Go Back   OC3D Forums > [OC3D] General Forums > OC3D News
Reply
 
Thread Tools Display Modes
 
  #11  
Old 19-09-19, 06:21 AM
NeverBackDown NeverBackDown is offline
AMD Enthusiast
 
Join Date: Dec 2012
Location: With the Asguardians of the Galaxy
Posts: 16,291
Quote:
Originally Posted by Dawelio View Post
It was meant to say more of ”I guess it’s to be more of a ”common” term, as most things today are called HD in a way... TV channels, picture quality etc.



When did it come about then? Since I doubt you’re older than my parents...
All good. HD is just the universal word for basically better nowadays

__________________
I am Iron Man.
Reply With Quote
  #12  
Old 19-09-19, 09:34 AM
tgrech tgrech is online now
OC3D Elite
 
Join Date: Jun 2013
Location: UK
Posts: 1,456
Hi-Fi is a term that originates from the 1940's, massively predates CDs so while some may use it refer to better than CD quality now it's definitely not a strict definition and traditionally has always meant just "Better than mainstream quality". Back then it basically meant "post war tech", Germans created very advanced tech for the concepts of recording and reproducing audio and after WWII when American companies wanted to commercialise the concepts they called all the new tech they borrowed(Combined with other developments) "High-Fidelity"(Soon shortened to HiFi for marketing materials), as opposed to the traditional AM radios and 78 rpm vinyls.
Reply With Quote
  #13  
Old 19-09-19, 03:53 PM
looz's Avatar
looz looz is offline
OC3D Elite
 
Join Date: Feb 2013
Location: Finland
Posts: 1,498
What's so confusing? High definition makes sense with audio as well, it's all marketing wankery anyway.

What matters is lossy vs. lossless, sample rate and bit depth. And they provide those values as well on the source article:
  • Amazon HD: FLAC, 16 bit, 44.1kHz
  • Amazon Ultra HD: FLAC, 24 bit, 192kHz
So basically HD itself is good enough to make your audio gear (including acoustics) and production quality the only factors for sound quality, Ultra HD is just paying extra for nicer image in spectrogram.
__________________
i7 8700k - 16GB - 2060 FE - 512GB 970 & 850 EVO - AKG K702
Reply With Quote
  #14  
Old 19-09-19, 04:52 PM
tgrech tgrech is online now
OC3D Elite
 
Join Date: Jun 2013
Location: UK
Posts: 1,456
Quote:
Originally Posted by looz View Post
What's so confusing? High definition makes sense with audio as well, it's all marketing wankery anyway.

What matters is lossy vs. lossless, sample rate and bit depth. And they provide those values as well on the source article:
  • Amazon HD: FLAC, 16 bit, 44.1kHz
  • Amazon Ultra HD: FLAC, 24 bit, 192kHz
So basically HD itself is good enough to make your audio gear (including acoustics) and production quality the only factors for sound quality, Ultra HD is just paying extra for nicer image in spectrogram.
Yeah this, for playback alone Nyquist's theorem dictates that 40kHz is adequate for the full range of human hearing, we only really need to go abit above that to account for foldback aliasing at the to end of the frequency range, so having crazy sample rates means nothing for playback quality to a human ear.

Of course bits per sample is one that's impossible to pin down but no blind testing has ever indicated a human can appreciate the difference in fidelity between having 65000+ different values per sample(16-bit) or millions(24-bit), in fact it's likely that almost all hardware is incapable of physically conveying this difference as we'd be talking differences in physical movements in the cone assembly in the speaker(Excursion) of nanometers. Even assuming a large max excursion of say 10cm in a very large speaker, the fidelity of 16-bit audio would mean one value for every 152 nanometers of movement in the cone(And realistically we can't actually mass produce things with this level of physical accuracy on any kind of scale, this is almost atom counting territory, in fact it absolutely would be on the scale of in-ear devices).
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump










All times are GMT. The time now is 12:05 PM.
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.