1a29b95782
Added/modified few plot functions. Cleaned up simulation/plotting scripts regarding Thresh-LP.
152 lines
5.3 KiB
Python
152 lines
5.3 KiB
Python
import numpy as np
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import matplotlib.pyplot as plt
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from thunderhopper.modeltools import load_data, save_data
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from thunderhopper.filetools import search_files, crop_paths
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from thunderhopper.filters import sosfilter
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from thunderhopper.filtertools import find_kern_specs
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from thunderhopper.model import convolve_kernels
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from IPython import embed
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# GENERAL SETTINGS:
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target = ['Omocestus_rufipes', '*'][0]
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data_paths = search_files(target, dir='../data/processed/')
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noise_path = '../data/processed/white_noise_sd-1.npz'
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save_path = '../data/inv/thresh_lp/'
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# ANALYSIS SETTINGS:
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add_noise = True
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save_snippets = add_noise and True
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plot_results = False
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example_scales = np.array([0, 1, 10, 30, 100])
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scales = np.geomspace(0.01, 10000, 100)
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scales = np.unique(np.concatenate((scales, example_scales)))
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thresh_rel = np.array([0.5, 1, 3])
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kern_specs = np.array([
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[1, 0.008],
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[2, 0.004],
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[3, 0.002],
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])
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# PREPARATION:
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pure_noise = np.load(noise_path)['inv']
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# EXECUTION:
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for data_path, name in zip(data_paths, crop_paths(data_paths)):
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print(f'Processing {name}')
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save_name = save_path + name
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# Get adapted envelope (prior to convolution):
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data, config = load_data(data_path, files='inv')
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song, rate = data['inv'], data['inv_rate']
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# Get song segment to be analyzed:
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time = np.arange(song.shape[0]) / rate
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start, end = data['songs_0'].ravel()
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segment = (time >= start) & (time <= end)
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# Reduce to kernel subset:
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kern_inds = find_kern_specs(config['k_specs'], kerns=kern_specs)
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config['kernels'] = config['kernels'][:, kern_inds]
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config['k_specs'] = config['k_specs'][kern_inds, :]
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config['k_props'] = [config['k_props'][i] for i in kern_inds]
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# Normalize song component:
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song /= song[segment].std()
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# Get normalized noise component:
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noise = pure_noise[:song.shape[0]]
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noise /= noise[segment].std()
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# Define kernel-specific threshold values based on pure-noise response SD:
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ref_conv = convolve_kernels(noise, config['kernels'], config['k_specs'])
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thresh_abs = ref_conv[segment, :].std(axis=0, keepdims=True) * thresh_rel[:, None]
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# Prepare measure storage:
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shape = (scales.size, kern_specs.shape[0], thresh_rel.size)
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measure_feat = np.zeros(shape, dtype=float)
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if save_snippets:
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# Prepare snippet storage:
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snip_inv = np.zeros((song.size, example_scales.size), dtype=float)
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shape = (song.size, kern_specs.shape[0], example_scales.size, thresh_rel.size)
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snip_conv = np.zeros(shape[:-1], dtype=float)
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snip_bi = np.zeros(shape, dtype=float)
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snip_feat = np.zeros(shape, dtype=float)
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# Execute piecewise:
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for i, scale in enumerate(scales):
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print('Simulating scale', scale)
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# Rescale song component:
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scaled_song = song * scale
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if add_noise:
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# Add noise:
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scaled_song += noise
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# Process mixture:
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scaled_conv = convolve_kernels(scaled_song, config['kernels'], config['k_specs'])
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# Log threshold-independent snippet data:
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if save_snippets and scale in example_scales:
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save_ind = np.nonzero(example_scales == scale)[0][0]
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snip_inv[:, save_ind] = scaled_song
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snip_conv[:, :, save_ind] = scaled_conv
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# Execute piecewise again:
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for j, thresholds in enumerate(thresh_abs):
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# Process mixture further:
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scaled_bi = (scaled_conv > thresholds).astype(float)
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scaled_feat = sosfilter(scaled_bi, rate, config['feat_fcut'], 'lp',
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padtype='fixed', padlen=config['padlen'])
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# Log threshold-dependent snippet data:
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if save_snippets and scale in example_scales:
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snip_bi[:, :, save_ind, j] = scaled_bi
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snip_feat[:, :, save_ind, j] = scaled_feat
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# Log intensity measure:
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measure_feat[i, :, j] = scaled_feat[segment, :].mean(axis=0)
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# Overview plot:
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if plot_results:
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fig, axes = plt.subplots(thresh_rel.size, kern_specs.shape[0],
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figsize=(16, 9), layout='constrained',
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sharex=True, sharey=True, squeeze=True)
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axes[0, 0].set_xscale('symlog', linthresh=scales[scales>0].min(),
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linscale=0.25)
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axes[0, 0].set_ylim(0, 1)
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for i, thresh in enumerate(thresh_rel):
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for j, kernel in enumerate(kern_specs):
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ax = axes[i, j]
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ax.plot(scales, measure_feat[:, j, i], 'k')
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if i == 0:
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ax.set_title(f'Kernel {kernel}')
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if j == 0:
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ax.set_ylabel(f'{thresh} * SD')
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plt.show()
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# Save analysis results:
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if save_path is not None:
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data = dict(
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scales=scales,
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example_scales=example_scales,
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measure_feat=measure_feat,
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thresh_rel=thresh_rel,
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thresh_abs=thresh_abs,
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)
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if save_snippets:
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data.update(dict(
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snip_inv=snip_inv,
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snip_conv=snip_conv,
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snip_bi=snip_bi,
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snip_feat=snip_feat,
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))
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if add_noise:
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save_name += '_noise'
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else:
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save_name += '_pure'
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save_data(save_name, data, config, overwrite=True)
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print('Done.')
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embed()
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