2010 Mazda CX-7 Owner's Manual - Page 262

CX-7_8AS7-EA-09E_Edition2 Page262 Friday, June 5 2009 2:25 PM Black plate (262,1) Interior Comfort Audio System Specialized glossary MP3 Abbreviation for "MPEG Audio Layer 3". A technical standard for audio compression as decided by an ISO (International Organization for Standardization) MPEG working group. Use of MP3 allows for audio data to be compressed to approximately a tenth of the source data size. ISO 9660 An international standard for logical formatting of CD-ROM files and folders. It is divided into three separate levels based on differences in file naming procedures, data configuration and other characteristics. Multi-session A session is the complete amount of data recorded from the beginning to the end of a single period of CD-ROM, CD-R/CDRW data recording. Multi-session refers to the existence of data from two or more sessions on a single disc. Sampling Refers to the process of encoding analog audio data at regular intervals and converting it to digital data. The sampling rate refers to the number of times a sample is taken in one second and is expressed in Hz units. Increasing the sampling rate improves the sound quality but also increases the data size. Bit rate Refers to the volume of data per second, expressed in bps (bits per second). Generally, the larger the number of the transfer bit rate when compressing an MP3 file, the more information regarding musical reproduction it carries, and therefore the better the sound quality. Packet writing A general term for the method, similar to that used for floppy discs or hard drives, of recording the required file in a single increment on a CD-R and similar. ID3 Tag ID3 tag is a method for storing information related to the music in an MP3 file. Information such as track, artist and album name can be stored. This content can be freely edited using ID3 editing function software. VBR Abbreviation for Variable Bit Rate. While CBR (Constant Bit Rate) is generally used, VBR varies the bit rate for audio compression according to compression conditions and this allows for compression with preference given to sound quality. qOperating Tips for WMA WMA is short for Windows Media Audio and is the audio compression format used by Microsoft. Audio data can be created and stored at a higher compression ratio than MP3. * Microsoft and Windows Media are registered trademarks of Microsoft Corporation U.S. in the United States and other countries. 6-22 Form No.8AS7-EA-09E