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dCS 974 User Manual Manual for Software Version 1.0x
dCS Ltd May 2001
Manual part no: DOC1241121A1
Page 72
Document No: OS-MA-A0124-112.1A1
Contact
dCS
on + 44 1799 531 999 email to: more@dcsltd.co.uk
(inside the UK replace + 44 with 0) web site: www.dcsltd.co.uk
SACD
13
specifies ultrasonic noise in two bands. These are specs informative
specs E2 and E3, and filter performance for a number of specs including these
are given below. The measurements given have been made using a Fourier
Transform based method.
Filter Comments SQNR
(20 kHz,
dB)
SQNR
(
F weighted
dB)
E2 spec
(dB)
E3 spec
(dB)
1
High SQNR,
high stability
126.14 -136.56 -25.98 -28.96
2
High SQNR 127.23 -138.76 -25.85 -28.95
3
High SQNR,
very high
stability
124.66 -134.38 -27.32 -30.49
4
Extremely high
stability
122.07 -129.91 -25.54 -29.53
5
Reduced 100k
noise
122.27 -130.14 -27.13 -31.99
6
Single
complex zero
110.78 -151.02 -25.19 -23.55
7
Real zeros 101.5 -132.41 -25.29 -27.04
SACD Spec -20.00 -28.00
Table 5 – DSD Filter Performance
DSD Data Formats
DSD is supported on SDIF-2, SDIF-3 and DSD Quad formats.
13
Super Audio CD System Specifications, Part 2, Audio Specifications, available from Philips System Standards
and Licensing, Licensing Support, Building SFF-8, PO Box 80002, 5600 JB Eindhoven, The Netherlands.