The musician Jeremy Parsons has his own entirely separate website.

Favourite Music

Digital Music Technology

Digital music can be confusing because there are two parts: firstly, there are containers for sound and video and, secondly, there are a range of codecs (enCODers and DECoders) that compress and uncompress the media within the containers. Quicktime, AVI and MPEG are common proprietary containers, and you will see files with extensions like .qt, .mov, .avi and .mp3, .mpeg or .mpg. There seems to be a huge number of codecs in use already and they are being invented all the time so it can be very difficult to know whether any online music or video will be immediately playable on your computer, phone, or PDA. The name of the file, or the format of the container doesn't tell you how the music or video is encoded inside !

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