S888Wheel wrote:
I made my claim about 6 hz with the
assumption that it would be taken within the context of high end
audio and the recording and playback of music.
So far so good.
Clearly some people on
RAHE find 6 hz tones useful for things that exist outside of those
parameters.
The other, non-audio related uses of infrasonic sound are irrelevant. Just
another straw man argument.
Fourier analysis proves that any musical sound can be analyzed and found to
be a collection of tones.
http://music.arts.uci.edu/dobrian/digitalaudio.htm
High quality recordings of a number of musical works, both classical and
popular, have been analyzed and found to contain substantial content at
frequencies at or near 6 Hz, and lower.
http://www.smr-home-theatre.org/Sub-...How-Low-2.html
Furthermore, it has been found that the means generally used to reduce or
eliminate 6 Hz tones from recordings have reliably audible effects on the
rest of the recording.
The Subjective Importance of Uniform Group Delay at Low Frequencies
Author(s): Fincham, L. R.
Publication: JAES Volume 33 Number 6 pp. 436·439; June 1985
Abstract: Analog recordings always have high group delay at low frequencies
due to the combined effects of all the components in the record/replay
chain, and in particular the analog recorder. Digital recorders now make it
practical to remove much of this group delay. It is discussed whether it is
worthwhile to produce a record/replay chain having uniform
High fidelity is about approaching the quality of the original sound that
was recorded, as closely as possible. Eliminating musical content, and/or
intentially making alterations that adversely affect sound quality seem to
be the opposite of high fidelity.
http://encyclopedia.thefreedictionar...igh%20fidelity
http://en.wikipedia.org/wiki/High_fidelity
Now if you wish to discuss the topic of what I think is
useful in the way of low frequency extension we must establish the
parameters of use.
The stated context of high end audio and recording and playback of music
seems to be just fine.