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	High Definition Compatible Digital - Wikipedia, the free encyclopedia
		HDCD encoding places a control signal in the least significant bit of the 16-bit audio samples (in-band signaling), adding a significant 4-bit more to the musical signal.
		HDCD Precision Filtering purportly reduces alias distortion and time smears, resulting in more natural, open and accurate sound reproduction.
		HDCD technology was developed between 1986 and 1991 by Keith Johnson and Pflash Pflaumer of Pacific Microsonics Incorporated.
	en.wikipedia.org /wiki/HDCD (205 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		HDCD® (High Definition Compatible Digital®) is a patented process for delivering on Compact Disc the full richness and details of the original microphone feed.
		HDCD encoded CDs sound better because they are encoded with 20-bits of real musical information as compared to 16-bits for all other CDs.
		HDCD overcomes the limitation of the 16-bit CD format by using a sophisticated system to encode the additional four bits onto the CD while remaining completely compatible with the CD format.
	www.audiolinks.nl /hdcd.htm (406 words)

	Amadian - The Mike Oldfield Discography (hdcd)
		The High Definition Compatible Digital, or HDCD, is a patented process for delivering on CD the full richness and detail of the original microphone feed.
		HDCD overcomes the limitation of the 16-bit CD format by using a sophisticated system to encode the additional 4 bits onto the CD while remaining completely compatible with the CD format.
		All the HDCDs features a reworked artwork though some mistakes are made on it, even more all of them have a similar design then most of the original CDs artwork is lost.
	www.amadian.net /hdcd.htm (255 words)

	Euphonix Sells HDCD Processors (Site not responding. Last check: 2007-10-08)
		HDCD recordings are encoded with 20-bits of real musical information as compared to 16-bits for all other CDs.
		HDCD overcomes the limitation of the 16-bit CD format by using a sophisticated system to encode the additional four bits onto the CD.
		HDCD recordings are compatible with the CD format and provide improved sound even in conventional CD players, although best results are achieved with HDCD-compatible players.
	www.prosoundnews.com /stories/2002/january/0107/0107.3.shtml (341 words)

	HDCD - a Whatis.com definition - see also: High Definition Compatible Digital (Site not responding. Last check: 2007-10-08)
		HDCD (High Definition Compatible Digital) is a digital encoding and decoding process for compact disc and DVD audio recording.
		The HDCD process manages to encode 20 bits of audio information into a conventional CD 16-bit channel, yielding a greater dynamic range and a more true-to-life sound when decoded.
		HDCD was developed by Keith Johnson and Pflash Pflaumer between 1986 and 1991, and made publicly available in 1995.
	searchsmb.techtarget.com /sDefinition/0,,sid44_gci843768,00.html (325 words)

	Rotel manufactures home theater, hi fi and multi-room audio systems for audiophiles and videophiles including stereo ...
		The HDCD (High Definition Compatible Digital) Process is a patented encode/decode process for delivering on conventional Compact Discs the full richness and detail of high resolution master recordings.
		HDCD process technology is encoded on Compact Discs during the mastering stage by the professional Model One HDCD Processor and decoded by the PMD-100 HDCD Process Decoder inside Compact Disc players.
		In less than two years, HDCD decoding technology has become the standard in high-end audio systems and is now available from virtually every major high-end CD player manufacturer around the world.
	www.rotel.com /html/hdcd.htm (590 words)

	Hydrogenaudio Forums -> Extract HDCD
		Having read the technical infos about HDCD which are publicly available (the AES paper) I currently believe HDCD to be just a technology with quite low benefit compared to plain noise shaping.
		The peak decompression mechanism which is part of an HDCD decoder is fairly simple, but it won't increase the signal to noise ratio because most of the signal (except the peaks) will get attenuated by 6 dB.
		So, if you play a HDCD via a normal CDplayer, the 16th bits would be converted by normal DDA-converter to pure noise.
	www.hydrogenaudio.org /forums/index.php?showtopic=30999&hl=hdcd (1556 words)

	About HDCD (Site not responding. Last check: 2007-10-08)
		HDCD overcomes the limitation of the 16-bit CD format by using a sophisticated system to encode the additional 4 bits onto the CD while remaining completely compatible with the existing CD format.
		For HDCD CD releases, Peak Extend restorable soft limiting can increase resolution by allowing signal levels to be raised by up to 6 dB; Low Level Extend can improve resolution of low-level signals; and HDCD high-frequency dither improves resolution by 6 dB (one bit).
		HDCD technology was originally developed by Keith Johnson and Pflash Pflaumer, two preeminent technologists in the audio arena.
	www.hdcd.com (379 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		HDCD Makes Strong Showing In Grammy Nominations BERKELEY, Calif.--(ENTERTAINMENT WIRE)--January 20, 1998--HDCD(R)'s strong and growing presence in the recording industry was evident in the recent GRAMMY(R) nominations where 26 HDCD recordings received 42 nominations across a wide range of musical categories.
		All told, HDCD gold and platinum albums have sold over 20 million copies in the 20 months since the process became available for use by the recording industry.
		The growing list of HDCD gold and platinum albums is mirrored by a steady increase in the number of albums on the Billboard charts mastered using the HDCD process.
	www.sonymusic.com /artists/JohnMellencamp/news/old_news/HDCD1-20-98.txt (680 words)

	Euphonix - News -HDCD Model Two (Site not responding. Last check: 2007-10-08)
		HDCD recordings sound better because they are encoded with 20-bits of real musical information as compared to 16-bits for all other CDs.
		HDCD recordings are completely compatible with the CD format and provide improved sound even in conventional CD players, although best results are achieved with HDCD-compatible players.
		The Pacific Microsonics HDCD Model Two Processor is already installed in some of the top mastering studios including Bernie Grundman Mastering, Gateway Mastering, Georgetown Masters, Sony Music Mastering, Linn Recording in Scotland and Sanctuary Mastering in London.
	www.euphonix.com /news/news2002/010402_model_two.htm (442 words)

	Spectral Incorporated
		HDCD recordings are made from analog to digital conversions having more bits and faster sampling to provide a large amount of dynamic and resolution information.
		When operating with the HDCD decoder it not only achieves dynamic and high power clarity advantages of balanced multi-bit conversion but also low level ambiance and lack of grainy sound, features of one bit conversion.
		Digital filtering or interpolation provided by the HDCD decoder smoothes the audio signal as well as reduces non-harmonic supersonic sidebands to prevent high frequency interaction in other components of the audio chain.
	www.spectralaudio.com /sdr-2000.htm (2109 words)

	Arcam FMJ CD36 no HDCD - AVS Forum
		HDCD is simply a digital filter when not decoding an HDCD disc.
		The HDCD filter was quite good 6 or 7 years ago, but is not state of the art today.
		HDCD discs due sound spectacular but frankly I think there are far too few of them to mandate HDCD.
	www.avsforum.com /avs-vb/showthread.php?t=582551 (3462 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		The HD 750's HDCD capability and advanced digital circuitry raises the standard in CD player sound quality, delivering an exceptional level of sonic refinement and musicality from both HDCD-encoded and conventional CDs.
		HDCD discs offer greater dynamic range, a more realistic soundstage and exceptionally natural musical timbre.
		Along with its top-quality HDCD processing capability, the HD 750 incorporates a host of leading-edge digital technologies and advanced features for superb CD playback performance, for example the “zero flag“ acknowledgement for extra silent periods between tracks.
	www.e-hifi.com.au /products/NewProductInfo.asp?i_id=16 (555 words)

	HTGuide Forum - HDCD on RSP-1068/RDV-1050 not working?
		Since HDCD isn't a different frequency or sample rate than a regular CD, maybe since the decoder is in the DVD player as well, it pre-decodes the 'extra' stuff and just sends it out as a normal signal.
		When I play an HDCD disc on my RDV 1060, and use the digital input on my RSP 1068 in 2ch mode, "HDCD" shows up on the RSP's display indicating that it is decoding the HDCD signal.
		The chip set used in the RDV1050 is not able to detect HDCD, and therefore pass on the bit-stream to the processor.
	www.htguide.com /forum/printthread.php4?t=10850 (2132 words)

	Frequently Asked Questions about HDCD
		HDCD decoder solutions are a worldwide standard in high-fidelity audio systems, with more than 100 models of HDCD-equipped players now available.
		HDCD uses very advanced dither and, in addition, has technology that allows up to 20-bit performance when an HDCD player is used.
		When an HDCD recording is made, the mastering engineer has several HDCD encoding options that are used depending upon the type of music.
	www.wildwestelectronics.net /freqasquesab1.html (1307 words)

	Microsoft Acquires Pacific Microsonics Inc.: Developer of HDCD Digital Audio Technology to Bring Advanced Sound ... (Site not responding. Last check: 2007-10-08)
		HDCD has been used in the recording of more than 5,000 CD titles, which include more than 225 Billboard Top 200 recordings and that account for more than 300 million CDs sold.
		PMI also licenses the HDCD decoder and filter technology to most of the world's leading audio IC manufacturers.
		Microsoft, High Definition Compatible Digital and HDCD are either registered trademarks or trademarks of Microsoft Corp. in the United States and/or other countries.
	www.microsoft.com /presspass/press/2000/Sept00/PMIPR.mspx (516 words)

	HDCD and SACD (Site not responding. Last check: 2007-10-08)
		Actually they're almost certain to be more accurate reproductions of the master tape than any of the vinyl pressings, since mastering for vinyl, and vinyl playback, introduces several sorts of deviations from 'fidelity'.
		HDCD is back-compatible; you can play your HDCDs on a non-HDCD player.
		Unlike HDCD, which is really just a sort of tweak on standard digital recording -- as is '24-bit' dithered down to 16 -- SACD is a whole 'nother type of digital transfer.
	et.stok.co.uk /articles/734-14.html (550 words)

	SH Forums - Steve, what are your thoughts on HDCD? (Asked in reference to upcoming gold CDs.)
		I don't have any HDCDs that I think sound crappy, but I would like to be able to turn off the decoding to see if I could hear a difference.
		I have no HDCD decoding capabilities, nor was I savy enough to pick up the differences between tracks without the decoding.
		What I do know first hand is that so many modern country CDs are mastered in HDCD and that I don't have a compatible player although at my local pawn shops, I see a 5 disc Apex DVD changer that has HDCD decoding capabilities all the time and they don't sell.
	www.stevehoffman.tv /forums/showthread.php?t=42340&page=1&pp=20 (1194 words)

	HTGuide Forum - I believe in HDCD
		I have HDCD discs from Classical.......to Country and Rock.
		And because they are mastered so well, you do not need HDCD decoding to enjoy the benefits of this.
		I currently own one HDCD disc by Jonathan Butler and a few songs that are not labled as HDCD on the disc, but recorded in HDCD.
	www.htguide.com /forum/printthread.php4?t=8629 (647 words)

	Hydrogenaudio Forums -> Is there any MP3 encoder supports HDCD
		This is file 1 which simulates a HDCD file because it should have information besides noise down to the 20th bit now.
		The volume gain defined in HDCD can be up to +6 db at -9 db, that is boosting -15 db to -9 db.
		On the other hand I don't know if the HDCD decoder is able to start decoding at any position of a file, so it would be safest to take the first few seconds from the first track of the CD.
	www.hydrogenaudio.org /forums/index.php?showtopic=5034&st=15 (2157 words)

	HDCD (High Definition Compatible Digital) from Pacific Microsonics - TimeForDVD.com
		The HDCD enhancement algorithm is invented and licensed by Pacific Microsonics.
		HDCD enhanced CDs are identified by the HDCD logo on the front and/or back cover, and are backwards compatible with non-HDCD enhanced playback equipment (you simply hear the quality of regular audio CD).
		These models are identified with the same HDCD logo on their faceplate.
	timefordvd.com /ref/HDCD.shtml (304 words)

	HDCD Frequently Asked Questions
		HDCD recordings have a dynamic range and resolution and, best of all, the HDCD decoder chip used in consumer products also contains the HDCD high-precision digital filter that improves the sound quality of all types of digital audio recordings.
		When an HDCD recording is made, the mastering engineer has several HDCD-encoding options that are used depending upon the type of music.
		A: Some HDCD recordings do not include the HDCD logo, because the artwork for the CD was completed prior to the mastering process.
	www.microsoft.com /windows/windowsmedia/forpros/hdcd/hdcdfaq.aspx (1290 words)

	HDCD CD Player - Harmon Kardon (Site not responding. Last check: 2007-10-08)
		If you want high-quality music playback that can run uninterrupted throughout the day — or for the length of the party — the FL 8385 is for you.
		This five-disc CD changer has a wide range of programming options to play back the perfect mix while High Definition Compatible Digital® (HDCD®) processing delivers the most realistic sound processing to date from both HDCD-encoded and standard discs.
		High-end Burr-Brown® digital processors convert the digital signals back to analog without inducing any artifacts; or use the coax digital output to connect the FL 8385 directly to the processor in your A/V receiver.
	www.harmankardon.com /hdcd_cd_player.htm (100 words)

	HDCD History
		The patented HDCD technology was developed and perfected between 1986 and 1991 by Keith Johnson and Pflash Pflaumer, two preeminent technologists in the audio arena.
		In 1995, the HDCD technology was officially introduced to the market.
		HDCD decoder integrated circuits (ICs), which include HDCD decoding and HDCD filtering, are a worldwide standard in high-fidelity audio systems, with more than 100 models of HDCD-equipped players now available from leading consumer electronics companies like Denon, Harman Kardon, Rotel and Toshiba.
	www.wildwestelectronics.net /hdcdhistory.html (461 words)

	Stereophile: HDCD Spreads Further into the Audio Kingdom
		September 27, 1998 — HDCD and Pacific Microsonics appear to be on a roll these days.
		The HDCD process, developed to coerce 20-bit performance out of the 16-bit CD format, is gaining several new licensees and is also appearing in more devices, as evidenced by several recent announcements.
		Then, using HDCD technology embedded in the Model One, the mastering engineer can "fit" this high-fidelity signal into any release format---CD, DVD, or Surround---while maintaining many of the sonic benefits of the original high-resolution master.
	www.stereophile.com /news/10271 (680 words)

	SH Forums - Burning HDCD to cd-r (unconventional method)
		However, if you play them back on regular (non-encoding) players, they won't have quite the same higher-quality playback as if they were being encoded, although they'll still sound fine.
		From what I understand, the HDCD encoding is in every track, so If you rip a HDCD CD into wav, and then burn it to a CDR, you should have the exactly same track, HDCD encoded.
		HDCD is neat, but it's just anoher technology trying to stuff the 16 bit bag.
	www.stevehoffman.tv /forums/showthread.php?t=33098 (566 words)

	HDCD decoding
		The HDCD encoding process is 20-bits/176.4kHz but that encoding generates a 16-bit/44.1kHz data stream that is modulated and stored to the CD.
		The HDCD decoder in the player uses special processing to restore the music with additional fidelity over a standard 16-bit/44.1kHz CD process.
		Note that neither the bit width or sampling rate of HDCD decoder changed from a standard CD in the player but the processing did change.
	forums.audioholics.com /forums/showthread.php?t=1002 (418 words)

	diyAudio Forums - HDCD Transport Question
		My question is, is a HDCD transport different than a normal CD Transport, and if it is not, then if I put a upsampling DAC in this cd player, will it actually play the HDCD information.
		I would try to get a HDCD player, but this is a modification to my car cd player, and I dont know of any car audio cd players that do HDCD, and I would like to do this in the spirit of learning about these things.
		The best way to get into the HDCD business is to buy a second-hand HDCD player with the PMD-100 or PMD-200 digital filter, and remove it for your own purposes.
	www.diyaudio.com /forums/showthread.php?postid=77456 (464 words)

	Head-Fi (Headphone Hi-Fi and Portable Audio) - HDCD list
		I have been reading a lot about HDCD lately and quite a few audiophiles feel the HDCD sound is superior to SACD and DVD-A! I was quite enthusiastic when I read this.
		So, long answer short, you couldn't count HDCD as 24-bit except by such loose standards that even Redbook qualifies (I think), and it sounds like a buzzword omelet to me. But marketingspeak aside, it is technically and sonically a pretty sweet little thing.
		As for Super HDCD, I found one of my SACDs from FIM (First Impression Music), "Autumn Moon Over A Placid Lake", is marked 24 Bit Super HDCD on both the disc and the packaging.
	www.head-fi.org /forums/showthread.php?p=1093273 (1864 words)

	Fish Records - HDCD Recordings
		Many of the discs we sell are encoded in the HDCD® format (High Definition Compatible Digital®)- a format that is 100% compatible with existing CD players, but when played on a HDCD® enabled player there is better definition and dynamics and added atmosphere in recordings.
		There are thousands more HDCD titles available, but these have been selected because they are some of the best albums we carry, plus they are superbly recorded and the HDCD
		HDCD, High Definition Digital and the HDCD logo are registered trademarks of Pacific Micronosics Inc. Patent No 5,479,168
	www.fishrecords.co.uk /hdcddiscs.htm (244 words)

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