Saturday, March 21, 2009

What is mp3 ?

Through this semester, I found out various things about MP3, for example how to compress the music data or a problem of copyright and so on. In this paper, I show the results of my research. Briefly, MP3 is a compression technology for music data.

Being an open standard, and therefore available to anyone, mp3 has played a major role in the digital music trends. Mp3 is now undoubtedly the most universal and popular audio format in the world. However, if you thought mp3 converter is unnecessary, then you were wrong.

If I try K3b, it does not accept the MP3 format for music CDs, and if I make a data CD there is no way to make it play beyond one piece at a time.

In particular, if your music collection is extensive, you?ll need to balance music quality against quantity. You can store pure CD-quality audio on your iPod, but not very much of it. You can store a huge quantity of highly compressed audio on your iPod, but it won?t sound too great.

Ogg Vorbis is more efficient than MP3 and is the state of the art in audio compression technology. Used properly, recent Ogg Vorbis encoders deliver sound quality surpassing MP3 with all possible bitrates.

The big advantage of MP3, of course, is the compact file size. Audio files which are encoded at 128 kb per second are around 1/11 the size of the original audio file. As well as allowing Internet distribution of songs, the small size of MP3 files has also spawned the MP3 player market.

There are more powerful standards now, such as AAC, but mp3 survives for more than just casual music listening. In fact, it's often the default format used by broadcast and film professionals (including yours truly) for real-time audio transfers over ISDN lines, using multi-thousand dollar dedicated hardware codecs.

As with most things, MP3 is not the only form of audio compression algorithm. There are many other formats for compressing audio but support for these alternative formats is not universal. Therefore, when shopping for a portable audio player, one of the big considerations is the type of files it can handle.

But compressing a whole mix so that there's no dynamic range whatsoever kills the sound of a recording (and here comes my point) far more than data compression does. A lot of contemporary recordings have been degraded far more because of audio compression than because of file compression.

Apple iPod portable music players support the Advance Audio Coding or AAC format. Advance Audio Coding allows up to 48 audio channels and handles higher frequencies better than MP3. The result is better sound with smaller file size.

On top the chart is mp3 to wav converter. WAV (Waveform audio format) is a Microsoft and IBM audio file format standard. The sound quality of wav audio is was good as CD and it can be edited in most audio editing software platforms.

Convert audio to Mp3 files, using audio converter software. Mp3 isn't the only audio format being used. Many download sites offer other formats that many portable mp3 players can't read.

PocketTV works well with Internet Explorer. You can play an MPEG movie by just tapping a link in a web page.

Robertson: MP3 is not just about artists getting out to music fans more directly. It's also about new ways for music fans to manage their music and access music. One of the services we rolled out is called My.MP3.com.

In audio it's almost as simple, using a multi-track audio program that lets you flip the polarity of one channel. I did it in the cross-platform, open source Audacity.