Halve the double negative ‘if no loopback mode is not available’.
Signed-off-by: Tobias Geerinckx-Rice <me@tobias.gr>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The hardware testing configuration may require the use of an analog cable
connecting target to tester machines or a cable to create an analog
-loopback if no loopback mode is not available on the sound hardware that
-is being tested.
+loopback if no loopback mode is available on the sound hardware that is
+being tested.
An analog loopback cable can be used to connect the "line in" to "line out"
jacks to create a loopback. If only headphone and mic jacks (or combo jack)
are available then the following simple circuit can be used to create an