Glossary of terms for MP3 and MP4 Players
- Storage Capacity
- Built-in Memory
- Card Slot
- Number of Songs
- Screen Size
- FM Radio
- Interface
- Video Format
- Audio Format
Storage Capacity
Storage Capacity refers to the amount of memory included with the MP3 or MP4 player for storage and it is measured in either Megabytes (Mb) or Gigabytes (Gb). 1 Gb is equivalent to 1024 Mb.
Built-in Memory
Built-in Memory is the internal memory of inside the MP3 or MP4 player used for storage. Larger memory means longer playing time, e.g. 32 Mb gives about 30 minutes of playing time.
Card Slot
MP3 or MP4 players can use different types of cards to store music, pictures and video, like Secure Digital (SD), Memory Sticks, Compact Flash (CF), etc.
Number of Songs
Number of Songs refers to the amount of songs that can be stored on the player and it is calculated on a medium song size of 4 Mb (4 minutes and 128 kbps enconding).
Screen Size
Screen Size is the length of display, measured diagonally in inches.
FM Radio
Specifies if the MP3 or MP4 player does or does not have an FM tuner for listening to local radio.
Interface
The interface represents type of connector used for connecting the MP3 or MP4 player to a computer to transfer files. The connector can be USB 1.1, USB 2.0 or firewire (IEEE 1394).
Video Format
Video Format represents the type of video files that a device can play; can be: MPEG-1 (Moving Picture Experts Group-1), MPEG-2 (Moving Picture Experts Group-2), MPEG-4 (Moving Picture Experts Group-4), AVI (Audio Video Interleave), DivX (Digital Video Express), 3GP (simplified version of the MP4), H.264, MOV (QuickTime file format), WMV (Windows Media Video), XviD.
Audio Format
Audio Format represents the types of audio files that a device can play; can be: AAC (Advanced Audio Coding), AIFF (Audio Interchange File Format ), Apple Lossless, ASF (Advanced Systems Format), FLAC (Free Lossless Audio Codec), MID, MP3 (MPEG-1 Audio Layer 3), MP4 (MPEG-4 Part 14), OGG, WAW (Waveform audio format), WMA (Windows Media Audio).