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quality” sound, but at a fraction of the size of normal audio files. MP3 conversion of an audio track from CD/CF can reduce the file size by approximately 10:1 ratio (Sampling: 44.1 kHz, Bit rate: 128 kbps) with virtually no perceptible loss in quality. MP3 compression removes the redundant and irrelevant parts of a sound signal that the human ear doesn’t hear. ● WMA — Windows Media Audio (WMA) is a compressed audio format created by Mi- crosoft as an alternative to MP3. The WMA codec offers greater file compression than the MP3 codec, enabling storage of more digital audio tracks in the same amount of space when compared to MP3s at the same level of quality. ● Bit rate — Bit rate denotes the number of bits per second used by a digital music files. The size and quality of a compressed digital audio file is determined by the bit rate used when encoding the file. ● Sampling frequency — Sampling frequency is the rate at which the samples of a signal are converted from analog to digital (A/D conversion) per second. ● Multisession — Multisession is one of the methods for writing data to media. Writing data once to the media is called a single session, and writing more than once is called a multisession. ● ID3/WMA Tag — The ID3/WMA tag is the part of the encoded MP3 or WMA file that con- tains information about the digital music file such as song title, artist, album title, encod- ing bit rate, track time duration, etc. ID3 tag information is displayed on the Album/Artist/Track title line on the display. * Windows T and Windows MediaT are regis- tered trademarks or trademarks of Microsoft Corporation in the United States of America and/or other countries. CompactFlash is a trademark of SanDisk Corporation in the United States of America and/or other countries. Playback order : WMA files is as illustrated. Playback order chart SAA1025 4-38 Monitor, climate, audio, phone and voice recognition systems w — — 05/14/09—pattie X |