John Curl's Blowtorch preamplifier part II

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http://ia600500.us.archive.org/15/items/HenryBurr/HenryBurr-AllICanDoisJustLoveYou.mp3

Above is an MP3 Of a just under 100 year old cylinder recording. You can hear the noise, recording horn distortion and even wow and flutter. But are we 100 years more advanced?

There was an NPR jazz station in town that recently merged with a NPR Alternate Adult Album station. I used to joke the jazz station only owned three records, they just played them at different speeds!

This week we are adding shelves to the radio station we built as they merge with the local formerly all jazz station. That requires shelving 3000 more CD's. That requires adding 20 of our custom made shelves to the 250 or so they have for their "AAA" existing collection. Of course they try to have most of the in-play music on their hard drives. So it seems my joke was almost true.

P.S. to make space for the added staff they are getting rid of a lot of stuff including many duplicate CD's. I'll be picking many of those up the weekend! :) :) :) !!
 
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Isn´t that exactly what Kunchurs data imply?
AFAIR he measured the upper frequency limit of his participants and even those listeners with a quite limited frequency range could detect a variation in the ~5-6µs region..

I'm still not comfortable with his test design. He doesn't have control over vertical dispersion, but varies it when he moves one driver vs another.

Cheers, jn
 
Yes, it is Pete Seeger at Hudson river concert in autumn 1966.
The second photo is me at Niagara Falls.


Pete' sister, Peggy, was for many years a resident in the UK living with Ewen McColl, father of Nancy - who was so tragically killed in Mexico a few years ago!

This pic of Nancy as I remember her was dragged from the web. [The pic shows her with a normal banjo though she usually used a long-neck and sometimes a fretless instrument.]
 

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...AFAIR he measured the upper frequency limit of his participants and even those listeners with a quite limited frequency range could detect a variation in the ~5-6µs region.

But in the production of music content- do we have another chance to enhance the temporal resolution as to raise the sampling frequency?
...

Kunchur’s 2007 paper has a number of problems with the signal theory which I can pick out quite easily

there is no problem getting a periodic signal from a DAC
the assertion to the contrary is just bizarre to anyone familiar with analog/digital Signal Theory – “looking at the points” in a sound editor is a logical fail – the reconstruction/anti-imaging filter output is the waveform to look at


The later slide presentation’s psychoacoustic model proposal goes beyond my meager psychoacoustics knowledge ability to judge credibility
but I can ceratainly spot the correlation argument he uses
 
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