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4 – Recording—Advanced recording
TASCAM CD-RW4U 25
The conditions under which an input signal is used as
the trigger to start recording are:
• when recording digitally, a digital start signal is
detected, and audio is subsequently detected
or
• the sound level rises above the threshold (see
below) after having been below the threshold for
one second or more. Note that the diagram below
represents a special case (the source is stopped or
paused) of the more general condition, as explained
later:
To start synchronized recording when the source is
stopped or in pause mode:
1 Place the unit in record ready mode, with the
SYNC
indicator in the display lit, as explained
above.
2 Start playing the source. The pause indicator
disappears from the display, and the unit
starts recording.
The conditions under which synchronized recording
stops are:
• when recording digitally, an appropriate digital sig-
nal is detected. If the signal is detected from a CD,
the unit enters record ready mode after 2 seconds.
If the signal is detected from an MD, the unit enters
record ready mode immediately:
Note that the trigger level is not used here.
or
• the sound level drops below the threshold level for
five seconds
If you set the threshold value so that only high-level
signals trigger recording, remember that this will not
record the start of a piece with a slow fade-in:
Also remember that when recording from an analog
source, the threshold should be set so that it is higher
than the “noise floor” (the base level of hiss, pops
and crackles which may come from an older vinyl
recording, for example). If the “noise floor” is higher
level
time
S_LVL
Track start signal
received
Start of recording
Start of recording
noise
level
level
S_LVL
time
level
time
CD stop REC pause
2
seconds
MD stop
REC pause
level
time
level
time
S_LVL
REC pause
5 seconds
S_LVL
level
time
Recording
starts
This part of the
track is not
recorded