Section 34: Matrix Map Tab
T
ieline
Page 324
T E C H N O L O G Y
2
. These matrices are only preprogrammed to be used in the manual default
profile
Man Dflt Mono/IFB
. Any codecs using the
Manual Default Mono/IFB
profile, or a similar profile, need to ensure that incoming audio is set to be
received via
Accept remote cue
. This is enabled as a default for the
Manual
Default Mono/IFB
profile.
34.9.
Talkback
The talkback (
TB
) function is usually provided for ‘discreet’ producer/director
talkback facilities between the local and remote codecs. There are two sets of
matrices for talkback communication. Two are for talkback send (
TB tx
) and two
are for talkback receive (
TB rx
). The send matrices are activated by pressing a
pre-programmed
SOFTKEY
on the codec. The receive matrices are used when a
talkback command is received over the POTS, ISDN or IP link.
The
View Matrix
settings for
TB tx
(talkback send) in the following image show
that
Input 1 TB
is being sent to
Encoder 2
and
HP1R
.
Input 2 TB
is being sent to
Encoder 2
and
HP2R
. The talkback settings are ‘discreet’ in that
TB
listen is only
activated on the input from which audio is being sent. (Related Topic: Talkback
Level Adjustment)
Figure 99: TB Tx as Viewed in View Matrix within the Profile Editor
The matrices used in the above image are
Manual Default Talkback tx 1 & 2
.
These matrices are pre-selected in all manual default profiles except
Man Dflt
Stereo
and
Man Dflt Dual Pgm
.
TB
Rx
(talkback receive) is also ‘discreet’ in that incoming audio is routed to
either commentator 1 or 2 (
HP1R
and
HP2R
) as required via
Decoder 2
as
shown in the following image.