User`s manual

V 1 P R O F E S S I O N A L 5 . 7
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or subtract a small number of frames from the impact frame number that the V1
computes based on audio received. With full” and even “half preview-resolution
DV video, it is not unusual that this value be as great as +/- 10 or more. Under
situations of varying computer load (other software running, or use of laptop battery),
an accurate setting of the adjustment may also drift. Experience will determine the
optimal setting for your particular system configuration.
Testing the audio trigger
The boxes that you see to the right of the
Enable
check box are used to test the audio
trigger. As the microphone you’ve selected picks up sound, you will see this graphically
represented in the form of a blue “meter. When the V1 interprets the sound as an
impact, a red square is illuminated. Adjust the sensitivity setting until the desired results
are achieved. Note that this testing feature does not apply to the camcorder
microphone setting.
If you are unable to achieve enough sensitivity, you may need to enable the
“microphone boost” setting on your Windows control panel. To find this check box,
click the Windows Start button then open the Control Panel. Open the “Sounds and
Audio Devices icon. Click on “volume” under sound recording, then Advanced
under the microphone column.
Recording Audio
Audio may be recorded and played back if a tab is recorded using the
Continual
recording mode. Audio is never recorded when using the
triggered recording modes.
Audio is always recorded from the camera’s built-in microphone when using a
DirectShow video driver to capture DV video (as from an IEEE-1394 or FireWire
®
camera). To record audio when using a Legacy VfW video capture driver, you must
select the
Audio
button before recording begins.
NOTE:
When in “Legacy VfW” mode, depending on the driver, audio may be
recorded from either the camera’s microphone or the PC’s microphone.
When a video is recorded with audio, a smallloudspeaker” icon will appear in the
preview window when you move the cursor over a video’s tab. To hear this audio, you
must select the
Audio
button before video playback begins.
The HYTEK USB Force Plate
The V1 can interface with your HYTEK USB force plate in order to display and
record a person’s relative weight distribution during a golf swing or other athletic
motion. With this information, you are able to visualize the way in which weight is
shifted from side to side, front to rear, etc., during the motion. NOTE: This is a
feature which may require special licensing; your V1 license must have the force plate
feature enabled.