Is it possible to play synthesized sound in the browser using JavaScript?

Question

I just came across a Nintendo emulator written entirely in JavaScript on the interwebs, but it doesn't have sound. It got me thinking: Is there any way to synthesize sound in the browser using JavaScript and then play it? If it's not possible in general, then are there any Safari/Opera/FireFox/IE/Etc. extensions that would make it possible?

I am not asking about techniques for synthesizing sound, just techniques for playing sounds that have been synthesized by code running in the browser.

Answer 1

I would imagine your best bet is to have Javascript talk to Flash using ExternalInterface (http://www.adobe.com/devnet/flash/articles/external_interface.html). Flash now has a way of transfering data between the sound buffers and a general purpose ByteArray classs.

http://www.adobe.com/devnet/flash/articles/dynamic_sound_generation/

You can develop Flash for free using the Flex SDK http://www.adobe.com/products/flex/.