2006-06-22 02:49:39 · 2 answers · asked by helpme! 3 in Consumer Electronics ➔ Music & Music Players
MP3 is a compression format. It provides a representation of pulse-code modulation-encoded (PCM) audio data in a much smaller size by discarding portions that are considered less important to human hearing (similar to JPEG, a lossy compression for images).
A number of techniques are employed in MP3 to determine which portions of the audio can be discarded, including psychoacoustics. MP3 audio can be compressed with different bit rates, providing a range of tradeoffs between data size and sound quality.
The MP3 format uses a hybrid transformation to transform a time domain signal into a frequency domain signal:
32-band polyphase quadrature filter
36 or 12 tap MDCT; size can be selected independent for sub-band 0...1 and 2...31
Aliasing reduction postprocessing
In terms of the MPEG specifications, AAC (Advanced audio coding) from MPEG-4 is to be the successor of the MP3 format, although there has been a significant movement to create and popularize other audio formats. Nevertheless, any succession is not likely to happen for a significant amount of time due to MP3's overwhelming popularity. MP3 enjoys extremely wide popularity and support, not just by end-users and software but by hardware such as portable media players (referred to as MP3 players) DVD and CD players.
2006-06-22 02:57:34 · answer #1 · answered by Anonymous · 1⤊ 0⤋
it stands for Media Player 3, it's a device which you can store music, or any type of audio on there, you can also buy memory cards for it.
2006-06-22 02:54:08 · answer #2 · answered by lomatar1186 7 · 0⤊ 0⤋