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What's the point of higher sampling rates in audio?, Such as 96 and 192kHz.
stranhoROX
post Oct 16 2011, 18:03
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Could someone explain to me why there are some recordings with sample rates as high as 192kHz? If most of us hear up to 20kHz, wouldn't 44.1kHz or even 48kHz be enough? Or is there other practical aspects besides boosting maximum frequency in higher sampling rates I am not aware of?
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pappaapa
post Nov 8 2011, 15:38
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Question:

Shouldn't the rest of the worlds acoustics be considered as well?
I mean, non audible frequencies pass through materials and become audible. So they need to be there if you want a natural sound reproduction.
It's not just our eardrums in the room, is it?

To make a comparison with light:
Your day at the office would be pretty dark if you were to take the non visible part of the spectra out of the equation.
As the flourecent lights fully depends on ultraviolet light, a higher frequency light just outside the visible spectra.

NOTE: I'm a musician and an audiophile, not a scientist. So I could be horribly wrong.
And maybe this has been said a million times before.
But to me it feels pretty obvious.

You should start to slow the soundwaves down right at the speaker covers.

/Levi
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2Bdecided
post Nov 8 2011, 18:00
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QUOTE (pappaapa @ Nov 8 2011, 15:38) *
To make a comparison with light:
Your day at the office would be pretty dark if you were to take the non visible part of the spectra out of the equation.
It wouldn't make any visible difference, because they're non visible.

QUOTE
As the flourecent lights fully depends on ultraviolet light, a higher frequency light just outside the visible spectra.
But speakers don't depend on ultrasonic sound to create audible sound (well, there's a device that does, but it's not a normal speaker).

Any hypothetical intermodulation of ultrasonics from the original instruments, mixing in air to create audible components, will be strongest near the instruments themselves - and will be captured, in the audible range, by the microphones at the original event. So you don't need to create them in the listening room - they're already in the recording if they exist.

Far more real (i.e. measurable and sometimes audible) is unwanted intermodulation in the speakers themselves. That never exited in the original performance, and can be measurably reduced by removing all ultrasonics cleanly.

Cheers,
David.

This post has been edited by 2Bdecided: Nov 8 2011, 18:02
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pappaapa
post Nov 9 2011, 00:10
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QUOTE (2Bdecided @ Nov 8 2011, 18:00) *
Any hypothetical intermodulation of ultrasonics from the original instruments, mixing in air to create audible components, will be strongest near the instruments themselves - and will be captured, in the audible range, by the microphones at the original event. So you don't need to create them in the listening room - they're already in the recording if they exist.


@ David & Soap
Sorry guys I didn't fully understand this explanation when I first read it. Learning as I go along.
Very true, this!

But still, it leaves out all the sounds that hasn't been recorded through a mic. Synths, or a lined bass.
And more important (i'm guessing) it leaves out all the sounds together, in a mix.

One more try with the sleep thing.
Levi
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Posts in this topic
- stranhoROX   What's the point of higher sampling rates in audio?   Oct 16 2011, 18:03
- - C.R.Helmrich   Good question! My answer: People record with 9...   Oct 16 2011, 18:18
|- - punkrockdude   QUOTE (C.R.Helmrich @ Oct 16 2011, 19:18)...   Oct 18 2011, 21:13
- - Brand   Yeah, this has been discussed a lot on HA. But in...   Oct 16 2011, 18:29
|- - saratoga   QUOTE (Brand @ Oct 16 2011, 13:29) Howeve...   Oct 16 2011, 21:32
- - benski   There are some advantages to recording, mixing and...   Oct 16 2011, 20:38
- - Canar   Trivial case where higher-sampling rates can becom...   Oct 16 2011, 21:50
|- - Notat   +1 to saratoga Canar's scenario is applicable...   Oct 16 2011, 22:48
|- - krabapple   QUOTE (Notat @ Oct 16 2011, 17:48) There ...   Oct 17 2011, 03:57
- - Juha   Still there are plenty of audiointerfaces which wo...   Oct 17 2011, 04:14
- - 2Bdecided   @benski, ...but if you're simply relying on t...   Oct 17 2011, 10:07
|- - benski   QUOTE (2Bdecided @ Oct 17 2011, 05:07) @b...   Oct 17 2011, 11:47
|- - Northpack   QUOTE (benski @ Oct 17 2011, 10:47) And i...   Oct 17 2011, 16:34
||- - 2Bdecided   QUOTE (Northpack @ Oct 17 2011, 16:34) QU...   Oct 18 2011, 11:26
||- - Dirk95100   QUOTE (2Bdecided @ Oct 18 2011, 12:26) An...   Oct 18 2011, 12:33
|||- - 2Bdecided   QUOTE (Dirk95100 @ Oct 18 2011, 12:33) QU...   Oct 18 2011, 14:46
|||- - Dirk95100   QUOTE (2Bdecided @ Oct 18 2011, 15:46) QU...   Oct 19 2011, 05:35
||||- - saratoga   QUOTE (Dirk95100 @ Oct 19 2011, 00:35) ht...   Oct 19 2011, 05:51
|||||- - Dirk95100   QUOTE (saratoga @ Oct 19 2011, 06:51) QUO...   Oct 19 2011, 08:42
|||||- - SebastianG   QUOTE (Dirk95100 @ Oct 19 2011, 09:42) An...   Oct 19 2011, 09:38
||||- - 2Bdecided   QUOTE (Dirk95100 @ Oct 19 2011, 05:35) ht...   Oct 19 2011, 11:01
||||- - Dirk95100   QUOTE (2Bdecided @ Oct 19 2011, 12:01) QU...   Oct 19 2011, 12:50
||||- - SebastianG   QUOTE (Dirk95100 @ Oct 19 2011, 13:50) Wh...   Oct 19 2011, 13:52
||||- - pdq   QUOTE (Dirk95100 @ Oct 19 2011, 07:50) Wh...   Oct 19 2011, 14:00
|||- - Woodinville   QUOTE (2Bdecided @ Oct 18 2011, 06:46) 1)...   Oct 19 2011, 07:45
||- - krabapple   QUOTE (2Bdecided @ Oct 18 2011, 06:26) Th...   Oct 18 2011, 23:10
||- - 2Bdecided   QUOTE (krabapple @ Oct 18 2011, 23:10) QU...   Oct 19 2011, 10:50
|- - dhromed   QUOTE (benski @ Oct 17 2011, 12:47) And i...   Oct 17 2011, 17:05
|- - knutinh   QUOTE (benski @ Oct 17 2011, 12:47) I...   Oct 17 2011, 18:34
|- - Dirk95100   QUOTE (knutinh @ Oct 17 2011, 19:34) QUOT...   Oct 18 2011, 05:06
- - Wombat   QUOTE (dhromed @ Oct 17 2011, 18:05) QUOT...   Oct 17 2011, 18:45
- - HTS   Do microphones have to be good enough to take adva...   Oct 18 2011, 03:45
|- - saratoga   QUOTE (HTS @ Oct 17 2011, 22:45) Otherwis...   Oct 18 2011, 03:47
- - FreaqyFrequency   There are, in fact, at least two omni capsules out...   Oct 18 2011, 04:12
- - hellokeith   Seems like a worthwhile experiment would be to run...   Oct 18 2011, 07:14
- - unekdoud   QUOTE (stranhoROX @ Oct 17 2011, 01:03) C...   Oct 18 2011, 08:01
- - Cavaille   Guys, you all disappoint me. The point of higher s...   Oct 18 2011, 13:34
|- - 2Bdecided   QUOTE (Cavaille @ Oct 18 2011, 13:34) Guy...   Oct 18 2011, 14:55
|- - saratoga   QUOTE (Cavaille @ Oct 18 2011, 08:34) Guy...   Oct 18 2011, 17:41
|- - C.R.Helmrich   QUOTE (Cavaille @ Oct 18 2011, 14:34) It ...   Oct 18 2011, 22:42
||- - hellokeith   QUOTE (C.R.Helmrich @ Oct 18 2011, 16:42)...   Oct 19 2011, 05:30
||- - C.R.Helmrich   QUOTE (hellokeith @ Oct 19 2011, 06:30) Q...   Oct 19 2011, 15:50
|- - krabapple   QUOTE (Cavaille @ Oct 18 2011, 08:34) Guy...   Oct 18 2011, 23:26
|- - Slipstreem   QUOTE (Cavaille @ Oct 18 2011, 12:34) Thi...   Nov 8 2011, 02:01
- - Wombat   I love the steps forward high resolution movies co...   Oct 18 2011, 19:48
- - [JAZ]   And are you 100% sure that the plugin is samplerat...   Oct 18 2011, 22:09
|- - punkrockdude   QUOTE ([JAZ] @ Oct 18 2011, 23:09...   Nov 1 2011, 16:55
|- - Arnold B. Krueger   QUOTE ([JAZ] @ Oct 18 2011, 17:09...   Nov 1 2011, 21:44
|- - 2Bdecided   QUOTE (Arnold B. Krueger @ Nov 1 2011, 21...   Nov 2 2011, 12:32
||- - benski   QUOTE (2Bdecided @ Nov 2 2011, 07:32) A s...   Nov 2 2011, 15:40
|- - HTS   QUOTE (Arnold B. Krueger @ Nov 1 2011, 15...   Mar 20 2012, 03:35
|- - Woodinville   QUOTE (HTS @ Mar 19 2012, 19:35) Aren...   Apr 7 2012, 05:41
|- - knutinh   QUOTE (Woodinville @ Apr 7 2012, 06:41) H...   Apr 9 2012, 12:20
- - Juha   I bet most of these 16/44.1 fanatics rips/ripped t...   Oct 19 2011, 04:33
|- - krabapple   QUOTE (Juha @ Oct 18 2011, 23:33) I bet m...   Nov 15 2011, 17:29
|- - mjb2006   QUOTE (krabapple @ Nov 15 2011, 10:29) [2...   Nov 15 2011, 22:12
|- - krabapple   QUOTE (mjb2006 @ Nov 15 2011, 17:12) QUOT...   Nov 15 2011, 22:45
- - greynol   It has little to do with editing. People record a...   Oct 19 2011, 16:34
|- - Arnold B. Krueger   QUOTE (greynol @ Oct 19 2011, 11:34) It h...   Nov 1 2011, 15:08
- - greynol   That's great, Arny, though I don't know th...   Nov 1 2011, 16:48
|- - Arnold B. Krueger   QUOTE (greynol @ Nov 1 2011, 11:48) That...   Nov 1 2011, 21:27
|- - greynol   QUOTE (Arnold B. Krueger @ Nov 1 2011, 13...   Nov 1 2011, 22:16
- - 2Bdecided   Yes, I agree. Sorry, that's what I was implyin...   Nov 2 2011, 16:18
- - astroidmist   I don't know if this has been posted or addres...   Nov 7 2011, 07:00
- - Roseval   Nyquist in reverse One should sample at the doubl...   Nov 8 2011, 00:01
- - Wombat   QUOTE (Roseval @ Nov 8 2011, 01:01) One s...   Nov 8 2011, 02:14
- - pappaapa   Question: Shouldn't the rest of the worlds ac...   Nov 8 2011, 15:38
|- - 2Bdecided   QUOTE (pappaapa @ Nov 8 2011, 15:38) To m...   Nov 8 2011, 18:00
||- - pappaapa   QUOTE (2Bdecided @ Nov 8 2011, 18:00) Any...   Nov 9 2011, 00:10
||- - Soap   QUOTE (pappaapa @ Nov 8 2011, 19:10) But ...   Nov 9 2011, 00:48
||- - 2Bdecided   QUOTE (pappaapa @ Nov 9 2011, 00:10) But ...   Nov 16 2011, 13:38
|- - krabapple   QUOTE (pappaapa @ Nov 8 2011, 10:38) Ques...   Nov 8 2011, 18:04
- - Wombat   QUOTE (pappaapa @ Nov 8 2011, 16:38) Ques...   Nov 8 2011, 15:55
- - Wombat   QUOTE (2Bdecided @ Nov 8 2011, 19:00) Far...   Nov 8 2011, 19:31
- - pappaapa   First: Thanks for your replies! And just to t...   Nov 8 2011, 21:20
|- - drewfx   QUOTE (pappaapa @ Nov 8 2011, 15:20) Firs...   Nov 8 2011, 22:42
||- - pappaapa   QUOTE (drewfx @ Nov 8 2011, 22:42) My und...   Nov 8 2011, 23:50
||- - drewfx   QUOTE (pappaapa @ Nov 8 2011, 17:50) QUOT...   Nov 9 2011, 03:58
|- - Soap   QUOTE (pappaapa @ Nov 8 2011, 16:20) So u...   Nov 8 2011, 23:24
- - Roseval   Having digitized some vinyl I know for sure I won’...   Nov 15 2011, 22:49


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