HighDefinition Compatible Digital (HDCD) is a proprietary audio encode-decode process that claims to provide increased dynamic range over that of standard Compact Disc Digital Audio, while retaining backward compatibility with existing compact disc players.
Originally developed by Pacific Microsonics, the first HDCD-enabled CD was released in 1995.[1] In 2000, the technology was purchased by Microsoft, and the following year, there were over 5,000 HDCD titles available.[2] Microsoft's HDCD official website was discontinued in 2005; by 2008, the number of available titles had declined to around 4,000.[1]
The claim that the encoding process is compatible with ordinary CD players (without audible distortion) is disputed: not being able to decode the peak soft limiting, a normal CD player will output distorted peaks.[6]
HDCD technology was developed between 1986 and 1991 by "Prof." Keith O. Johnson and Michael "Pflash" Pflaumer of Pacific Microsonics Inc. It was made publicly available as HDCD-enabled audio CDs (often identifiable by the HDCD logo printed on the back cover) in 1995.
Between 1996 and 1999 Pacific Microsonics VP of OEM Sales, Steve Fields, made over 20 trips to Japan, visiting Sanyo, Burr-Brown Japan and major audio companies, with the intent of licensing the HDCD technology. In 1998, Burr-Brown (now part of Texas Instruments) and Sanyo Electronics of Japan introduced low-cost digital-to-analog converters with HDCD decoding included, allowing HDCD to be used in CD and DVD players in the $100 range. HDCD algorithms were included in DVD chips from many IC makers including Motorola and C-Cube, allowing HDCD to be offered by mass-market DVD player makers such as Panasonic and Toshiba.
A number of manufacturers offer players with HDCD capability. Some Panasonic DVD players and the Oppo line of players all feature HDCD decoding.[9][10] Several Yamaha Blu-ray players[11][12] as well as Emotiva CD players[13] decode HDCD.
With some HDCD discs and some DVD players using WMP, the first track may not be recognized as HDCD, but all subsequent tracks are. This is because HDCD has a control signal, and if the signal is not detected by WMP at the beginning of the song, the HDCD decoder is not activated.
In 2007, a member of the Doom9 forum authored a Windows CLI utility, hdcd.exe,[16][unreliable source?] to extract and decode the HDCD data in 16-bit WAV files ripped from HDCD discs. This utility writes 24-bit WAV output files with four bits of padding per sample. The author of the utility decided not to make the source code publicly available as the HDCD technology is patented.[17]
I'm a collector of audio CD's and I listen to music from my CD's because I like it (clarified the point to avoid going off topics in terms of formats and styles) I want to ask you if linux can decode HDCD audio which is 24 bis unlike CDs standard that are recorded in 16 bits. ? I mean if linux has the ability to interpret those bits of difference, and play them from the CD making them audible?
I have investigated but I have come across very advanced explanations about compilation and things that are really out of my understanding... here is one of the links where it says that it is possible to listen to HDCD in linux.
This is one of my recent skunkworks projects. The goals were to play HDCD decoded content my regular DAC, reduce the input jitter of noisy sources, up sample the input signal, deemphasis flag detection, and use the unit for bit perfect checks. FYI...
Well our computers are perfectly capable of 24bit output, but is it possible to play HDCDs through computers? I have a few in my collection, and when A/Bed with HDCD on and off they sound fantastic through shanling players. Anyone knowere if this is...
I must be honest. I did try to install windows media player through wine but wasn't able, there is a version compatibility issue. Now I got ffmpeg ready , got VLC and also a cd player called "goobox".. what is the next step for me?. .. self anwers. find out if this players are compatible...
I don't know if my ears will notice the difference..I just want an active logo
saying "HDCD",,, maybe I should paint one and place it near the speakers
You can install foobar2000 from the Software repo and then add the plug-ins for HDCD, SACD, DVD-A etc and this will give you full playback including multi-channel if you have the right speaker setup. Not all HDCD discs are encoded the same way but peak extension is the key factor. Playback is not 24/44.1 but 20/44.1 (actually 17/44.1 but let's not split hairs). To get a fully detailed display in the taskbar, add the following to preferences/default user interface/Status bar:
I just searched foobar2000 in the Software Store and it returned Zero Results.
I remove Flatpak and Snapd both; so the first logical conclusion I can reach is that Foobar2000 must be restricted to only Snap or Flatpak packages.
It is in the Pro Software Store and is via snapcraft but I take it you're still sticking with Lite? If so, foobar2000 can be installed manually through Wine. Of course, full multichannel sound can also be obtained via headphones if a set of speakers is not available.
Hello everybody!! thank you so much for your replies.
I am not found of installing Flatpak or Snapd, specialy because one of thouse (don't remember well which one) takes a lot of space with its "infrastracture". I am on Lite , shall I tried Footbar2000 through Wine?
Yes, install foobar through Wine. That way you retain some control over it although this is one instance where Snap is not potentially malicious. The Snap version is new anyhow and it was only possible to use foobar2000 via Wine until very recently.
hi there!! how are you tambler?. Today I am working over this topic I have successfuly installed foobar2000 with wine, though it looks like and old program with small letters it seems to run. I wonder , how do I install the pluggins for HDCD? Is it incorporated or do I have to install from here ? foobar2000: Components Repository I set show all found this foobar2000: Components Repository - HDCD decoder (though I am not sure if this is only for files not for actual physical CD's)
Anyway File - Open Audio CD says No CD drives found. I know this must be because of the Windows Units (C: D: E:) thing. So I am trying to locate where my CD drive is mounted, but I cannot succed . Acording to this my CD drive is cdda://sr0/ and also /dev/sr0 ( i think is mounted here but i am not sure) I cannot see it the file manager under /media/"username"
This is the normal Linux name for a CD player. You can select CD, file or folder depending on where your music is located. I see also that your file in the snapshot is listed as HDCD but has no extra data. This is unfortunately true of many discs which were nevertheless produced by Pacific Microsonics and there are even proper HDCD discs which have no mention of that fact on either the CD or the cover. Neil Young has released almost all of his recent material on HDCD and the same goes for the Grateful Dead so it remains a niche for audiophiles.
(I do it this way because I am not having good results when playing the CD with foobar, and I have not yet overcome what we have been talking about the route to the reader, I also want to do it this way so as not to use CDs so much and have a backup ) .
.So I compared one of the files created with "DBPoweramp" and the same file created with "goobox" , by placing them into Foobar. Noted this: the first file (made with dbpoweramp) says it is 24 bits and had other lines without much info , the other file (goobox) says it is 24 bits with no extra info , I don't feel the difference in my ears anyway.
Something else I would like to add is this: when I play the CDs through the windows media player in windows in the virtual machine, I hear the difference in the sound, it is noticeable as an amplification (it is not only more volume but as something cleaner and clearer) , in contrast to when I play with goobox.
At this point, I'm still wondering if even though linux (goobox) doesn't decode HDCD (proprietary to the company you name), when I rip Flac with the same program, the characteristics are preserved. I attache pics for you to see what I mean.
Excuse me for filling you with questions, there are many doubts related to the same topic, and I can't find a better way to consult them. I also know that the topic out there is opening up to other issues related that are not part of its title, but this Zorin community is always cool and they never get angry -this is what I love from here, you are never pointing fingers.
ripped dbpoweramp738197 24.6 KB
goobox750191 26.8 KB
please do not take into account de differences in album dates..that is an error / mistake from the data base Which of this two kept the HDCD properties?
How did HDCD eclipse the 16-bit barrier of the Redbook spec? Well, they encoded some special codes in the LSB (Least Significant Bits) that when read by a custom decoding chip would translate to potentially better fidelity. They messed around with dithering, Peak Extend, which is a reversible soft limiter and Low Level Range Extend, which is a reversible gain on low-level signals. These techniques do actually accomplish what they set out to do but the discs had to be processed or encoded with HDCD AND the CD players had to be able to decode the process. While the discs did remain compatible with standard non-HDCD players, there was some compromise to the noise levels.
Pacific Microsonics introduced HDCD (which were identified with their logo) in 1995 and as many as 5000 titles were processed with it. In 2000, Microsoft purchased the assets of the company and included the patented technology in their Windows Media software players. The format still exists but only as a legacy decoder in hybrid machines like the Oppo line of players.
Real HD-Audio is a reader-sponsored online magazine dedicated to honest and accurate information about the world of high-end audio. It is written by musician, educator, audio engineer, music producer, and author Mark Waldrep, Ph.D.
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