Has anyone experienced speakers over 23kHz
|
Joined: Jun 2010
Posts: 92
old hand
|
OP
old hand
Joined: Jun 2010
Posts: 92 |
My friend recently bought Akira on blu ray, 192/24 as we all know. We got into a big conversation of is there any truth to hyper sonics at all. Accoriding to that Nyquist theorem that means it should be capable of sending frequency signals of about 86 khz, 66khz higher than human hearing! I'm curious how many of you ever experienced super tweeters capable of that, and if you ever noticed anything in such recordings. In all honesty I think it is a gimmick, even though the idea sounds interesting. Can't find much scientific info on hyper sonics unfortunately, was wondering what you guys make of it.
M60, VP150, QS8, HSU VTF2-MK 3, Marantz SR8002, Oppo BDP-83SE, 50" Panasonic Plasma
|
|
|
Re: Has anyone experienced speakers over 23kHz
|
Joined: May 2003
Posts: 18,044
shareholder in the making
|
shareholder in the making
Joined: May 2003
Posts: 18,044 |
I think it's a bunch of horseradish, myself.
I am the Doctor, and THIS... is my SPOON!
|
|
|
Re: Has anyone experienced speakers over 23kHz
|
Joined: Jun 2010
Posts: 92
old hand
|
OP
old hand
Joined: Jun 2010
Posts: 92 |
Bantha fodder is my current stance on it as well.
M60, VP150, QS8, HSU VTF2-MK 3, Marantz SR8002, Oppo BDP-83SE, 50" Panasonic Plasma
|
|
|
Re: Has anyone experienced speakers over 23kHz
|
Joined: Feb 2009
Posts: 3,466
connoisseur
|
connoisseur
Joined: Feb 2009
Posts: 3,466 |
Higher sampling rates are not about higher frequency response, but about less aliasing though out the audible range.
Since you brought up Nyquist, yes it takes a 40 kHz carrier to reproduce a 20 kHz signal, but that signal must be precisely aligned. Think about this a 20 kHz sine carried in a 40 kHz PCM encoding, will appear the same as a triangle wave, one sample up, one sample down. If that signal shifts 90° in phase, it becomes silence. 45° cuts the amplitude in half. Only right on do you get the full energy recorded. Anti-aliasing in the down mix only serves to average the stored signal into half-amplitude also. Even a more reasonable 10 kHz signal still has pretty bad aliasing issues. But if you increase the sampling rate four fold, it's much easier to store the full energy of the signal without having to worry about exact phase alignments.
If I were recording I'd master at 384 kHz, low-pass filter at 24 kHz, and then anti-alias into a 192 kHz mix for distribution. There'd be no ultrasonic component for so-called super tweeters (nor to destabilize poorly designed Class D amps), but a very accurate representation of the original analog waveform.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
|
|
|
Re: Has anyone experienced speakers over 23kHz
|
Joined: Apr 2003
Posts: 16,441
shareholder in the making
|
shareholder in the making
Joined: Apr 2003
Posts: 16,441 |
I nominate ClubNeon for US Secretary of Audio Mastering.
|
|
|
Re: Has anyone experienced speakers over 23kHz
|
Joined: Jul 2009
Posts: 288
local
|
local
Joined: Jul 2009
Posts: 288 |
My Marantz SR6003 cannot process the 5.1 192kHz/24bit signal from the BDP-80 It will only show 2 channel at 192kHz/24, playback the 96Khz/24bit version, have no problem with the processing....
|
|
|
Re: Has anyone experienced speakers over 23kHz
|
Joined: Nov 2008
Posts: 1,789
connoisseur
|
connoisseur
Joined: Nov 2008
Posts: 1,789 |
Chris I'm not sure you make enough money where ever it is you work... I wonder how well Axiom pays their engineer team?
My Stuff :
M80's QS8's VP150 EP800 Denon 4802 Emotiva XPA-3 Samsung BD-P3600 Sharp 65 Inch Aquos LCD
|
|
|
Re: Has anyone experienced speakers over 23kHz
|
Joined: Feb 2009
Posts: 3,466
connoisseur
|
connoisseur
Joined: Feb 2009
Posts: 3,466 |
My Marantz SR6003 cannot process the 5.1 192kHz/24bit signal from the BDP-80 It will only show 2 channel at 192kHz/24, playback the 96Khz/24bit version, have no problem with the processing.... Quite a few receivers don't have enough power to both decode the a lossless 192 kHz, multi-channel, Dolby/DTS bitstream and apply processing. See if you can configure the BDP to ouput LPCM instead of bitstream. Then check to see if the Marantz is still getting 192, and if processing has been re-enabled. I still stand that BD players should only output LPCM, and do away with bitstreaming.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
|
|
|
Re: Has anyone experienced speakers over 23kHz
|
Joined: Feb 2009
Posts: 3,466
connoisseur
|
connoisseur
Joined: Feb 2009
Posts: 3,466 |
Chris I'm not sure you make enough money where ever it is you work... I wonder how well Axiom pays their engineer team? I would design things for free if someone would build them, and just give me one to play with.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
|
|
|
Re: Has anyone experienced speakers over 23kHz
|
htnut
Unregistered
|
htnut
Unregistered
|
If you're phone is ringing, it's probably someone from Axiom.
|
|
|
Forums16
Topics24,945
Posts442,487
Members15,617
|
Most Online2,082 Jan 22nd, 2020
|
|
0 members (),
562
guests, and
4
robots. |
Key:
Admin,
Global Mod,
Mod
|
|
|
|