<div dir="auto"><div><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Den sön 28 mars 2021 15:53 cheater cheater <<a href="mailto:cheater00social@gmail.com">cheater00social@gmail.com</a>> skrev:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
The sound quality you're talking is "roughness" and is measured in Aspers.<br></blockquote></div></div><div dir="auto"><br></div><div dir="auto">I've never heard of aspers before, but it seems to refer to modulation in the lower audio frequencies (20-300 Hz) rather than harmonic distortion: <a href="https://community.sw.siemens.com/s/article/sound-modulation-metrics-fluctuation-strength-and-roughness">https://community.sw.siemens.com/s/article/sound-modulation-metrics-fluctuation-strength-and-roughness</a></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Tiny capacitors have a very large voltage gradient across a very short<br>
casing. They're probably self-modulating, i.e higher voltage means<br>
less capacitance. Essentially self-filter-FM.<br>
...<br>Fully-balanced synths anyone?</blockquote></div></div><div dir="auto"><br></div><div dir="auto">Moog ladder filter? (-:</div><div dir="auto"><br></div><div dir="auto">But since the self-modulation goes in the other direction for negative voltages, a straight-up balanced design wouldn't help much.</div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">One more option is to add self-filter-fm cancellation to your filter,<br>
and have it as part of the tuning or calibration procedure.<br></blockquote></div></div><div dir="auto"><br></div><div dir="auto">Some research into the nonlinearities would be essential. Or why not go for C0G instead. :-)</div><div dir="auto"><br></div><div dir="auto">/mr</div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"></blockquote></div></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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