Old 7th July 2013, 23:02   #1
Sandman192
Junior Member
 
Join Date: Jul 2013
Posts: 2
Can Winamp burn in 24 bit audio?

I have seen CDs with 24 bit audio which also called HDCD. Will it burn 24 bit? And if not can somebody create a plugin or will you Winamp make it on the next update? I want to burn FLAC files into 24 bit audio files.

Last edited by Sandman192; 7th July 2013 at 23:04. Reason: misspell
Sandman192 is offline   Reply With Quote
Old 7th July 2013, 23:17   #2
DrO
 
Join Date: Sep 2003
Posts: 27,880
with HDCD being a proprietary specification would probably require some sort of licensing (i.e. someone's got to pay something) for the means to be able to create the HDCD output.

also you'd not be doing a straight FLAC 24-bit -> HDCD as it works out as a 20-bit data stream and not a direct 24-bit one (as i think you're assuming is the case). so you'd still be loosing data as part of the conversion process.

i don't know what the case would be for decoding support, though i suspect that might need to be licensed as well (for Winamp to not be stung with lawsuits, etc). though with HDCD and variants off being quite rare, i doubt there's going to be any attempt to implement such support (even with free time, it's not something i'd be personally inclined to look into doing).

there's nothing stopping someone making a replacement CD plug-in which could at least read HDCD audio correctly, but burning is better done with a more dedicated tool or if the FLAC can be just played back as-is, then that would be the better option.
DrO is offline   Reply With Quote
Old 8th July 2013, 07:41   #3
kzuse
Senior Member
 
kzuse's Avatar
 
Join Date: Oct 2005
Location: (D)
Posts: 475
Send a message via ICQ to kzuse Send a message via Skype™ to kzuse
HDCD is not really "20-bit audio in 16 bit CD-DA", it rather is some strange filtering / compression / variable gain / soft-clipping thing wich "simulates a SNR of about 20 bit".

It's crap and placebo.

There is a tool out there (hdcd.exe, google for it) which can input 16-bit CD-DA WAV files which have HDCD encoded in their LSB and outputs a 24-bit WAV file (padded to 20 bit).

I tried this some years ago with some HDCDs I own and in almost every case this resulted in odd gain changes in the beginning of the songs, sudden "compression" effects on loud passages etc.

I cannot exclude that the tool has a bug. But actually a wealthy "common sense" tells you that it is mathematically impossible to "encode" 24-bit or even just 20-bit SNR in a 16-bit stream without applying some sort of
a) non-linearity (comparable to A-law or u-law audio used in telephony, that uses an 8-bit non-linear quantization)
b) noise filtering (to simulate a better SNR)
c) adaptive compression or amplification. (as used e.g. in the NICAM audio standard seen in UK's analog TV broadcasting)

So, just forget it.
Better burn your 24 bit FLAC files to DVD-VIDEO or DVD-AUDIO. Both support it natively, as long your player does.

Best regards,
kzuse
kzuse is offline   Reply With Quote
Reply
Go Back   Winamp & SHOUTcast Forums > Winamp > Winamp Technical Support

Tags
24 bit audio hdcd

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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