[whatwg] Audio canvas?
ddailey
ddailey at zoominternet.net
Wed Jul 16 14:57:13 PDT 2008
I recall a little app called soundEdit (I think) that ran in the Mac back in
the mid 1980's. I think it was shareware (at least it was ubiquitous).
The editing primitives were fairly cleanly defined and, had a reasonable
metaphoric correspondence to the familiar drawing actions.
There was a thing where you could grab a few seconds of sound and copy it
and paste it; you could drag and drop; you could invert (by just subtracting
each of the tones from a ceiling) you could reverse (by inverting the time
axis). You could even go in with your mouse and drag formants around. It was
pretty cool.
It would not be a major task for someone to standardize such an interface
and I believe any patents would be expired by now.
David
----- Original Message -----
From: "Dave Singer" <singer at apple.com>
To: <whatwg at lists.whatwg.org>
Sent: Wednesday, July 16, 2008 2:25 PM
Subject: Re: [whatwg] Audio canvas?
> 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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