[lively-kernel] More Sounds

Bert Freudenberg bert at freudenbergs.de
Mon Mar 12 12:31:12 CET 2012

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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