IIR MoCap Filters

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Screen shot from the help patch.

In this Max/MSP patch we have implemented a range of real-time IIR filters applicable for motion controllers, more specifically, low-pass filters and low-pass differentiators of degree 1 and 2. The latter can be used to extract velocity and acceleration data directly from position data. All filters have a group delay of 2 samples or less and have better low-delay performance than what currently established filter design methods can create. See [1] or the project page for more information.

[1] Skogstad, S. et al., Filtering Motion Capture Data for Real-Time Applications, In proceedings of NIME (2013)

By Ståle A. Skogstad, Kristian Nymoen
Published Apr. 16, 2013 6:20 PM - Last modified Oct. 22, 2020 1:41 PM