[Etoys] Etoys supports the DC input

Bert Freudenberg bert at freudenbergs.de
Sun Sep 28 14:12:29 EDT 2008

Am 27.09.2008 um 22:38 schrieb Yoshiki Ohshima:

>  Hello,
>  It's been available for a while, but I'd like to announce that Etoys
> running on XO supports the DC input.
>  To try it:
>  - Launch Etoys.
>  - Drag out the "Object Catalog" from the Tresure Box.
>  - Go to "Multimedia" category in the Object Catalog.
>  - Drag out "WorldStethoscope".
>  - Right click on the instantiated WorldStethoscope and click on the
>    light blue eye icon to open its viewer.
>  - Click on "basic" category header to get a menu, and choose "sound"
>    to go to sound category.
>  - Press Start in the WS.  Some of the numbers in the viewer start
>    changing.  Whisle into the microphone.
>  - Press Menu of WS, and choose "add a graph...".  May be pick
>    "sonogram".
>  - You can open more than one graph on the same data.  Press Menu of
>    WS, and choose "add a graph...".  May be pick "spectrum."  You can
>    see sonogram and spectrum graph (and signal if you open it) at the
>    same time.
>  - Connect a sensor to the jack.  Press "AC" button to switch to
>    "DC".
>  - The tiles can be used in the Etoys tile scripting, so kids can
>    make stuff with them.
> etc., etc.
> The UI needs one more face lift, but it works ok.  If you don't have
> XO, you can still buy the WorldStethoscope hardware
> (http://www.academianetwork.co.jp/service/) that converts the sensor
> output to audio and do effectively the same thing on any computer with
> a sound input.
> The version in 764 has a little bug so that it leaves the mic LED on
> even after quitting Etoys (it is fixed in the latest Joyride).  But it
> is usable.

Hmm, I have not used WorldStethoscope before. Trying it on the XO  
seems to deliver quite arbitrary values. Can I use this to simply move  
an object according to the recorded amplitude?

- Bert -

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