Overunity.com Archives is Temporarily on Read Mode Only!



Free Energy will change the World - Free Energy will stop Climate Change - Free Energy will give us hope
and we will not surrender until free energy will be enabled all over the world, to power planes, cars, ships and trains.
Free energy will help the poor to become independent of needing expensive fuels.
So all in all Free energy will bring far more peace to the world than any other invention has already brought to the world.
Those beautiful words were written by Stefan Hartmann/Owner/Admin at overunity.com
Unfortunately now, Stefan Hartmann is very ill and He needs our help
Stefan wanted that I have all these massive data to get it back online
even being as ill as Stefan is, he transferred all databases and folders
that without his help, this Forum Archives would have never been published here
so, please, as the Webmaster and Creator of these Archives, I am asking that you help him
by making a donation on the Paypal Button above.
You can visit us or register at my main site at:
Overunity Machines Forum



Doing Without an Oscilloscope!

Started by jadaro2600, December 25, 2009, 03:10:33 AM

Previous topic - Next topic

0 Members and 2 Guests are viewing this topic.

ATT

Quote from: jadaro2600 on December 31, 2009, 04:54:18 PM
Say, has anyone else noticed that the most stereo / surround receivers only output a max of 20khz, yet we're led to believe that we're getting otherwise because of a sampling rate delusion?

I think in most cases, for audio, 20khz is considered the practical upper limit of  hearing.

That's pretty much been the case as long as I've been around.

Tony

crowclaw

Quote from: ATT on December 31, 2009, 05:27:38 PM
I think in most cases, for audio, 20kHz is considered the practical upper limit of  hearing.

That's pretty much been the case as long as I've been around.

Tony

Correct, our top end hearing range limits way below 20KHz as we age, but with modern digital sound systems the DAC's samples way above. The higher the sampling rate, the better sound definition and subtle detail of clarity is perceived in our music listening pleasure. Isn't modern tech wonderful.  Merv

ATT

Quote from: crowclaw on January 01, 2010, 12:04:12 PM
The higher the sampling rate, the better sound definition...

Merv,

I first ran into 'sampling' from an old PAIA kit I built back in the '70s. I think the rule of thumb was to sample at something like four times the high-end it was expected to process.

Digital is pretty cool, you can emphasize sub-harmonics of the frequencies that might be out of range to psycho-acoustically augment 'perception' of clean highs.

And of course, no more noise-reduction hassles with digital.

Still, there's something about tube-amps and vinyl...

Tony