Holographic imaging

Roger,

The reason you can’t see it with a THD analyzer is because it is way too subtle to show up. If somehow you alter the gain/velocity by a factor of 2:1 double the velocity! Then your 1khz signal will shift up to 2khz. A full octave away! That is represented by the spike you see on a spectrum analyzer at the 2khz mark. The length of time it spends at this accelerated velocity will determine the size of the spike.

Within the statement above occurs a contradiction. This one (the 3rd I have encountered since I began engaging in this conversation), has the spike "too subtle to show up" while in nearly the same breath is apparently visible at "the 2KHz mark". So which is it- really?

"Perhaps it'd be best to just sell the H-Cat without trying to attribute it's effectiveness to an unverifiable theory..."

Ignorance is bliss if it sounds good.

Unsound,

Bingo!

Yes - exactly.

Roger

Unsound,

I'm assuming your reference to "that the knob on your gear" is the Wavefront Timing Control (now on the remote).

The internal Doppler detection and correction happens in real time and in a pure analog mode. These detectors handle the dynamic changes in velocity (on the fly) while the WTC handles the static velocity correction that is the result of all upstream and downstream electronics.

There is of course a limit to the extent it can recover the source dimensional venue. It cannot “fix” a bad recording.

Atmasphere,

I’m sorry the first sentence should have been separated from the second sentence.
And I did not say that a spike was too subtle to show up. I was saying that the reason that the Doppler shift would not show up is because it is not nearly as strong a shift or event to cause enough energy to slide up the spectrum and show up as a spike. In all likelihood it resides so close to the fundamental (spike) as to be hidden by it. A 1khz spike with a smaller 1005 hz (spike) would be difficult to discern.

Roger

My closest experience with holography was at a NYC Stereophile show years ago. The demo was in the David Wilson room and his source was the Basis Evolution turntable. He played a cut from an LP called "Bob and Ray throw a Stereo Spectacular" in which you can "see" the butler's footsteps scale up the stairs.

David Wilson was demonstrating the differences between 3d realism from analog and how its diminished thru redbook.