DBT a flawed method for evaluating Hi-Fi ?
 

"Arny Krueger" wrote in message
...
"Iain M Churches" wrote in message

"Stewart Pinkerton" wrote in message
...
(huge snip)

Agreed, I have never found a situation where 0.1% of low-order THD
was audible.

Thanks for that Stewart. This was the information I tried to
elicit from Arny. Even good valve amps can often do quite a
bit better than 0.1% THD (mainly 2H)

IME 0.1% is right on the edge. The best way that I've found is to use the
keys jangling natural sound, high-pass filtered at say 6 KHz. I don't
recall if I could ABX it at just above an amount of second order
nonlinear distortion that would correspond to 0.1 THD, or just below it.
But, it was close.

I have been trying to think what the closest sound equivalent to
jangling keys that one might come across in music (leaving out
Stockhausen for the moment:-) Perhaps a "zizzle" (rivet)
cymbal or a shaken tambourine? Triangles and glockenspiels
cannot really be counted when reproducing a single fundamental,
although they do tend to distort easily.

Iain

DBT a flawed method for evaluating Hi-Fi ?
 

In article , Iain M Churches
wrote:


I have been trying to think what the closest sound equivalent to
jangling keys that one might come across in music (leaving out
Stockhausen for the moment:-) Perhaps a "zizzle" (rivet) cymbal or a
shaken tambourine? Triangles and glockenspiels cannot really be counted
when reproducing a single fundamental, although they do tend to distort
easily.

A friend of mine did once have an LP of indian music that included the
sounds of dancers. The dancers had around their ankles lots of bottle-tops
on a string, that made an interesting sound as they moved their feet.
Perhaps that might do. :-)

First, we have to empty some bottles...

Slainte,

Jim

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DBT a flawed method for evaluating Hi-Fi ?
 

"Jim Lesurf" wrote in message
...
In article , Iain M Churches
wrote:


I have been trying to think what the closest sound equivalent to
jangling keys that one might come across in music (leaving out
Stockhausen for the moment:-) Perhaps a "zizzle" (rivet) cymbal or a
shaken tambourine? Triangles and glockenspiels cannot really be counted
when reproducing a single fundamental, although they do tend to distort
easily.

A friend of mine did once have an LP of indian music that included the
sounds of dancers. The dancers had around their ankles lots of bottle-tops
on a string, that made an interesting sound as they moved their feet.
Perhaps that might do. :-)

First, we have to empty some bottles...

Slainte,

Jim

Do you think that we can put this cost down to legitimate expenses?
I don't know about your accountant, but mine is a tough nut:-)
But it would be fun to try:-)

The second problem, at least for me, is there are not too many
red Indians this close to the arctic circle. There are however, reindeer
by the thousand. The alpha of each group wears a collar with several
bells.

Now let me see, with each bell collar, we would get 300 kilos of
excellent deer-meat, at Euro 15 per kilo.

We could make a profit in this experiment. That is something my
account *would* approve of:-))

Iain