[whatwg] Audio canvas?
Dave Singer
singer at apple.com
Wed Jul 16 11:25:15 PDT 2008
At 20:18 +0200 16/07/08, Dr. Markus Walther wrote:
>
>get/setSample(<samplePoint> t, <sampleValue> v, <channel> c).
>
>For the sketched use case - in-browser audio editor -, functions on
>sample regions from {cut/add silence/amplify/fade} would be nice and
>were mentioned as an extended possibility, but that is optional.
>
>I don't understand the reference to MIDI, because my use case has no
>connection to musical notes, it's about arbitrary audio data on
>which MIDI has nothing to say.
get/set sample are 'drawing primitives' that are the equivalent of
get/setting a single pixel in images. Yes, you can draw anything a
pixel at a time, but it's mighty tedious. You might want to lay down
a tone, or some noise, or shape the sound with an envelope, or do a
whole host of other operations at a higher level than
sample-by-sample, just as canvas supports drawing lines, shapes, and
so on. That's all I meant by the reference to MIDI.
--
David Singer
Apple/QuickTime
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