3D Audio - Garmin GMA 350c Pilot's Manual

GMA 350/350c Audio Panel
S -PA M
PLIT
During Split-PA Mode the pilot can continue to use the radio(s) while
the copilot delivers PA announcements. To initiate Split-PA Mode, first
enter Split-COM Mode by pressing both MIC Keys simultaneously,
then press and hold the SPKR Key for 2 seconds.

3D AUDIO

3D Audio is useful when multiple audio sources are present. By using
different responses in each ear, 3D audio processing creates the illusion that
each audio source is coming from a unique location or seat position.
Because this feature uses different signals for left and right channels, it
requires wiring for stereo intercom and stereo headsets. If 3D audio is
activated when mono headsets are in use, the listener will still hear all audio
sources; however, there is no benefit from location separation.
With a single COM selected and 3D Audio enabled, the listener hears
the audio source at the 12 o'clock position. If both COMs are selected,
the listener hears COM1 at 11 o'clock and COM2 at the 1 o'clock position.
All other intercom positions are processed to sound like their relative seat
location. By default, the GMA 350/350c assumes the pilot sits in the left
seat. A Garmin authorized service center can make changes to the default
configuration.
E
NABLING
Press and hold the PILOT Key to toggle 3D audio processing on and
off for all headset positions. When 3D Audio is enabled, the aural
message "3D audio left" is heard in the left ear followed by "3D audio
right" in the right ear. If the aural messages are not heard in only the
left and then the right ear respectively, the cause may be aircraft wiring
or headset settings. Refer to the following table if a headset or aircraft
wiring problem is suspected.
26
ODE
3D A
UDIO
Garmin GMA 350/350c Pilot's Guide 190-01134-12 Rev. K