About Uv22Hr Super Cd Encoding; Uv22Hr Process Application - Apogee PSX-100 Operating Manual

CONDITION
Fast mode (ie, x2Fs LED lit)
Fast mode (ie, x2Fs LED lit)
Analog Monitor Mode
Digital Copy Mode
Analog Monitor, DIP1 OFF
(TDIF clock = WC), had been
on TDIF, A/D SYNC = WC
Fast mode (ie, x2Fs LED lit)
Fast mode (ie, x2Fs LED lit)
Digital Copy Mode

About UV22HR Super CD Encoding

Squeezing more performance from a digital recording is not a new idea. It began with adding white noise, called
dither, to the digital audio. Plain dither was followed by different flavors of dither noise, then a process called
'noise shaping', and various forms of so-called 'bit mapping'. Systems have been introduced that store control
information in the least-significant bits and use a special decoder to recover the data on playback.
Independent listening tests confirm that these systems either color the recordings we are trying to pre-
serve, or compromise the audible noise floor. Encode/decode systems may sound good if they are decoded,
but almost nobody owns a decoder!
Apogee UV22HR Encoding – the latest and most powerful development of Apogee's original UV22 process
– is an entirely different approach. UV22HR does its job without sonic compromise, and without adding a sound
of its own, preserving the sound stage and tonal balance of the original high-resolution source. The effects are
even audible on original 16-bit recordings.
UV22HR Encoding adds an inaudible, algorithmically-generated concentration of energy around 22 kHz.
Much as the bias on an analog tape recorder smooths out magnetic tape recording non-linearities, UV22HR
silently captures resolution beyond 20-bits on a standard, 16-bit CD. In addition, this inaudible carrier smooths
the rough edges of even the most inexpensive CD player or external converter. UV22HR makes your recordings
sound better on all listening systems. Running already-mastered 16-bit sources through a UV22HR processor
delivers sonic improvements that any user can realize on equipment they already own.
UV22HR is a very special information carrier: it is not a new flavor of dither noise. The truly unique statisti-
cal properties of UV22HR guarantee a constant white noise floor, very similar in character to analog tape noise,
no matter what the input source. If you listen to a UV22HR encoded recording, you can hear a stable, accurate
sound stage and faithful tonal balance more than 24dB into the noise – just as you do on analog tape.
Yet the UV22HR's low audible noise floor sits at the theoretical limit for a 16-bit system. Nothing is lost –
but a great deal is gained. In listening test after listening test, engineers and reviewers alike choose UV22 over
all other systems. Many thousands of CD titles have already been mastered using Apogee UV1000 Super CD
Encoders, the AD-1000, and the industry-standard AD-8000 and PSX-100. Apogee's UV22 is today in use in the
vast majority of US mastering houses, and it is estimated that as many as 80% of the hit records mastered in
the United States today utilize UV22.

UV22HR Process Application

UV22HR Encoding is best applied as the final step in the signal chain before the actual mastering device. For
example, if you are mastering a conventional 16-bit CD, but you have the ability to employ higher-resolution
devices earlier in the chain, you should keep your signal at the highest resolution possible until the creation of
the final master tape, and at that point apply UV22HR to reduce the word-length from high-resolution to the
final 16-bit for Compact Disc. If you are recording at high density (long word-lengths, and 88.2/96 kHz or high-
er sample rates) and need to generate a 44.1 kHz 16-bit CD master or a 48 kHz 20-bit DVD-Video master, first
handle the sample rate conversion at the maximum word length available; then use UV22HR to reduce the
word-length when you have a 44.1/48 kHz signal. Sample-rate conversion is a tricky business at best, and you
need the maximum resolution available when you do it. This is why we do not provide UV22HR at high sample
rates.
PSX-100 User's Manual
ACTION (press...) LED FLASHES
ABS x2Fs
UV22 x2Fs
DIG COPY A/D OUT
& hold D/A INPUT DIG COPY
A/D SYNC TDIF
MDM IN x2Fs
& hold MDM IN x2Fs
A/D SYNC DIG COPY
Page 28
REASON
ABS does not work in FAST mode
UV22 does not work in FAST mode
Can't go directly from Analog Mon to Digital Copy
Can't go directly from Digital Copy to Analog Mon
If D/A is TDIF, A/D Sync cannot be DIG IN
because DIP 1 is set so that the clock for TDIF
is word clock (DIP 1 = OFF) not LRCK.
Can't change channel routing in FAST
Can't change channel routing in FAST
A/D SYNC must remain on DIG IN
when in DIG COPY mode