visual3d:documentation:pipeline:signal_commands:moving_rms
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visual3d:documentation:pipeline:signal_commands:moving_rms [2024/06/14 17:30] – created sgranger | visual3d:documentation:pipeline:signal_commands:moving_rms [2024/07/17 15:46] (current) – created sgranger | ||
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- | |**Language: | + | ====== |
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- | |===== Contents =====\\ \\ \\ \\ * [[# | + | |
The **Moving_RMS** command computes the linear envelope of a signal (typically an EMG signal) by calculating the RMS value within a moving window. The RMS is described [[http:// | The **Moving_RMS** command computes the linear envelope of a signal (typically an EMG signal) by calculating the RMS value within a moving window. The RMS is described [[http:// | ||
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- | [[File: | + | {{:Moving_RMS.png}} |
- | ===== Frame Window | + | ==== Frame Window ==== |
The command Moving_RMS computes the RMS of a signal by calculating the RMS value for short successive time periods (the time period is described as a moving window). In Visual3D the windows overlap. The output value at each frame is the RMS of the window centered on that frame (e.g. the RMS value for each window is plotted at the time corresponding to its center) so the number of frames in the window must be an odd number. | The command Moving_RMS computes the RMS of a signal by calculating the RMS value for short successive time periods (the time period is described as a moving window). In Visual3D the windows overlap. The output value at each frame is the RMS of the window centered on that frame (e.g. the RMS value for each window is plotted at the time corresponding to its center) so the number of frames in the window must be an odd number. | ||
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- | ===== Pipeline commands for specifying a window of 100 ms ===== | + | ==== Pipeline commands for specifying a window of 100 ms ==== |
A more typical window for the RMS filter is 100 ms, which can be achieved as follows: | A more typical window for the RMS filter is 100 ms, which can be achieved as follows: | ||
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- | ===== Pipeline commands for specifying a window of 150 ms ===== | + | ==== Pipeline commands for specifying a window of 150 ms ==== |
To specify a 150 ms (0.15 seconds) window for the RMS, the commands are as follows: | To specify a 150 ms (0.15 seconds) window for the RMS, the commands are as follows: | ||
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visual3d/documentation/pipeline/signal_commands/moving_rms.1718386217.txt.gz · Last modified: 2024/06/14 17:30 by sgranger