Hi Folks,

While prepping for a short presentation about Tam Tam Mini yesterday, I ran 
into a small problem I haven't noticed before. There seems to be an 
intermittent static popping sound when keys are pressed. It is difficult to pin 
down the cause, but it happens across all active keys and all of the XO models 
I have at hand: XO-1, XO-1.5, XO-1.5HS and XO-1.75.  While it doesn't interfere 
with the basic use of Tam Tam, it is definitely a problem that should be looked 
in to. Since it occurs with three different types of keyboard, it seems 
unlikely the keyboard is the problem.


For Musicians, Physics nuts, and Synthesizer gurus only:
I also noted an unusual anomaly with the instrument tuning. I tested the 
intonation of the XO with a small electronic tuner clipped to the lid near the 
speaker. The intonation of the notes is amazingly accurate to an A=440 pitch. 
All of the instruments I tested, except one, were tuned in "C." In other words, 
you play a "Do" on the Z, ",", Q, or I keys, you get the pitch we call "C." 
However, one instrument, the Shehnai, sounds a "G" when Do is played. Since I 
didn't test all 60+ sounds, I can't say for sure there aren't others that do 
this as well.


It is quite well in tune, just with different notes than expected. This could 
be intentional. However, it occurs to me that since G is the first overtone for 
the note C, when the notes for the Shahnai were programmed they may have 
accidentally left out the fundamental toneā€¦ C (and on up the scale) and instead 
used the fifth as the fundamental. Someone might want to take a look at that.


Have fun with these. Let me know if you find out something or if something 
needs to be fixed.


Caryl                                     
_______________________________________________
IAEP -- It's An Education Project (not a laptop project!)
IAEP@lists.sugarlabs.org
http://lists.sugarlabs.org/listinfo/iaep

Reply via email to