Re: What's a transient?

On Thu, 27 Apr 2006 02:15:38 GMT, "Ian Iveson"
<IanIveson.home@xxxxxxxxxxxxxxxx> wrote:

This distortion is not easily characterised, and its importance is not easily
quantified, although it is easy to measure as an error at any point in time.
The
problem is what to sensibly compare it with to arrive at a proportion.
Relatively speaking, it is probably safe to say that quicker transient
response
equates to less of this distortion, but that says nothing of its character, of
what it sounds like.

In general it doesn't have a sound, although the associated poor
frequency response may.

You are wrong, as above. As long as the input is changing, and for some time
after any change, there will be error arising from the system's transient
response.

Not true. So long as the musical transient is slower than the
transient response of the amplifier, there will be no effect whatever
due to the transient response of the amplifier.

No, you are wrong if you include the signal processing in the path from sound to
perception. It's the same with sight...if you hold your eyes still you can't see
stationary things. All of our senses are relative, and need to be if you think
about it.

Allegedly true of dinosaurs, but you are saying that if we stand
perfectly still, the Mona Lisa will disappear. Untrue.

I would say an amp should be no faster than it is beautiful. To the extent
that
it must have some transient response, it should be elegant...simple and
direct,
but like a flute rather than the saxophone or piano seemingly preferred by
some.

Not just quick, but lithe.

Zero meaning to this paragraph, I'm afraid.

None that you have been able to divine, apparently.

None that any rational person could divine...

An amplifier should have a transient (and slew rate) response capable
of dealing with a full power signal at the highest frequency of which
the source is capable. Any more is nice but unnecessary.

As for what this has to do with valves, it's harder to get a quick circuit
when
it must include parallel capacitance and series inductance . As in mechanical
engineering, the direction of progress is always towards stiffer, lighter
structures. But there again, engineers don't have to make music.


ANd what have valves to do with parallel capacitances and series
inductances? You seem a little confused here.

Most valve circuits have both.

So do SS circuits. So what?
--

Stewart Pinkerton | Music is Art - Audio is Engineering
.

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