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Impact Trigger Options
To access the Trigger Options window, launch the V1, select
Trigger tab. You will see this window:
Options
and then the
Using this window, you may specify the size of the buffer (in seconds) used to capture
the video. Golf swings typically can be represented adequately in a 3 second time
window. Other motions may require varying amounts of time. Each second of video
will consume approximately 3½ megabytes (MB) of your computer’s RAM memory (7
megabytes for dual-camera mode). If your system has only 512MB RAM, for example,
it may be impractical (more likely impossible) to capture 15 seconds of video in dualcamera mode. If your hard drive runs continuously while doing a triggered recording
or video becomes excessively choppy, you may be experiencing a low-RAM situation.
The impact at setting allows you to graphically specify the point of impact within the
captured video files. In a 3 second golf swing, about 1 second should be allocated to
“follow through”—so that leaves 2 seconds as the impact position within the video. In
other words, the difference between the buffer size and the Impact Position
determines the amount of time that the V1 will continue to record following receipt of
the impact trigger (either from an audio hit detector or a mouse click).
When performing a triggered recording, you may specify the impact position (and end
the recording) by clicking the mouse on the live video window. If the Enable box is
checked, the V1 will also listen to the camcorder or computer’s microphone for the
sound of impact (the sound of the club or bat hitting a ball, for example).
You may choose to use either your camcorder microphone, your computer’s built-in
microphone or an external microphone by selecting the appropriate device in the dropdown boxes.
There are two parameters which affect the audio trigger. The first is the microphone
Sensitivity. The default sensitivity is 50%, but this may be adjusted lower if you are
picking up false triggers, or higher if the V1 is missing some impacts. The second is
the Frame offset parameter. Very often, due to computer hardware and driver
latencies and buffering, the computer microphone’s audio and the capture card’s video
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