|Media type||Optical disc|
|Capacity||Typically up to 700 MB|
|Readmechanism||780 nm wavelength semiconductor laser|
|Developedby||Pacific Microsonics Inc./Microsoft|
All About The CD, HDCD, and SACD Audio Disc Formats Get the facts about Audio CDs and related disc formats.
High Definition Compatible Digital (HDCD) is a proprietary audio encode-decode process that claims to provide increased dynamic range over that of standard Red Bookaudio CDs, while retaining backward compatibility with existing compact disc players.
Originally developed by Pacific Microsonics, the first HDCD-enabled CD was released in 1995. In 2000, the technology was purchased by Microsoft, and the following year, there were over 5,000 HDCD titles available. Microsoft's HDCD official website was discontinued in 2005; by 2008, the number of available titles had declined to around 4,000.
A number of CD and DVD players include HDCD decoding, and versions 9 and above of Microsoft's Windows Media Player on personal computers are capable of decoding HDCD.
- 4Software players
HDCD encodes the equivalent of 20 bits worth of data in a 16-bit digital audio signal by using custom dithering, audio filters, and some reversible amplitude and gain encoding: Peak Extend, which is a reversible soft limiter; and Low Level Range Extend, which is a reversible gain on low-level signals. There is thus a benefit at the expense of a very minor increase in noise.
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.
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 D-to-A 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-Cubed, allowing HDCD to be offered by mass-market DVD player makers such as Panasonic and Toshiba.
In 2000, Pacific Microsonics folded and Microsoft acquired the company and all of its intellectual property. Microsoft discontinued the official HDCD website in 2005.
In January 2007, there were roughly the same number of titles available on SACD as on HDCD-encoded CDs.
A number of manufacturers offer players with HDCD capability. Some Panasonic DVD players and the Oppo line of players all feature HDCD decoding. Several Yamaha Blu-ray players as well as Emotiva CD players  decode HDCD.
Windows Media Player
Windows Media Player 12 For Xp
Since version 9 of Microsoft's Windows Media Player (WMP) HDCD enabled CDs can be played on personal computers fitted with a 24-bit sound card.
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, 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.
Illustrate's dBpoweramp Music Converter, a Windows GUI program, has an HDCD DSP effect that acts as a front-end to the utility listed above.
A plugin is available for foobar2000 that will decode HDCD data in any 16-bit PCM passed through it, resulting in a 20-bit PCM stream.
FFmpeg's libavfilter includes an HDCD filter as of FFmpeg 3.1 (June 2016) that will convert 16-bit PCM with HDCD data to 20-bit PCM.
An open-source HDCD decoder library exists as libhdcd.
- K2 High Definition
- ^ ab'Home Technology eMagazine - Classic Home Toys Installment #19 The Final CD Format: HDCD'. HomeToys. 30 November 2008. Retrieved 5 August 2012.
- ^'HDCD (High Definition Compatible Digital) from Pacific Microsonics'. TimeForDVD.com. 23 February 2002. Retrieved 5 August 2012.
- ^Johnson, Keith O.; Pflaumer, Michael W. (November 1996). 'Compatible Resolution Enhancement in Digital Audio Systems'. Audio Engineering Society. Retrieved 2012-08-22.
- ^'The HDCD Enigma'. Audiomisc.co.uk. Retrieved 2012-08-05.
- ^US 5479168
- ^US 5872531
- ^'Universal Network 3D Blu-ray Players - Buy Direct from the Manufacturer'. OPPO Digital. Retrieved 2012-08-05.
- ^'Unofficial OPPO UDP-203 Frequently Asked Questions'. AVSForum. Retrieved 2017-03-03.
- ^'Yamaha BD-A1060 Universal Blu-Ray Player Review'. Secrets of Home Theater and High Fidelity. 2016-11-14. Retrieved 2017-03-04.
- ^'2 new Yamaha uni players - including one with balanced analog outputs'. Steve Hoffman Music Forums. 2016-07-16. Retrieved 2017-03-04.
- ^'Emotiva ERC-3 Differential Reference CD Player/Digital Transport Review'. Secrets of Home Theater and High Fidelity. 2014-09-02. Retrieved 2017-03-04.
- ^'Features of Windows Media Player 9 Series'. Microsoft.com. Retrieved 2012-08-05.
- ^'Smart Jukebox Features'. Microsoft.com. Retrieved 2012-08-05.
- ^utility[unreliable source?]
- ^'HDCD Software Decoder - Doom9's Forum'. Forum.doom9.org. Retrieved 2012-08-05.
- ^dBPoweramp's DSP Effects page ; dBpoweramp's local help file
- ^'foobar2000 HDCD decoder component'. Foobar2000.org. 2012-07-18. Retrieved 2012-08-05.
- ^'June 27th, 2016, FFmpeg 3.1 'Laplace''. FFmpeg.org. Retrieved 2 July 2016.
- ^'libhdcd - An HDCD decoder library'. Retrieved 21 August 2016.
-  last Internet Archive capture of Microsoft's now discontinued HDCD official website
-  last Internet Archive capture of Microsoft's now discontinued HDCD official FAQ
- website with many details about HDCD: 'HDCD - An Overview'. Goodwin's High End. Archived from the original on 2015-04-02. Retrieved 20 May 2015.
- List of HDCD-encoded compact discs (with technical details) at HydrogenAudio wiki
- List of known HDCD compact discs (names only) at Head-Fi.org
- High Definition Compatible Digital at HydrogenAudio wiki
If Windows Media Player 12 misbehaves and a simple restart — or resetting it to its default configuration — doesn't help, uninstall and reinstall the program from your computer. This procedure should resolve the Windows Media Player errors if they relate to the integrity of core program files.
Windows Media Player 12 Codec
However, unlike other programs you can reinstall, you don't actually need to delete Windows Media Player, nor do you download it from a website when you want to install it. Instead, just disable Windows Media Player within the Windows Features utility to remove it, or enable it to add it back to your computer.
The procedure we outline works for all currently supported versions of Windows Media Player and Microsoft Windows. Windows Media Player 11 worked with Windows Vista; neither of which remains actively supported by Microsoft.
How to Disable Windows Media Player
Windows Media Player 12 is included in Windows 10, Windows 8.1, and Windows 7. The process for disabling WMP is identical in each of these versions of Windows.
Open the Run dialog box with the Win+R shortcut.
Enter the optionalfeaturescommand.
Locate and expand the Media Features folder in the Windows Features window.
Remove the checkbox next to Windows Media Player.
Click the Yes button to the question prompt about how turning off Windows Media Player might affect other Windows features and programs. Turning off WMP will also disable Windows Media Center (if you have it installed, too).
Click OK on the Windows Features window and wait while Windows disables Windows Media Player 12. How long it takes depends primarily on the speed of your computer.
Restart your computer. You're not asked to reboot in Windows 10 or Windows 8 but it's still a good habit to get into when disabling Windows features or uninstalling programs.
Enabling Windows Media Player
Windows Media Player 12 Reinstall
To install Windows Media Player again, repeat the above steps but put a check in the box next to Windows Media Player in the Windows Features window. If disabling WMP disabled something else, like Windows Media Center, you can re-enable that, too. Remember to restart your computer when you're done installing Windows Media Player.
Most Windows 10 computers come with Windows Media Player installed by default, but if your particular build did not, you can download Microsoft's Media Feature Pack to enable it.
We've prepared a list of common WMP problems with tips about how to fix them, as well as lists of WMP plug-ins to extend its functionality or alternative media-player programs if you're no longer thrilled with WMP.