2007 Nissan Quest Owner's Manual - Page 210

● If the CD cannot be played, one of the following messages will be displayed. CHECK DISC: ● Confirm that the CD is inserted correctly (the label side is facing up, etc.). ● Confirm that the CD is not bent or warped and it is free of scratches. PRESS EJECT: This is an error due to excessive temperature inside the player. Remove the CD by pressing the EJECT button. After a short time, reinsert the CD. The CD can be played when the temperature of the player returns to normal. UNPLAYABLE: The file is unplayable in this audio system (only MP3 CD). audio track from CD-ROM can reduce the file size by approximately a 10:1 ratio 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. ● Bit rate - Bit rate denotes the number of bits per second used by a digital music file. 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. ● ID3 tag - The ID3 tag is the part of the encoded MP3 file that contains information about the digital music file such as song title, artist, album title, encoding bit rate, track time duration, etc. ID3 tag information is displayed on the Album/Artist/Track title line on the display. Playback order chart Playback order: Compact Disc with MP3 Terms: ● MP3 - MP3 is short for Moving Pictures Experts Group Audio Layer 3. MP3 is the most well-known compressed digital audio file format. This format allows for near "CD quality" sound, but at a fraction of the size of normal audio files. MP3 conversion of an WHA0543 Playback order of the CD with compressed files (MP3) is as illustrated. ● The names of folders not containing MP3 files are not shown in the display. 4-46 Display screen, heater, air conditioner, audio and phone systems