Client-side framework for web-app with good audio support

I'm trying to create a client-side web app that generates music procedurally using some user-input parameters, so I'm looking for a framework (e.g. Flash, Silverlight etc.) that has the capability to play audio at a specified pitch. Whether it is playing a WAV/MP3 file, using MIDI output, or just playing beeps doesn't really matter -- I just need something that will enable me to generate arbitrary music client-side.

I've done a bit of searching and it appears that Flash might have the ability to change pitch with the help of a third-part plugin, but I couldn't find anything similar for Sil开发者_开发知识库verlight. I can go a try all them out manually if need be, but I thought I'd ask here first just in case anyone had tried something like this before.

Thanks in advance

Not sure about Silverlight, but sure as hell you can do it in Flash. Just this week Audiotool has been released:

http://www.audiotool.com/

Don't fool yourself though, that's a state-of-the-art application that requires squeezing every single bit of the Flash Player. You can read about what it takes to build it here:

http://blog.joa-ebert.com/2010/03/06/compiling-actionscript-in-the-enterprise/

Cheers,

Juan