DCS Delius - De-Emph - De-Emphasis Behaviour; Phase - Overall Phase

dCS Delius User Manual Manual for Software Issue 2.3x
dCS Ltd September 2004
Manual filename: Delius Manual v2.3x.doc Page 27 email: more@dcsltd.co.uk
English version web-site: www.dcsltd.co.uk
Bright x
Bright xBright x
Bright x - Display Brightness
This adjusts the brightness of the main display, with settings between 7
(brightest) and 0 (off, unless something is touched).
do this: Open the Menu and step through until the display shows Bright x, where x is a
number between 7 and 0.
do this: Press the
Select button repeatedly and the display cycles through Bright 7,
Bright 6, ......., Bright 1, Bright 0 and back to Bright 7.
After time-out, a setting of Bright 0 blanks the display unless the unit is not
locked. Operating any control or locking to a source while in this mode turns the
display back on momentarily.
Phase
PhasePhase
Phase – Overall Phase
This option allows you to invert (reverse the phase of) both channels to correct
a system phasing error.
do this: Assuming the unit is set for phase normal, open the Function Menu and step
through until the display shows Phse:Nor.
do this: Press the
Select button once to phase invert.
The PHSE indicator will light and the display will change to Phse:Inv.
do this: Run through this sequence again if you want to change back.
De-Emph
De-EmphDe-Emph
De-Emph - De-Emphasis Behaviour
Recording with high frequency emphasis is a hangover from the days of
recording onto noisy magnetic tapes. To combat tape hiss, the high frequency
part of the music was recorded at a higher level (pre-emphasis). The high
frequency response was corrected at playback by a de-emphasis filter, reducing
the hiss level as well. Digital radio also can use CCITT pre-emphasis, to help
keep the bit rate down.
Some early CDs were recorded with 50/15µs emphasis, but more recent disks
have a flat frequency response. The emphasis used during recording is
encoded in message flags, buried in the data stream. On some disks, these
flags are incorrect, resulting in a bumpy frequency response. Delius can apply
de-emphasis for sources with sample rates of 32, 44.1 or 48kS/s – it is not used
for 96kS/s or SACD recordings.
The options available are:
Off Applies no de-emphasis and ignores message flags.
Auto Automatically applies the de-emphasis curve indicated by
the message flags in the data stream.
50/15us Applies 50/15µs de-emphasis curve and ignores
message flags.
CCITT Applies CCITT J17 de-emphasis curve and ignores
message flags.
To change the De-Emph setting, do the following:
do this: Open the Function Menu and step through until the display shows DeEmph.