C*Pix SDC2000 Instrucciones de operaciones Pagina 254

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4.8 Audio Menu SDC 2002
4-168
Operating Instructions - Rev. 1 / 6.2003
5. Low Pass
“Low Pass” selection
This pull down menu serves to switch on or off lowpass filters in the respective
audio channel depending on the film sound.
The two lowpass filters attenuate higher frequencies from 5 kHz.
Selection of the lowpass filter for audio channel 1.
The following adjustments are possible:
”Flat (standard setting)”
Film audio channel is not filtered.
Use with good film sound quality.
”5kHz”
Film audio channel is filtered.
Use with bad film sound quality.
6. A/D Convert
“A/D Convert” selection
This pull down menu serves to internally or externally lock the audio A/D con-
verter.
The following adjustments are possible:
“Internal Video“
Locking internally.
Locking of the audio A/D converters is made on the internal video signal (stan-
dard setting).
“External 48 kHz“
Locking externally.
Use when playing the film sound into an external digital audio studio which is
clocked with 48 kHz.
7. Pre-emphasis
“Audio Pre-emphasis” selection
This pull down menu serves to set the preemphasis for both audio input signals
(preemphasis: peaking of frequency components before A/D conversion, for
improving the signal-to-noise ratio).
In the digital AES signal, only a preemphasis information is entered in the
channel status.
In the analog signal, the frequency response is equalized after D/A conversion
in the output stage.
The following adjustments are possible:
“Off“ No preemphasis
“On“ Switching on the CD-type preemphasis (EQ time constant: 50/15 µ s).
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