pygwb.spectral.coarse_grain_spectrogram
- pygwb.spectral.coarse_grain_spectrogram(spectrogram, delta_t=None, delta_f=None, time_method='naive', frequency_method='full')[source]
Coarsen a spectrogram in time and/or frequency, e.g., Welch averaging / coarse-graining.
- The coarsening methods are either:
naive: this is equivalent to a Welch average
full: the full coarse-grain method
running_mean: computing the running mean of the array.
- Parameters:
spectrogram (
gwpy.spectrogram.Spectrogram) – Spectrogram object to be coarsened.delta_t (
float, optional.) – Output time spacing. Default is None.delta_f (
float, optional) – Output frequency spacing. Default is None.time_method (
str, optional) – Should be one of the coarsening methods listed above. Default is “naive”.frequency_method (
str, optional.) – Should be one of the coarsening methods listed above. Default is “full”.
- Returns:
- output:
gwpy.spectrogram.Spectrogram The coarse-grained spectrogram.
- output: