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# Create a random population of genes, with each genotype having 2 elements. | |
population_size = 200 | |
population = np.random.standard_normal((population_size, 2)) | |
# Some objective measure of the genes performance or fitness. This is dependant | |
# on the environment or optimsation problem that you have, and I do not define | |
# the function in this snippet. | |
fitnesses = evaluate_fitness(population) | |
# Sort the list of fitnesses and create a probability distribution based on |
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from sklearn.manifold import TSNE | |
from sklearn.preprocessing import MinMaxScaler | |
def get_scaled_tsne_embeddings(features, perplexity, iteration): | |
embedding = TSNE(n_components=2, | |
perplexity=perplexity, | |
n_iter=iteration).fit_transform(features) | |
scaler = MinMaxScaler() | |
scaler.fit(embedding) |
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import umap | |
from sklearn.preprocessing import MinMaxScaler | |
def get_scaled_umap_embeddings(features, neighbour, distance): | |
embedding = umap.UMAP(n_neighbors=neighbour, | |
min_dist=distance, | |
metric='correlation').fit_transform(features) | |
scaler = MinMaxScaler() |
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from sklearn.decomposition import PCA | |
from sklearn.preprocessing import MinMaxScaler | |
def get_pca(features): | |
pca = PCA(n_components=2) | |
transformed = pca.fit(features).transform(features) | |
scaler = MinMaxScaler() | |
scaler.fit(transformed) | |
return scaler.transform(transformed) |
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import numpy as np | |
# Create some random MFCC shaped features as a sequence of 10 values | |
feature_sequence = np.random.random((10, 13)) | |
# Get the standard deviation | |
stddev_features = np.std(feature_sequence, axis=0) | |
# Get the mean | |
mean_features = np.mean(feature_sequence, axis=0) |
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ls -lah ./audio_dataset/ | |
... | |
-rw-rw-r-- 1 tollie tollie 3.8M Jun 28 2014 HAL9K - Long Sustained Note.wav | |
-rw-rw-r-- 1 tollie tollie 2.7M Jul 2 2014 HAL9K - Lost Soul.wav | |
-rw-rw-r-- 1 tollie tollie 7.5M Jun 29 2014 HAL9K - Low Long Tail.wav | |
-rw-rw-r-- 1 tollie tollie 3.8M Jun 28 2014 HAL9K - Low Short.wav | |
-rw-rw-r-- 1 tollie tollie 4.6M Jun 28 2014 HAL9K - Low Thump.wav | |
-rw-rw-r-- 1 tollie tollie 4.6M Jul 2 2014 HAL9K - Lute 1.wav | |
-rw-rw-r-- 1 tollie tollie 7.7M Jul 2 2014 HAL9K - Lute 2.wav |
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import librosa | |
sample_rate = 44100 | |
mfcc_size = 13 | |
# Load the audio | |
pcm_data, _ = librosa.load(file_path) | |
# Compute a vector of n * 13 mfccs | |
mfccs = librosa.feature.mfcc(pcm_data, |
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from magenta.models.nsynth import utils | |
from magenta.models.nsynth.wavenet import fastgen | |
def wavenet_encode(file_path): | |
# Load the model weights. | |
checkpoint_path = './wavenet-ckpt/model.ckpt-200000' | |
# Load and downsample the audio. | |
neural_sample_rate = 16000 |