IPB

Welcome Guest ( Log In | Register )

What's the point of higher sampling rates in audio?, Such as 96 and 192kHz.
stranhoROX
post Oct 16 2011, 18:03
Post #1





Group: Members
Posts: 23
Joined: 8-October 07
Member No.: 47696



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?
Go to the top of the page
+Quote Post
 
Start new topic
Replies
pappaapa
post Nov 8 2011, 21:20
Post #2





Group: Members
Posts: 14
Joined: 12-June 09
From: Stockholm, SWE
Member No.: 70614



First: Thanks for your replies!

And just to tell you. Personally, I'm only curious. I have no preference (but vinyl).
I've never participated in this kind of discussion before and I haven't done much more reading than the physics in school (15 years ago).

Though I did do some reading before writing this and all I can say is: This is waaay too complicated for me.

Turns out there are actually several ultrasonic speakers. Where the air it passes through slows down the soundwaves, so that it will be audible at a certain point.
You can find them at disneyworld and in your local mall. Aimed at you.

But really, I can't understand how anyone without a degree in physics can say either YES or NO to my question.
You really need to know your way around Nonlinear Acoustics.
Here's a place to start: Nonlinear Acoustics Wiki

So unless anybody can explain this in a simple (and informed) way, I'm just gonna have to leave this alone.
Really sorry for wasting your time.

/Levi
Go to the top of the page
+Quote Post
drewfx
post Nov 8 2011, 22:42
Post #3





Group: Members
Posts: 90
Joined: 17-October 09
Member No.: 74078



QUOTE (pappaapa @ Nov 8 2011, 15:20) *
First: Thanks for your replies!

And just to tell you. Personally, I'm only curious. I have no preference (but vinyl).
I've never participated in this kind of discussion before and I haven't done much more reading than the physics in school (15 years ago).

Though I did do some reading before writing this and all I can say is: This is waaay too complicated for me.

Turns out there are actually several ultrasonic speakers. Where the air it passes through slows down the soundwaves, so that it will be audible at a certain point.
You can find them at disneyworld and in your local mall. Aimed at you.

But really, I can't understand how anyone without a degree in physics can say either YES or NO to my question.
You really need to know your way around Nonlinear Acoustics.
Here's a place to start: Nonlinear Acoustics Wiki

So unless anybody can explain this in a simple (and informed) way, I'm just gonna have to leave this alone.
Really sorry for wasting your time.

/Levi


My understanding is ultrasonic speakers work similar to AM radio - you have an (inaudible) ultrasonic wave modulated by the audio you want to produce. You never hear the ultrasonic signal itself; it's just a carrier for the audible stuff.
Go to the top of the page
+Quote Post
pappaapa
post Nov 8 2011, 23:50
Post #4





Group: Members
Posts: 14
Joined: 12-June 09
From: Stockholm, SWE
Member No.: 70614



QUOTE (drewfx @ Nov 8 2011, 22:42) *
My understanding is ultrasonic speakers work similar to AM radio - you have an (inaudible) ultrasonic wave modulated by the audio you want to produce. You never hear the ultrasonic signal itself; it's just a carrier for the audible stuff.


Well that's one kind. Where you have a reciever remodulating the ultrasonic sound.

The kind I'm refering to needs no reciever. It's just air slowing the soundwaves down and at a desired distance the sound becomes audible. As I understand it they shape the ultrasonic sound so that when the air has slowed it down to certain wavelengths interferance amongst the short soundwaves produces longer wavelengths and thus a high fidelity audible sound.
The mechanism is called Parametric Array.

Here's some reading: Parametric array - Wiki
Here's an interesting link of an implementation in an art installation: Link

The question here is how often and how much does this occur at normal listening volumes in the nonaudible (but reproducable) frequencies. And to me it's just too complicated.

I tried to find some clever guy with some info on the web. But I really have to go to sleep now.

Good night from Sweden!
/Levi
Go to the top of the page
+Quote Post

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


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 22nd September 2014 - 01:16