ENH: Overlap-add filtering for long signals#10
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agramfort merged 6 commits intomne-tools:masterfrom Nov 12, 2011
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would it make sense to pass a filter length to the *_filter functions to let users specify the frequency resolution they want (like mne_process_raw does) something like: where XXX is None means use full signal FFT or XXX=4096 means use overlap add with buffers of size 4096. It seems like exposing the N_fft parameter (that btw should be nfft or n_fft) |
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Improved code based on your comments. The test now compares direct filtering and overlap-add filtering. Note that due to the different types of convolution (circular and linear with mirrored boundary), the edges of the filtered signal are slightly different. I don't think it is possible to avoid this. |
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you don't need the \ in parenthesis
larsoner
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Feb 5, 2013
ENH: adding a test for channels / bads mismatch
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Added zero-phase overlap-add filtering for signals longer than 60s (direct FFT filtering is faster for shorter signals). Unified filter function for low/high/band - pass.