[lively-kernel] More Sounds

[Dan Ingalls]

Hi Bert -
Yes please do the back-port!  The only changes you need are the one-line interpolation in the mix... method to banish noise and the refs to this.damp to make the high notes ring better. 

The changes for shareable envelopes are vast - I wouldn't bother.

Keyboard sustain will be my next move (easy) but I'm not sure it would be that hard to read a real keyboard. Let's find out how to read USB input - nice for all sorts of fun hardware experiments (have you got your strawberry pie yet? ;-)

   - Dan
--------------
Sent from my iPhone

On Mar 12, 2012, at 4:31 AM, Bert Freudenberg <bert at freudenbergs.de> wrote:

> Very nice indeed!
> 
> The PluckedSound, at least, sounds better than its Squeak predecessor now. I guess we should port back your improvements :) I tried commenting out the Squeak primitive code, and found that with current CPU speeds, it is not needed anymore. On my machine the synthesis, even if interpreted, uses only about 1 % of CPU time per voice.
> 
> One feature missing from the Lively keyboard (that the Squeak one had) is sustaining a note as long as a key is pressed.  And loading MIDI files can't be that far off, right? Only attaching an actual keyboard might proof impractical ...
> 
> - Bert -
> 
> On 11.03.2012, at 10:53, Jens Lincke wrote:
> 
>> wow, this is very clear sound now, nice :-)
>> 
>> Am 11.03.2012 um 03:52 schrieb Dan Ingalls:
>> 
>>> Hi all -
>>> 
>>> For anyone interested, I finally got a chance to finish most of what I wanted to do.  FM synthesis now works - there's a brass-like and clarinet-like patch to try.  Also I added a line of interpolation to banish the noise in PluckedSounds - they're really nice now.  I also refactored everything so that Envelopes are free of streaming state and thus can be shared among notes.
>>> 
>>> Should work in Chrome and Firefox browsers, and even in Safari with the Flash lashup.  
>>> 
>>> 	http://lively-kernel.org/repository/webwerkstatt/users/Dan/SoundTest2.xhtml
>>> 
>>> Enjoy
>>> 
>>>   - Dan
>>> 
> 
> 
> 
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