- From: Marcus Geelnard <mage@opera.com>
- Date: Wed, 20 Jun 2012 10:33:23 +0200
- To: public-audio@w3.org
Den 2012-06-19 19:01:44 skrev Joe Turner <joe@oampo.co.uk>: > Hey Chris, > Thanks for the reply, > > On Tue, Jun 19, 2012 at 5:34 PM, Chris Wilson <cwilso@google.com> wrote: >> Hey Joe - I can respond to a couple of these. >> >> On Tue, Jun 19, 2012 at 7:39 AM, Joe Turner <joe@oampo.co.uk> wrote: >>> >>> - Operator nodes, AudioParam nodes >>> >>> Can we have separate nodes for the basic mathematical operators (add, >>> subtract, divide, multiply and modulo), and a way of having the output >>> of an AudioParam as a signal? This would allow all the flexibility >>> needed for scaling, offsetting and combining signals in order to >>> control parameters. I know a bit of trickery can make stuff like this >>> possible at the moment, and it's trivial to implement in JavaScript, >>> but it seems like core functionality to me. >> >> >> Actually, you should be able to do all of these operations by either >> connecting nodes together (add and subtract - might need a waveshaper to >> flip phase for subtract), using gainNodes (multiply and divide) - not >> sure >> about how you'd use modulo. >> > > Yeah - it just seems a little ugly having to use waveshapers for > subtraction, and a scaled non-oscillating oscillator to add a dc > offset to a signal. Operator nodes and some way of outputting > parameters seems like a cleaner way to do this to me. For general operators, I think you'd want to be able to do simple mathematical expressions, such as: y = 2 - 3 / (2 + x) It seems to me that JavaScript is the most logical choice here, since it gives you freedom of expression, especially if you can come up with a small framework to easily create "operator nodes" with one-liners (which I believe should be possible). /Marcus -- Marcus Geelnard Core Graphics Developer Opera Software ASA
Received on Wednesday, 20 June 2012 08:33:57 UTC