Fostex 1240 - Page 15

HI. PING-PONG RECORDING
What is ping-pong recording?
Combining the Payback sounds of a multiple number of
pre-recorded tracks by a mixer, [hers recording the mixed
signal onto another track is called "ping-pong recording,"
This is a very convenient method when a number of
sound sources must be recorded onto a limited number
or tracks as ping-pong recording allows overdubbing new
sound sources over the old tracks.
Refer to Fig. 8, This is an example of stereo mixing with
this mixer the output signals of the E -16 TRK 1 - 7 (the
basic tracks of the above example) and ping-pong
recording on TRK 15 and TRK 16.
GROUP buss 1 and 2 were used Far sends to the
recorder at overdubbing (Refer to Fig. 2) out here, let's
consider using the STEREO buss. The GROUP buss,
of course, can be used but as more input sources can
be mixed by using the STEREO buss, this is especially
advantageous during ping-ponc recording, the reason
for this is in the fact that sounds which have been ping-
pong recorded cannot be separately processed at
mixdown. Consequently, when ping-pong recording, it
is necessary to process the tracks brforc they are sent
to the recording track. Thus, the buss which allows mixing
more effect returns will be better
First, output signals of TRK 1 - 7 are connected to the
Channels 1 - 7 INPUT faders {17) (GROUP/SUB
selector (2) -* ■ SUB). Then, these signets are sent to the
STEREO buss by the assign L-R switch (12) and PAN
(13), and further, sent via (ho STEREO master fader (23)
to TRK 15, 16 from the STEREO OUT jack 1 (43).
Tor monitoring the TRK 15, 16 output signals are sen!
to SUB MiX sections (3), (4) (GROUP/SUB selector (2)
-* GROUP), and the CUE buss is monitored by setting
the CUE/L-R selector (5) to CUE (CUE master level knoh
(31) -> raise Fever; MONITOR selector (26) - CUE). For
effect processing, D,OUT jack (38) and AUX 1 ~ 4
sends (8) are used. The relurns from D.OUT jack (33)
is connected to INPUT jacks (33), (34) of the same
channel, sound volume and perspective determined at
the SUB MIX sections (3) and (4), then sent to the
STEREO buss by the C U E/L -R selector (5) Effect returns
from the AUX OUT jacks 1 ~ 4 (39) are connected to
the channels 15-16 INPUT jacks (33) and (34), each
sound volume adjusted by the INPUT fader (17), the
perspectives set by the assign L-R switch ( 1 2 ) and PAN
(13), then sent to toe STEREO buss. Effect sound timbre
is adjusted by EG (7).
When ping-pong recording by this method, be careful in
selecting I he GROUP/SUB selector (2) for channels 1
~ 7 and 15, 16, in addition to precautions In the
schematic. If these selections are made in reverse, it will
create a loop between the effect INyOUT and between
IN,'OUT of TRK 15, 16, and could result in feedback.
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