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Re: [web-audio-api] (OscillatorTypes): Oscillator types are not defined (#104)

From: Olivier Thereaux <notifications@github.com>
Date: Wed, 11 Sep 2013 07:29:38 -0700
To: WebAudio/web-audio-api <web-audio-api@noreply.github.com>
Message-ID: <WebAudio/web-audio-api/issues/104/24244275@github.com>
> [Original comment](https://www.w3.org/Bugs/Public/show_bug.cgi?id=17366#6) by Chris Wilson on W3C Bugzilla. Tue, 03 Sep 2013 21:08:51 GMT

(In reply to [comment #6](#issuecomment-24244250))
> Of course there need to ripples. But do we need to pre-duck the waveform to
> avoid clipping during naive playback, or can that be a problem for content
> authors? This API uses float samples, so there's no problem with excursions
> beyond 1.0 in the oscnode output; it can be adjusted later by a gain node,
> etc.

It certainly CAN be a problem for content authors; if they don't adjust with a gain node at some point in the chain, they WILL get clipping distortion.  On the plus side, a -1 to 1 oscillator is so relatively loud that I expect most developers DO adjust with a gain node already.  :)

Much like de-zippering, it's really in how much we want to try to make the default case sound good, vs. predictability for advanced use.

> > Also, I think that we should decide whether or not it's OK for
> > implementations to use different signal generation methods (e.g. trade
> > quality for performance), or if all implementations must use a specific
> > signal generation method.
> This is a more serious question. Do we mind if synths sound slightly
> different? What about using an oscnode as an lfo, or an animation driver,
> like Chris suggested? Definite values are more important then.

I do want to separate the issues of signal generation method (e.g. anti-aliasing vs simple math) and the ducking/level issue.

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Received on Wednesday, 11 September 2013 14:30:28 UTC

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