Re: Capacitors in the signal chain
- From: "Arny Krueger" <arnyk@xxxxxxxxxx>
- Date: Mon, 17 Apr 2006 11:25:31 -0400
"Ethan Winer" <ethanw at ethanwiner dot com> wrote in
message news:-qWdnbAHzKlrA97ZnZ2dneKdnZydnZ2d@xxxxxxxxxxxx
David,
You already got the right answers from Gunnar and
Richard. Maybe I can add a little.
Is there a reason why the 'smearing' quality of the
capacitor matters more at the input to the preamp <
You were correct to put "smearing" in quotes because
there's no such parameter. Only four parameters are
needed to define all of audio:
* Signal to Noise Ratio
* Distortion
* Frequency Response
* Time-Based Errors (wow, flutter, jitter)
That's it! There's no such thing as smearing, musicality
(one of my personal favorites), or any of the other
flowery but useless terms audiophiles and even some audio
pros toss around as if they actually meant something.
This is not to say that all gear sounds the same and
specs the same. But anything that does matter can be
easily quantified using standard audio terms and
parameters. And as an acoustics professional I can say
for certain that the advice you got to treat your room is
right on the money. That's what's so ironic about some
people's misguided fixation with things that don't matter
(changing one perfectly good capacitor for another) while
they ignore numerous peaks and deep nulls in their room.
The usual list big 4 audio parameters are a little different from yours,
Ethan:
1. Noise (correlated, uncorrelated - correlated noise is often called
"nonlinear distortion")
2. nonlinear distortion (THD, IM)
3. linear distortion (FR, phase shift)
4. bandwidth
They often can be contracted into a short list of two:
(a) dynamic range (like THD+N)
(b) bandwidth (FR in common minimum phase systems exactly preducts phase
shift)
.
- References:
- Capacitors in the signal chain
- From: dhs
- Re: Capacitors in the signal chain
- From: Ethan Winer
- Capacitors in the signal chain
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