DSP: Superimposing quasi periodic signals

Discussion in 'Programmer's Corner' started by John Downs, Sep 13, 2012.

  1. John Downs

    Thread Starter New Member

    Sep 13, 2012
    Hi everyone.

    I'm new to signal processing. I'm doing a project in matlab that involves using the coherent averaging technique to remove the noise (generated digitally with a mean of zero) from biomedical signals (like egg and emg signals). To do this I need so superimpose the signals to cancel the noise but I don't know how to do it when the frequency varies over time:confused:. Is there some kind of algorithm to deal with this problem? If they were periodic I think it would be much easier. Thanks in advance for your help.