacity is...
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8.75 GB
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DVD-14 capacity is...
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12.33 GB
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DVD-18 capacity is...
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15.9 GB
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How many streams of audio are available on a DVD?
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8
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How many channels per stream are availalbe on a DVD?
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8
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What audio formats must DVD's have?
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PCM and Dolby Digital
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What are some additional audio formats for DVD?
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SDDS, DTS, MPEG
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MLP uses channel groups to do what?
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mix and match resolutions simultaneously
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