def testPP():
    '[summary]\n    '
    from sigViewer import sigViewer
    ppfn = butterfilt_and_downsample(order=4, stopband=((0, 1), (25, (- 1))), fs_out=100)
    ui = UtopiaDataInterface(data_preprocessor=ppfn, stimulus_preprocessor=None)
    ui.connect()
    sigViewer(ui)
[summary]
def testPP():
    '\n    '
    from sigViewer import sigViewer
    ppfn = butterfilt_and_downsample(order=4, stopband=((0, 1), (25, (- 1))), fs_out=100)
    ui = UtopiaDataInterface(data_preprocessor=ppfn, stimulus_preprocessor=None)
    ui.connect()
    sigViewer(ui)