In article ,
recursor
wrote:
On 12/24/2011 09:54 AM, Jim Lesurf wrote:
In articleVvWdnfBXheId12jTnZ2dnUVZ8gadnZ2d@brightvie w.co.uk,
recursor wrote:


All fine in terms of 'pitch', but misleading if anyone then jumps to
the (generally wrong) conclusion that the above means that most of the
emitted energy is always at the fundamental frequency for that pitch.

Look at the ideas of 'place theory' and 'temporal theory' for human
pitch perception. These outline how human hearing detects the details
of the waveform/spectrum to 'hear' a lower frequency - which may not
be present at all.

The human ear/brain combo may very well construct notes which aren't
there. However the ear can hear down to 50 Hz and good vinyl recordings
can reproduce the 50 Hz frequencies made by the double bass and the
celtic harp.

I'm not clear why you believe that about "vinyl", beyond basing it on your
earlier assertion about what you 'hear' when listening to something like a
'double' bassoon on LP. As has been pointed out, the fundamental may be
absent or attenuated yet still sound OK because the fundamental may play
little or no part in the perceived sound when its frequency and level are
low even for the live instrument.

No doubt in the recording studio superior bass
amplification techniques/equipment are needed for this to happen but my
part in this thread was only a reply to Arny who said that notes below
100 Hz are not present on vinyl...which is ********.

Erm...You may have forgotten that you also wrote

On 22 Dec in uk.rec.audio, recursor wrote:

Well I wonder where I got the idea that they can accurately reproduce
low frequency down to 50 hz. All these years I must have been mistaken.

and

On 22 Dec in uk.rec.audio, recursor wrote:
I said I believed my ears because I was hearing the low notes of the
double bassoon being accurately reproduced.

So it isn't quite correct to now say that your "only part in this thread
was only a reply to Arny who said that notes below 100 Hz are not present
on vinyl." You have explicitly based what you say to the above assertion
about hearing the "double bassoon" on LP... Which - as been pointed out -
may not require the "vinyl" to "accurately" represent the fundamental.

Slainte,

Jim

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