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Recording Audio Signals
56
Recording
Two channels (CH-1/CH-2) of audio can be
recorded (Linear PCM recording) in
synchronization with video recording.
Connect the supplied microphone or an external
audio source.
For details, see “Attaching the Microphone” on
page 31.
You can select automatic or manual adjustment
mode independently for each channel.
To adjust the levels automatically (AGC)
When the AUDIO SELECT switches CH-1 and
CH-2 are set to AUTO, the audio recording levels
are automatically adjusted.
Two AGC modes can be selected with “MIC
AGC” of “Audio Input” (page 113) of the
AUDIO SET menu.
High: For general audio recording
Low: For music recording or recording in an
event where high sound pressure may be
generated
To adjust the levels manually
Set the AUDIO SELECT switches CH-1 and CH-
2 to MANUAL and adjust the audio recording
levels by turning the AUDIO LEVEL controls.
Set the controls to 5 for the reference setting (0
dB). Setting to 10 maximizes the level (+12 dB),
and setting to 0 minimizes it (–
∞).
The input levels are displayed on the screen when
you press the DISPLAY/BATT INFO button.
Fine adjustment of the recording is possible using
“TRIM CH-1” and “TRIM CH-2” of “Audio
Input” (page 113) of the AUDIO SET menu, For
high-quality recording, adjust not only the
AUDIO LEVEL controls but also “TRIM CH-1”
and “TRIM CH-2” so that the optimum
microphone sensitivity is obtained. When you
perform fine adjustments with “TRIM CH-1” and
“TRIM CH-2,” set the AUDIO LEVEL controls
to 5 and adjust the items so that the appropriate
meter indications are obtained.
If the maximum sound pressure cannot be
estimated or sudden sound pressure is expected,
set “Limiter” of “Audio Input” (page 113) of the
AUDIO SET menu to “On.”
Notes
• When you manually adjust the recording levels,
check that no distortion is generated, by
monitoring through headphones, etc.
• If the AUDIO LEVEL controls are set to a value
less than 5, the recording levels will not reach
the full scale.
Audio recording in special recording
modes
• No audio recording is made in Interval
Recording or Frame Recording.
• No audio recording is made in Slow & Quick
recording if the recording frame rate is set to a
value different from the playback frame rate.
Recording Audio Signals
Adjusting the Audio Recording
Levels
CH-1 CH-2
CH-1 CH-2
AUTO
MANUAL
AUDIO
SELECT
AUDIO
LEVEL
AUDIO SELECT
switches
AUDIO LEVEL controls
gg
18dB
SHT
:1/2000
5 7 10 15 20 30 oo
m
CH1
CH2