Pocket Clanger Theremin
©2004 SiliconMachines Software
A FreeWare Theremin for your PocketPC
Using this theremin is simplicity itself. Simply move your stylus/finger around on the multicoloured pad with the picture of the clanger on it. Moving horizontally will cause the frequency to change. Moving vertically will cause the amplitude (volume) to change. With skill and practice there's no reason why you can't become a virtuoso at this simple instrument, especially with the help of the QUANTIZE switch (see below).
There are various user adjusted controls:
DELAYTIME ms
This specifies the length of the digital delay line in milliseconds.
DELAYFBK %
This specifies the percentage of the delay line that is fed back. Well it's not actually a percentage as it ranges from 0...128, but I'm sure you get the jist ;)
CLR
Pressing this will clear out the delay line (silence it).
FEED
When this is set ON, the theremins output is routed into the digital delay line.
FREQUENCY QUANTIZE
This control has a little icon underneath it, the icon looks like a musical note on a stave. When this switch is in the ON position, the theremin frequency is always moved to the nearest real musical note.
LOGO ON/OFF
This control has a little icon underneath it, the icon looks like a tiny Clanger.This button designates whether or not the logo graphic, the Clanger, is shown on the theremin pad.
LOWFREQ x 10HZ
This specifies the frequency that will sound when the stylus is at the leftmost position of the theremin pad. As the label suggests the reading of this dial must be multiplied by ten in order to read it as Hz.
HIGHFREQ x 10HZ
This specifies the frequency that will sound when the stylus is at the rightmost position of the theremin pad. As the label suggests the reading of this dial must be multiplied by ten in order to read it as Hz.
RESPONSE
This specifies the speed with which the theremins oscillator responds to the user changing the frequency. A lower value will cause frequency slides to be much slower and more noticable.
Adjusting the controls
You can adjust the various knobs and dials in three ways:
[1]
Tap the blue LED number and then drag horizontally or vertically.
[2]
Tap a purple knob and the drag horizontally or vertically.
[3]
Tap the grey inc/dec buttons for precise adjustments.
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