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14. Basic Information of MP3
1-1. Operating Principle of yepp
Terms and Overview
AV Conversion:
process of converting Analog Data to Digital Data
SAMPLING RATE :
means precision rate of A/D conversion and is indicated in Hz, bit number and
channel number(for CD: 44.1 KHz, 16bit, 2channels)
ENCODING :
process of compressing and converting digital data obtained through A/D conversion
to audio format
Compression rate:
indicated in bps(bit per second)
(For MP3: sound quality of CD level with compression rate of 128kbps)
ENCODING FORMAT :
DECODING :
Process of recovering the digital data encoded to the data before encoding
D/A :
Process of converting Digital Data to Analog Data
Samsung Electronics
MP3 : MPEG Layer3
AAC : MPEG-2 AAC
WMA : Windows Media Audio (Microsoft)
ATRAC(3) : Adaptive TRansform Acoustic Coding (SONY)
EPAC : Enhanced Perceptual Audio Coder (Luscent Technology)
OGG : Ogg Vorbis
14-1

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