Performance of Piano Keyboard morf

I've been hardware-hacking on my speakers and was trying to test them
using PianoKeyboardMorph. I rigged it to offer all 8 octaves and to
transcript the base frequency...

The lower notes sound fine but the higher ones seem to have some issues.
(I am trying to figure out whether this is due to a problem with the
generator or an issue with the hardware mods I have made..)

My new tweeter cuts in somewhere around 2,200 and the custom crossover
is supposed to do the handoff at 3,500

The weird frequencies are:

2217.4 (somewhat modulated...)
3729.3 (Sounds like it's an octive lower than it should be..)
4434.9 (Sounds like there's a roughly 65 hz co-tone..)
5274.0 (sounds lower than it sohuld be. )
7458.0 (loudest frequency seems to be in the mid 100's...)

I think I reset the instrument to default, I think it's playing as an
oboe but this class is not factored especially well and its difficult to
figure out exactly what it's doing...

--
Don't let your schoolwork get in the way of your learning.

http://users.rcn.com/alangrimes/
(for some reason Charleston SC is back in my signature... I hope you
don't learn why...)

Open a SpectrumAnalyzer and you'll see the harmonics are passing the
Nyquist frequency, resulting in aliasing. Suggestions include upping the
the sampling rate of SoundPlayer and adding some kind of low pass filter
(see soundbuffer>>downSampledLowPassFiltering: ).

Eddie

Alan Grimes wrote: