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The New Science

P

Phil Allison

Jan 1, 1970
0
Hi to all,

this week in my travels around that open sewer known euphemistically
as "Usenet" I have been informed in no uncertain terms that the laws of
nature are not as I had been taught, experienced or long presumed.

Here a few examples.


1. Air is non linear. Yep - the good old air we breathe creates sum and
difference intermodulation products if two or more frequencies are present.
This "fact" is used by pipe organists to produce extra low and high notes
beyond the range of their instruments - but strangely by no-body else.
How mysterious.

2. That third harmonic distortion in an amp sounds "discordant" since
three times the frequency of a given note in the musical scale does not sit
exactly on top of another higher note - but is about 0.5 % to 0.1% out.
The fact that real instruments produce third and other odd harmonics that do
not comply with the tempered musical scale is an issue the authorities have
yet to catch up with.

3. That room reverberation creates all manner of strange harmonic
frequencies - due to the aforesaid non-linearity of the air. The non
linearity of solid walls is involved too it seems.

4. That valve push-pull amplifiers are called "class B" and not "class AB"
although the valves idle at between 5 and 12 watts dissipation. This is
under the never before published idle dissipation limit for class AB
apparently.

5. That the code letters "A" and "B" when seen on a pot have no definable
meaning - since no agreed standard exists. Also few if any pots have such
codes on them. I must be seeing flukish arrangements of fly spots it seems.

6. One must NEVER connect the black or negative speaker terminals of any
audio power amplifier together - or very bad things will happen including
oscillations, distortion and damage. Also that such terminals are never
grounds or PSU zero points. This has to be true since it came from a
professional electronics engineer and amp designer.

7. That using a common wire to connect the ground returns of two speakers
to the output channels of a stereo amp will cause intermodulation
istortion - in a similar way to the air as mentioned above. So now coper
wire is non-linear too. Is nothing sacred ??


Now, dear readers, I know all the above "science" is **true** because
the folk who explained it to me assured me they were well qualified experts.
They used examples from their own experience to PROVE it too - how can you
deny that ??

Maybe I should put together a text book of these new scientific
principles - so different to all the old ones that were once so dear to my
heart - do you reckon it would sell ??

In what section of a bookshop ????




............. Phil
 
T

the swan

Jan 1, 1970
0
Phil said:
Hi to all,

this week in my travels around that open sewer known euphemistically
as "Usenet" I have been informed in no uncertain terms that the laws of
nature are not as I had been taught, experienced or long presumed.

Here a few examples.


1. Air is non linear. Yep - the good old air we breathe creates sum and
difference intermodulation products if two or more frequencies are present.
This "fact" is used by pipe organists to produce extra low and high notes
beyond the range of their instruments - but strangely by no-body else.
How mysterious.

2. That third harmonic distortion in an amp sounds "discordant" since
three times the frequency of a given note in the musical scale does not sit
exactly on top of another higher note - but is about 0.5 % to 0.1% out.
The fact that real instruments produce third and other odd harmonics that do
not comply with the tempered musical scale is an issue the authorities have
yet to catch up with.

3. That room reverberation creates all manner of strange harmonic
frequencies - due to the aforesaid non-linearity of the air. The non
linearity of solid walls is involved too it seems.

4. That valve push-pull amplifiers are called "class B" and not "class AB"
although the valves idle at between 5 and 12 watts dissipation. This is
under the never before published idle dissipation limit for class AB
apparently.

5. That the code letters "A" and "B" when seen on a pot have no definable
meaning - since no agreed standard exists. Also few if any pots have such
codes on them. I must be seeing flukish arrangements of fly spots it seems.

6. One must NEVER connect the black or negative speaker terminals of any
audio power amplifier together - or very bad things will happen including
oscillations, distortion and damage. Also that such terminals are never
grounds or PSU zero points. This has to be true since it came from a
professional electronics engineer and amp designer.

7. That using a common wire to connect the ground returns of two speakers
to the output channels of a stereo amp will cause intermodulation
istortion - in a similar way to the air as mentioned above. So now coper
wire is non-linear too. Is nothing sacred ??


Now, dear readers, I know all the above "science" is **true** because
the folk who explained it to me assured me they were well qualified experts.
They used examples from their own experience to PROVE it too - how can you
deny that ??

Maybe I should put together a text book of these new scientific
principles - so different to all the old ones that were once so dear to my
heart - do you reckon it would sell ??

If you credit each piece of wisdom with the author's full details - I am
sure each of the authors would buy a copy ...
In what section of a bookshop ????

How about in the occult section, right next to other authoritive works
such as "Harmonic 695: The UFO and Anti-Gravity". Mind boggling.
 
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