Version 0.93 improves component
value estimation for inductors and capacitors. Versions
prior to 0.93 were good but 0.93 is getting near the
limits of a standard sound card (for components within
its rather limited range).
In preparation for the release,
I tested two 1.5mH inductors. One of them, clearly taped
up and labeled 1.5 was measuring as 1.5mH. The other,
fresh from the factory and labeled 1.50, was measuring
1.77mH. I don't have a good impedance meter so after
scratching my head about this I did something smarter.
I built a parallel circuit using each inductor in turn
with a known 30uF capacitor. It was labeled 30uF and
measured exactly that (so there is some error possible).
I then created a signal and
did two Measure / Impedance tests. Here's a view of
the two. The red curve shows the resonance peak for
the 1.5 factory inductor.
The red curve has its peak
at 697 Hz and the tuned calculator looks like this:
Just FYI the measurement
for the factory (Sidewinder) labeled 1.5mH was
So Speaker Workshop comes