F
F
r
r
e
e
e
e
w
w
a
a
y
y
R
R
a
a
n
n
g
g
e
e
S
S
y
y
s
s
t
t
e
e
m
m
U
U
s
s
e
e
r
r
G
G
u
u
i
i
d
d
e
e
P
P
r
r
o
o
-
-
B
B
e
e
l
l
L
L
t
t
d
d
4
4
6
6
H
H
U
U
-
-
F
F
r
r
e
e
e
e
w
w
a
a
y
y
R
R
a
a
n
n
g
g
e
e
S
S
y
y
s
s
t
t
e
e
m
m
U
U
s
s
e
e
r
r
G
G
u
u
i
i
d
d
e
e
SWAP -
Swap left and right channels
MONO -
Sum left and right channels
NORM -
Normal crosspoint
Source
Destination
Result
BOTH
MONO
BOTH
BOTH
SWAP
BOTH
BOTH
NORM
BOTH
SWAP
MONO
MONO
SWAP
SWAP
NORM
SWAP
NORM
SWAP
NORM
MONO
MONO
NORM
SWAP
SWAP
NORM
NORM
NORM
From this table some general rules about stereo audio switching can be obtained:
·
a left to both or right to both source will override any destination feature.
·
a normal source will be overridden by the output feature.
·
a normal destination will be overridden by the source feature.
·
a mono destination will override a normal or swapped source.
·
a swapped source and a swapped destination will result in a normal crosspoint.
These features are stored on a source and destination basis in the database for each
stereo analogue audio level configured. Each crosspoint is sent together with three
extra audio bits to specify the appropriate feature.
More information is given in the second part of this manual.