POSC Specifications
Version 3.0
Epicentre Standard Values
ref_wavelet_filter_algorithm

ref_wavelet_filter_algorithm

Standard Instance Values

identifier description source _reference source version status
        ref _version .identifier  
Ricker wavelet A zero-phase wavelet, the second derivative of the error function. Dictionary of Exploration Geophysics POSC epicentre 2.1 current
Butterworth filter A type of frequency filter characterized by a very flat passband, often used as an alias filter. Dictionary of Exploration Geophysics POSC epicentre 2.1 current
Hanning function A function used to shape the cutoff of a window or gate in data processing to avoid the undesirable effects of sharp truncation. [0.5+0.5cos(theta), theta inclusive between plus and minus pi],[0, elsewhere] Dictionary of Exploration Geophysics POSC epicentre 2.1 current
Hamming function A function used to shape the cutoff of a window or gate in data processing to avoid the undesirable effects of sharp truncation. [0.54 +0.46cos(theta), theta inclusive between plus and minus pi], [0, elsewhere] Dictionary of Exploration Geophysics POSC epicentre 2.1 current
boxcar function A rectangular window function with a value of one within the window and zero outside the window.   POSC epicentre 2.1 current
linear taper function A function used to shape the cutoff of a window or gate in data processing to avoid the undesirable effects of sharp truncation. The function tapers from a value of one to a value of zero at the boundary of the window.   POSC epicentre 2.1 current
triangle function A triangular window function with a value of one at a single point of the window tapering in a linear fashion to zero at each boundary of the window.   POSC epicentre 2.1 current
Weiner filter A causal filter which will transform an input into a desired output as nearly as possible, subject to certain constraints. Dictionary of Exploration Geophysics POSC epicentre 2.1 current
Chebychev filter A band-pass filter with a steep rolloff, characterized by a uniform ripple in the passband. Dictionary of Exploration Geophysics POSC epicentre 2.1 current

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