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In Reply to: RE: 192/24 Stereo: Maybe a possible future for High Resolution Audio... posted by HugoRosa on June 28, 2008 at 05:15:48
Hey Hugo,
On the PC audio forum, there is a big debate about upsampling with one camp preferring 16/44 content upsampled realtime to 24/96 or 24/192 (or 24/88 or 24/176). Another group is against this and says upsampling only screws things up. A small group has proposed non realtime upsampling where the file is changed - sounds like this is what you did.
However, I think all agree that if the original is in say 24/192 then that is how it should be listened to.
I for one think any good audiophile PC system should be capable of 24/192 resolutions or higher because I am optimistic that sites like 2l will have more and more content and maybe even stuff I might like.
Anyhow, glad you are enjoying yourself!
Follow Ups:
In my experience with live recordings it is not the sampling frequency that makes that much difference in the sound quality, it is the bit depth. 24/48 will provide a real audible difference in sound quality, 24/96 a perhaps very slight difference. I have never any live 24/192 recordings but I would expect the differences to be inaudible between 24/96 and 24/192.
these recordings I can burn very easily to DVD using Audio DVD creator and play them back on any recent DVD player.
I have to disagree though about it being the future. It really is/was now the past for hi resolution audio. Could have easily been done 5-7 years ago, no format war etc. These companies will get what they deserve in terms of downloads replacing their business.
BTW, lots of hi res audio recordings out there, easy to find.
I would agree with you that bit depth is extremely important with live recording. For one thing, if you want to be sure to avoid clipping you will have to set the levels low, which will mean throwing away at least one bit and possibly two. If you have bits to spare and musicians who do not play at predictable levels or keep a constant distance from the microphones, then this is very important as clipping distortion is the pits. Once a recording has been finalized, you can reclaim the missing bits by normalizing the levels, so using 16 bits at this stage won't be so bad.
The higher sample rates are nice, too, particularly with some music. But if I had to choose I would definitely give up sample rate before giving up the extra bits. There are people who claim that even 192 is not (quite) enough for best transient response and recommend DXD (352.8 kHz at 24 bits).
Tony Lauck
"Perception, inference and authority are the valid sources of knowledge" - P.R. Sarkar
Well, many agree with you and recomend recording in this format, but...
How can i (as a customer!) play this type of audio file contents?
Is there any hardware that would accept it?
Is there any PC or Laptop models ready to play this?
How can i play this files natively, without spending what i have, and what i don't have :)
Best regards,
Hugo Rosa.
Best regards.
The AX24 will play native DXD. I don't have any experience with this or any other equipment of this bandwidth, it is out of my budget. I believe the documentation on the Digital Audio Denmark web site discusses interfacing issues. You will definitely need a fast computer to tolerate the big files and high data rates this format supports.
The AX24 is a multichannel ADC and DAC. Perhaps there are less expensive 2 channel DACs that support DXD, but I haven't investigated it. There are many relatively inexpensive sound cards that run at 192/24, for example the Lynx L22 which enjoys a good reputation on the forum.
Over time, according to Moore's Law, perhaps the cost of this level of equipment will come down, but only if there is market demand.
Tony Lauck
"Perception, inference and authority are the valid sources of knowledge" - P.R. Sarkar
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