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05-03-2013 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,495
Joined on 05-28-2004

Post #: 1
Post ID: 19308
Reply to: 19308
Updated view: The Optimal Sample Rate for Quality Audio
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http://www.lavryengineering.com/pdfs/lavry-white-paper-the_optimal_sample_rate_for_quality_audio.pdf


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
05-03-2013 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,130
Joined on 10-12-2006

Post #: 2
Post ID: 19309
Reply to: 19308
Digital Vs. Curves
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Very interesting.  I can easily understand the parts about adding distortion, however, I wonder about the "continuation of the curve" between sampling "points".  When it is explained to me, I "see" saw teeth rather than curves when the "time line" runs through the sampling points...

Paul S
05-04-2013 Post does not mapped to Knowledge Tree
rowuk


Germany
Posts 222
Joined on 07-05-2012

Post #: 3
Post ID: 19311
Reply to: 19308
“That's one small step for man… one… giant leap for mankind."
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I guess this is not really new. A well designed BMW V8 engine runs as smoothly and quietly as a V8, V10 or V12. Professional bike riders have a pace that gives them the optimum endurance and speed. Professional eaters pace their bites to get the "most" out of ingestion.

Anytime that we convert energy, there is a point of diminishing returns.

The only point where I would disagree with Mr. Lavry is about limiting bandwidth at the beginning. Every one of us has done something in their lives where we wished later that we had invested a "bit" more at the beginning. Musical events are generally unique. Capturing them should involve as much "foresight" as possible. On the other hand, maybe the secret of vintage high quality recordings was the limited bandwidth available through the entire process. Maybe, just maybe 20KHz is evil - even although it is audible........?

In any case, it probably still makes sense to design audio devices that exceed the frequency, dynamic and speed range absolutely necessary. The only question then is where does the bandwidth limiting belong? What shape should this limiting have? Romy likes FM - there we have a brick wall filter at 19KHz for the pilot tone. Tape recorders have a brick wall filter determined by the head gap size. Many professional mixing boards use transformers that also limit bandwidth. I do not know.


Whenever I feel blue, I start breathing again.
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