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Subject: Re: [motm] Moog filter plots

From: "Paul Schreiber" <synth1@...>
Date: 2002-05-22

>
> Oddly, if you just look at the graphs, it looks like the Doepfer is most Moogly. The MOTM vs.
ModCan THD+N (what's N?)

Noise

> graph doesn't clearly indicate which line represents which filter (or I don't know how to read
it),


Modcan on top, MOTM on the bottom


>and neither line looks like the MOTM line in other graphs (no sharp dip at 5k, for example).

This was due to setting the MOTM-490 to be as close to the gain/resonance/frequency response of
the Modcan as possible. This holds true for all the graphs.



> Also what's the magenta line in the 2nd graph in the freq_2 document (in which the MOTM line
doesn't look like other MOTM lines either)?

The technical term is "Paul hit the wrong icon." Or in Tandy-speak "The fault was a loose nut
behind the keyboard."

>
> Were all these filters fed ∗exactly∗ the same source?

Yep, a 0.000015% THD +N sine out of my Audio Precision at 1V RMS (about 3V pk-pk).

>
> Ultimately, though, lines don't mean as much as what your ears tell you, anyway. :)
>
True, but I can "hear" these graphs as well :)

Paul S.