In addition to the Common Menu Functions,
the following CogniVideo-specific menu functions are provided.
The Minimum Audio Detection Count parameter determines how fast audio will be detected.
The audio signal is very slow compared with the video signal. For example, in one video frame,
that is, 17ms, it is easy to miss audio. The CogniVideo device detect zero-crossings of the
audio signal. That means, we need to see at least one transition in a frame of video. The bottom
octave of piano keys are so slow, they won't guarantee even one transition. To get at least two,
you should use audio that is at least 100Hz. Then to eliminate spurious detection, we
require that at least two frames both have sound detected. You may wish to set this to a different
value, but not less than one.
This parameter is only of any use if the Sound/Silence Audio detection Input Mode is used.
Similar to the above, but the number of frames that must not have any audio transitions before
the CogniVideo declares that silence has been detected. Useful if your audio stream has
significant gaps. If you wish to span, say 0.5 sec gaps, set this to 30.
This parameter is only of any use if the Sound/Silence Audio detection Input Mode is used.
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