[sdiy] Voltage Feedback Resistors and Circuit Stability

[Mattias Rickardsson]

On Sat, 14 Nov 2020 at 20:36, Bernard Arthur Hutchins, Jr <bah13 at cornell.edu>
wrote:

>
>
> (1)   In a synthesizer with standard signal levels of +/- 5, has anyone
> even HEARD Johnson noises, let alone been able to attribute it to a
> particular resistance?
>

A polyphonic drum machine with overdrive on each voice, summing into a
master distortion and master compressor - that was practically impossible
to get as silent as expected. Lots of small signal gain in both voices and
on main mix.

+/- 5 V is indeed loud compared to the noise floor, but the real world
isn't so simple! :-)
It's a bit like in digital audio: 16-bit resolution is enough for playback
of a finished musical production, but it's not enough for the tracks,
recordings and treatments that made up that music.

/mr
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