Alpine CDA-7878R Supported playback sampling rates and bit rates, ID3 tags, Producing MP3 discs

•Supported playback sampling rates and bit rates

Sampling rates: 8 kHz - 44.1 kHz, bit rates: 8 - 320 kbps

Note that for sampling rates such as 11,025 kHz, this device's frame display (Page 11) may not display correctly.

•ID3 tags

This device supports ID3 tag v1.

If ID3 tag data is in an MP3 file, this device can display the title (track title), artist name, and album name ID3 tag data.

This device can only display single-byte alphanumeric characters and the underscore. For non-supported characters, "No Support" is displayed.

This device can only display up to 64 characters for each data item.

•Producing MP3 discs

MP3 files are prepared, then written to a CD-R or CD-RW using CD-R writing software. Each disc can hold up to 255 files/folders (including Root Folders).

•Media supported

The media that this device can play back are CD- ROMs, CD-Rs, and CD-RWs.

•Corresponding File Systems

This device supports discs formatted with ISO9660 Level 1 or Level 2.

Under the ISO9660 standard,

there are some restrictions to remember.

The maximum nested folder depth is 8 (including the root directory). File/folder names are limited to 31 characters (including the extension).

Valid characters for folder/file names are letters A- Z (all caps), numbers 0-9, and '_' (underscore).

This device also can playback discs in Joliet, RockRidge, Apple ISO, and other standards that conform to ISO9660. However, sometimes the file names, folder names, etc. are not displayed correctly.

•Formats supported

This device supports CD-ROM XA, Mixed Mode CD, Enhanced CD (CD-Extra) and Multi-Session. This device can not correctly play back discs recorded with Track At Once or packet writing.

•Order of tracks

Track playback is based on the pathname order used for the files when they were written to the CD.

•When CD audio and MP3 files are both present on a disk, playback starts from Folder No. 2. Also, the track display for CD audio data playback is the track numbers recorded on the disc.

Terminology

Bit rate

This is the "sound" compression rate specified for encoding. The higher the bit rate, the higher the sound quality, but also the larger the files.

Sampling rate

This value shows how many times per second the data is sampled (recorded). For example, music CDs use a sampling rate of 44.1 kHz, so the sound level is sampled (recorded) 44,100 times per second. The higher the sampling rate, the higher the sound quality, but also the larger the volume of data.

Encoding

Converting music CDs, WAVE (AIFF) files, and other sound files into the specified audio compression format.

ID3 tag

Song information such as track titles, artist names, album names, etc., written into MP3 files.

27-EN