the hardway....

Haible Juergen Juergen.Haible at nbgm.siemens.de
Wed Mar 15 13:00:06 CET 2000


... but the best part is this:

"The toy piano had no black keys, so we had to make a kind of accurant pitch
bend. This was made just by
using a (1N4002) silicon diode in series with the power supply. When playing
the black keys, the diode is
shorted out, and the pitch is raised due to the higher supply voltage."

Unconventional indeed.

JH.





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