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Sonoma Audio Workstation User Guide
Copyright © 2003, Sony Corporation of America. All rights reserved.
3.5.1 The Annex E meters are subdivided further
into four types, labeled from left-to-right as
DC, LF, Max Peak, and HF. These meters
are calibrated to display an overload if the
signal has exceeded the Annex E levels.
See Section 3.8, Sonoma Mixer
Specifications. The Annex meters are subdivided into
4 types labeled from left-to-right as DC, LF,
MaxPeak, and HF. These meters are
calibrated to display an overload (red) if the
signal has exceeded the Annex D/E levels.
A brief description of each mode:
DC : Measures the DC offset of the DSD
signal. For SACD, the recommended
maximum DC offset level is -50dB SACD,
although this is not mandatory.
LF : This displays a zoomed-in version of
the main level meters around the 0dB
SACD point. In a previous version of the
Scarlet Book Part 2 , Annex E, there was a
recommended maximum value for the LF
band, but this has been superseded by the
MaxPeak specification and, consequently,
the LF band can be ignored.
MaxPeak : This displays the maximum peak
level of the DSD signal. It is a requirement
for an SACD that the maximum specified
level of 3.10 dB SACD is not exceeded.
Failure to comply with this specification will
result in the master being rejected by the
disc replicator.
HF : This displays the maximum RMS level
of the DSD signal in the 40 kHz - 100 kHz
band. It is a requirement for an SACD that
the maximum specified level of -20 dB
SACD is not exceeded. Failure to comply
with this specification will result in the
master being rejected by the disc replicator.
See Section 3.9, Sonoma Mixer Specifications
for further details.
Correction.
3.5.2 The snapshot SAVE, LOAD and DEFAULT
buttons are used to save or load a snapshot
of the mixer’s settings to or from a file. The snapshot SAVE and LOAD buttons are
used to save or load a snapshot of the
mixer’s settings to or from a file. Correction.
3.5.9 Annex E Filter
The Annex E filter is a variable slope and
frequency low-pass filter provided to control
compliance with
Scarlet Book Annex E
recommendations. By observing the Annex
E meter levels and using these controls, it is
possible to adjust how much energy above
20 kHz to remove, if required.
HF Control (Annex D.4 Filter)
The Annex D.4 filter is a variable slope and
frequency low pass filter provided to assist
with compliance with Annex D.4 of the
Scarlet Book Part 2 (Audio Specification) ,
which specifies the maximum High
Frequency Noise Level. Practically,
this filter can be used in conjunction with the
Annex D meter labeled
HF to correct
signals which do not comply with Annex
D.4. If a DSD signal intended to be put on
SACD exceeds the HF specification
(meters will show an over condition) then
this filter may be used to attenuate some of
the level in the frequency ranges measured
by the HF meters. For best results, the
minimum amount of filtering should be used
to achieve Annex D.4 compliance. For
cases where the HF level is within
specification, this filter need not be used.
Correction.
Section Ver. 1.5.17 Ver. 1.6.1 Remarks