Alpine iDA-305 owner manual Terminology, 17-EN

Models: iDA-305

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Terminology

Supported playback sampling rates and bit rates

MP3

 

 

Sampling rates: 48 kHz,

44.1 kHz, 32 kHz, 24 kHz, 22.05 kHz,

 

16 kHz,

12 kHz, 11.025 kHz, 8 kHz

Bit rates:

16 - 320 kbps

WMA

 

 

Sampling rates: 48 kHz,

44.1 kHz, 32 kHz, 24 kHz, 22.05 kHz,

 

16 kHz

 

Bit rates:

16 - 320 kbps

AAC

 

 

Sampling rates: 48 kHz,

44.1 kHz

Bit rates:

16 - 320 kbps

This device may not play back correctly depending on sampling rates.

ID3 tags/WMA tags

This device supports ID3 tag v1 and v2.2.0, v2.3.0 and WMA tag. The following files do not support compression, coding, grouping or non-synchronization.

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

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

The tag information may not be correctly displayed, depending on the contents.

Playing back MP3/WMA/AAC

MP3/WMA/AAC files are prepared, and then written to USB memory. Or, synchronize an MP3/WMA file using Windows Media Player (Ver. 10 or 11), and then forward to the Portable audio player.

A USB memory device can hold up to 10,000 files/1,000 folders (including Root Folders). Playback may not be performed if a USB memory / Portable audio player device exceeds the limitations described above.

Media supported

This device can play back USB memory / Portable audio player media.

Corresponding File Systems

This device supports FAT 12/16/32.

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 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.

Tag

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

Root folder

The root folder is found at the top of the file system. The root folder contains all folders and files.

17-EN

Page 19
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Alpine iDA-305 owner manual Terminology, 17-EN