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  1. #1
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    Real time filtering for EMG

    I am working on a myoelectric control for a manipulative robot. I'm working on Matlab and was using a butterworth high-pass filter (2nd order, 30/500 Hz) to filter out ECG artefact. It works very well but am looking forward to transfer my programs in real time and I am looking for another highpass filter that would work rapidly without dephasing the signal.

    Thank you

    •   Alt8th October 2009, 19:04

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  2. #2
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    Re: Real time filtering for EMG

    For EMG you can implement a FIR filter with the order that you want and can conservate the phase mainly if you apply an IIR will destroy the phase.
    with a MC56F8025 is enough to implement this in realtime the EMG signal are slow signal in comparison with the DSP capability.
    pls review the following link for a cheap CPU.
    http://www.freescale.com/files/dsp/d.../MC56F8025.pdf
    and it's vey easy to integrate with matlab using the FDA tool and fixed point toolkit.



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