Can signal pattern be detected and standardized for varying movement speeds?

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In summary, the person is asking if there is a method to convert or compress a signal from an accelerometer so that the same movement appears as a similar wave regardless of how fast or slow it is done. They are wondering if averaging the data values in groups of 5 could be a solution to standardize the signal.
  • #1
tarantulae
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So I have a signal X, consider it like a signal from an axis of an accelerometer.
This signal is a simple array:
X = [ 200.2, 198.1, 197.2, 195.4, ... ]

The problem I have is that the same movement, imagine a circle or something like that that user does can be done fast or slow (but its the same movement), so I can have the same movement in 20 elements of the array or in 100 elements if it was very slow. Is there any method to convert/compress/transform this signal in a way to have always the same (or similar) wave for the same movement ? I'm new to signal processing and have no idea if there is some method to do that.

Thank you !
 
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  • #2
If you standardise on a 20 element array, then when you have 100 data values, could you average these in groups of 5 data values, to form 20 processed data values for your array? This may introduce a tiny time lag, but lag could be avoided if undesired.
 

1. What is signal pattern detection?

Signal pattern detection is a process of identifying and analyzing recurring patterns in a set of data or signals. It involves identifying specific features or characteristics of the signal that can be used to distinguish it from other signals or noise.

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