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- Remastered At – UMRK
Au20 is a select series of the "sonic bests" from the Rykodisc and Hannibal catalogues.
The Au20 trademark distinguishes audiophile editions of 20-bit digital masters, "noise shaped" from 20-bit to
16-bit, and replicated on 24k gold CDs. To insure the most accurate reproduction of the music, all analog to 20-bit digital conversion in the Au20 series is from the original analog master tapes.
Apostrophe C) Au20 Edition Number: XXXX
Transfer Engineers: David Dondorf, Spencer Chrislu • Mastering Engineer: Spencer Chrislu • Mastering Facility: The Utility Muffin Research Kitchen
This Au20 CD was mastered from the original Dolby A master tapes. Playback was through a specially-enhanced Ampex ATR-102 using audio cards upgraded by John Musgrave and courtesy of The Complex recording studios. No equalization, compression, limiting or other 'enhancement" of any kind was added during the transfer.
The analog-to-digital conversion was done through a dB Technologies™ AD122 converter in the 20-bit mode, directly to the hard disk of the Sonic Solutions digital mastering workstation.
Once edited into the final form, the program was transferred through the Sony SuperBitmapping process integrated into the Sonic System. This "noise-shaping" process allows the music to be captured in 16-bits while maintaining the optimal signal-to-noise equivalent of 20-bits. This 16-btt "Super Bit Mapped" PCM 1630 master was then used in the production of the Au20 CD.
Super Bit Mapping
In recent years, new research has led to the development of several technologies that dramatically improve digital recording. Among the most notable is the ability to record with 20-bit resolution which provides unprecedented dynamic range and clarity. But these 20-bit master recordings must still be transferred back to 16-bit in order to be used for producing Compact Discs.
During this transfer process, distortion can increase through the practice of cutting-off, or truncating the recording's four least significant bits. Or, in some cases engineers will add "white noise" (called redithering) during this stage, which impairs the music's signal-to-noise.
Super Bit Mapping (SBM) is a sophisticated psycho-acoustic-based system that redistributes transfer noise within the portion of the audio spectrum that is virtually inaudible. With SBM, audiophiles can appreciate the benefits of 20-bit sound on Compact Discs that retain full compatibility with all CD players.
(For more information on the Super Bit Mapping process, please write Sony Software, 711 Fifth Avenue, New York, NY 10022)
© 1996 Rykodisc
Limited Numbered Edition Au20 20 Bit Master/24K Gold CD.
This is the US issue.
For the Japan issue see here: Frank Zappa - Apostrophe (')
P 1974 + 1995 Zappa Family Trust.
Printed In The USA. Manufactured In Canada.
Barcode and Other Identifiers
- Barcode: 0 14431 85192 6
- Matrix / Runout (Mirrored): DADR 0RR32<910>RCD80519
- Mastering SID Code: IFPI L482
- Mould SID Code: IFPI 8102
Other Versions (5 of 91) View All
|DS 2175||Frank Zappa||Apostrophe (') (LP, Album)||Discreet||DS 2175||US||1974||Sell This Version|
|DS 2175||Frank Zappa||Apostrophe (') (LP, Album)||Discreet||DS 2175||US||Unknown||Sell This Version|
|K 59201||Frank Zappa||Apostrophe (') (LP, Album)||Discreet||K 59201||Italy||1974||Sell This Version|
|DIS 59201||Frank Zappa||Apostrophe (') (LP, Album, RP)||Discreet||DIS 59201||Germany||Unknown||Sell This Version|
|K 59201||Frank Zappa||Apostrophe (') (LP, Album, TP, W/Lbl)||Discreet||K 59201||UK||1974||Sell This Version|