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| [#1] SACD & 24bit/96hz file 的比較 SACD 是 1bit/ 2822.4 kHz, 而現時的High Resolution Music file 是24bit/96hz, 照specification是那一個高d呢? 而音質又是邊個好d呢? |
Ray@_@ 正式會員218.xxx.xxx.224 |
2010-03-12 01:44 | |
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| [#2] SACD & 24bit/96hz file 的比較 Sound quality also depends on the recording source, mastering engineering and those post manufacturing works. The spec. you quote is just a format..... |
Vash 正式會員 219.xxx.xxx.171 |
2010-03-12 04:28 |
| [#3] SACD & 24bit/96hz file 的比較 咁照specification是那一個高d呢? |
Ray@_@ 正式會員 218.xxx.xxx.224 |
2010-03-12 11:19 |
| [#4] SACD & 24bit/96hz file 的比較 pls read http://en.wikipedia.org/wiki/Super_Audio_CD |
cryingfreeman 正式會員 218.xxx.xxx.35 |
2010-03-12 11:46 |
| [#5] SACD & 24bit/96hz file 的比較 citation Technical background DSDlogo.png Main article: Direct Stream Digital SACD audio is stored in a format called Direct Stream Digital (DSD), which differs from the conventional Pulse-code modulation (PCM) used by the compact disc or conventional computer audio systems. DSD is 1-bit, has a sampling rate of 2.8224 MHz, and makes use of noise shaping quantization techniques in order to push 1-bit quantization noise up to inaudible ultrasonic frequencies. This gives the format a greater dynamic range and wider frequency response than the CD. The SACD format is capable of delivering a dynamic range of 120 dB from 20 Hz to 20 kHz and an extended frequency response up to 100 kHz, although most currently available players list an upper limit of 70–90 kHz,[32] and practical limits reduce this to 50 kHz.[1] Because of the nature of sigma-delta converters, one cannot make a direct technical comparison between DSD and PCM. DSD's frequency response can be as high as 100 kHz, but frequencies that high compete with high levels of ultrasonic quantization noise.[33] With appropriate low-pass filtering, a frequency response of 50 kHz can be achieved along with a dynamic range of 120 dB.[1] This is about the same resolution as PCM audio with a bit depth of 20 bits and a sampling frequency of 96 kHz.[1] pls note that "This is about the same resolution as PCM audio with a bit depth of 20 bits and a sampling frequency of 96 kHz." |
cryingfreeman 正式會員 218.xxx.xxx.35 |
2010-03-12 11:54 |
| [#6] SACD & 24bit/96hz file 的比較 即是如果是24bit/96hz file有同sacd一樣嗎? 即是如果是24bit/192hz file就高過sacd嗎? Thanks |
Ray@_@ 正式會員 218.xxx.xxx.224 |
2010-03-12 12:36 |
| [#7] SACD & 24bit/96hz file 的比較 ray u did not read the doc. -_-...i am blaming you, :P Audible differences compared to PCM/CD In the audiophile community, the sound from the SACD format is sometimes thought to be better compared to older format Red Book CD recordings.[34] However, in controlled blind, level-matched listening tests over stereo reproduction subjects were not able to differentiate SACD recordings from their CD-quality converted version. Instead, the authors suggest that differences in particular mixes for the two formats may be causing perceived differences:[35] Now, it is very difficult to use negative results to prove the inaudibility of any given phenomenon or process. There is always the remote possibility that a different system or more finely attuned pair of ears would reveal a difference. But we have gathered enough data, using sufficiently varied and capable systems and listeners, to state that the burden of proof has now shifted. Further claims that careful 16/44.1 encoding audibly degrades high resolution signals must be supported by properly controlled double-blind tests. Double-blind listening tests reported in 2004 between DSD and 24-bit, 176.4 kHz PCM recordings showed that no significant differences could be heard.[36] Indeed, people have not been able distinguish DSD from CD-quality audio in blind listening tests;[35] people cannot distinguish audio with information above 21 kHz from audio without such high-frequency content. |
cryingfreeman 正式會員 218.xxx.xxx.35 |
2010-03-12 12:45 |
| [#8] SACD & 24bit/96hz file 的比較 spoon feeding is everywhere.... |
hercules 正式會員 219.xxx.xxx.134 |
2010-03-12 13:01 |
| [#9] SACD & 24bit/96hz file 的比較 hercules hing it is ok la... i reply and post due to his member no, at 2001 may be a old guy! |
cryingfreeman 正式會員 218.xxx.xxx.35 |
2010-03-12 13:04 |
| [#10] SACD & 24bit/96hz file 的比較 而音質又是邊個好d呢? depend on whether you are using real sacd decoding chip |
batmanames04 正式會員 114.xxx.xxx.235 |
2010-03-13 08:20 |
| [#11] SACD & 24bit/96hz file 的比較 SACD 有好明顯立體感, 24/96 or 192 都出唔到 SACD 既效果 |
pc33 正式會員 113.xxx.xxx.119 |
2010-03-13 17:09 |
| [#12] SACD & 24bit/96hz file 的比較 pls note that "This is about the same resolution as PCM audio with a bit depth of 20 bits and a sampling frequency of 96 kHz." The above information is INCORRECT - like they say never trust wikipedia. SACD/DSD has higher resolution (time and transient response) than 24/96 and 24/192 pcm. read more here: http://www.physics.sc.edu/kunchur/Acoustics-papers.htm  |
audioholik 正式會員 95.xxx.xxx.158 |
2010-03-13 17:42 |
| [#13] SACD & 24bit/96hz file 的比較 SACD IMHO lacks of solid texture as good as PCM at 24bit/96Khz, though SACD sounds as if an analog vinyl tingled with audible compression. If SACD is really cool, I doubt why record company or filmscore production would be so reluctant to invest more for new audio or soundtrack recordings (except SONY, 2L, Mravinsky and Pentatone). 最後修改時間: 2010-03-13 21:47:47 |
george1977 正式會員 61.xxx.xxx.107 |
2010-03-13 21:44 |
| [#14] SACD & 24bit/96hz file 的比較 george1977, filmscore productions doesn't care about transient response. SACD is a high-end audio format for companies like Analogue Productions, Channel Classics, Mariinsky, Mofi, etc.. |
audioholik 正式會員 95.xxx.xxx.65 |
2010-03-13 22:11 |
| [#15] SACD & 24bit/96hz file 的比較 Post production and production cost will be one of the consideration, one multi channel hybrid SACD required 3 mixes (CD stereo, SACD Stereo, SACD M.Ch), for example, Reference Recordings Britten The Young Person's Guide to the Orchestra Red book released in Nov 2009 but Multi-Channel SACD version come later around April 2010. And Sony stopped SACD plant in US, now only Austria, Germany and Japan have SACD pressing plant, SACD pressing capacity is really limited, If license holder like Philips and Sony did gives facilities and support to the recording industry, the SACD is really hard to have more penetration in consumer market. And the sound progress of DSD converters was really slow, firstly dCS, then Meinter(sound too cold to my ear) and finally Grimm AD1 gives SACD have more nice sound as this format should be, Channel Classics recording made with Grimm like Mahler 4, Beethoven Cello Sonatas and Mozart Violin Sonatas sounds really gorgeous. |
hercules 正式會員 219.xxx.xxx.134 |
2010-03-13 22:42 |
| [#16] SACD & 24bit/96hz file 的比較 filmscore productions doesn't care about transient response -------------------------------------------- Really! then most filmscore producers (such as George Lucas)or composer (Hans Zimmer) must be either dumb or nuts in your eyes. ^.^ I rather would say that filscore for blockbuster film is more demanding than music production on transient response, dynamic and time precision (must be god-damn 100% matching with the dialogue and scene) , there is no recording engineer or mixing engineer in Hollywood would mix their tracks by digital console (such like DSD), pure analogue console and PCM mode are still their second-to-none choice ! Still the SACD is a niche market! BTW, my recording engineer friend said that SACD resolution is in the middle between 24/96 and 24/192, after years of use and numerous audition, he gave up DSD recording and SACD. |
george1977 正式會員 61.xxx.xxx.107 |
2010-03-13 23:40 |
| [#17] SACD & 24bit/96hz file 的比較 Hercules You have more neutral view George |
george1977 正式會員 61.xxx.xxx.107 |
2010-03-13 23:41 |
| [#18] SACD & 24bit/96hz file 的比較 And the sound progress of DSD converters was really slow, firstly dCS, then Meinter(sound too cold to my ear) and finally Grimm AD1 gives SACD have more nice sound as this format should be, Channel Classics recording made with Grimm like Mahler 4, Beethoven Cello Sonatas and Mozart Violin Sonatas sounds really gorgeous. -------- Agree 100% |
audioholik 正式會員 95.xxx.xxx.65 |
2010-03-13 23:54 |
| [#19] SACD & 24bit/96hz file 的比較 BTW, my recording engineer friend said.. ------ I know ^_^ |
audioholik 正式會員 95.xxx.xxx.65 |
2010-03-13 23:59 |
| [#20] SACD & 24bit/96hz file 的比較 I don't look at the propaganda materials but hearing to the resultant sound and look at the market instead. It's matters of choice up to engineers and recording companies, also how the market reaction, and now most of the SACD are not DSD recorded, still have more than 70% converted from Hi-Rez PCM, SACD is only a carrier, use of SACD have no contradiction of using DSD or PCM as recording format. But you know SACD is only choice for hi-end stereo and multi-channel playback with most installed platform yet(plenty of over 100K system) (blu-ray audio only is not a standard yet, still required you to play with monitor on), and some engineers pursuit for Pure DSD only for best musical presentation (mostly Holland based, like STS, Channel Classics, Pentatone/Polyhymnia and manufacturer like Grimm, again, Holland based). And as I told before, DSD platform still have room for development, latest Sony Sonoma workstation allow level adjustment without conversion to PCM, plus DXD (PCM) and new generation of converter, the sound quality is pleasing me more and more with more recent releases. And now multi-core multi-way workstation is so affordable now, conversion between DSD and PCM is not as painful as before, and Weiss SaRaCon made virtually distortion-free DSD-PCM conversion, people should re-visit to DSD sometimes to see the current progress. And you see Reference Recording's Keith O.Johnson finally jump on the wagon of SACD as he said, the sound quality of SACD converted from his Hi-Rez or Analog Tape finally up to his standard now, never says never! Recent years, must be dark age of recording companies, mp3 shifting listener to goes portable and sharing on internet, nearly bankruptcy of EMI and Decca, no companies willing to invest and bet on new format, new technologies, they're rather play safe and conservative to stay alive. Only niche and audiophile market have pretty stable and royality users, and small enough to be flexible to change, that's why SACD still able to survive in hard time (but still not easy for them) But the live or dead of SACD still on the hands of Sony and Philips(well, Philips have very little involvement now I think), just hope SACD won't die earlier than it should be. 最後修改時間: 2010-03-14 00:20:43 |
hercules 正式會員 219.xxx.xxx.134 |
2010-03-14 00:11 |
