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Python + librosa で14平米にスーベニア -広川恵一 Remix-から久川凪を救出する

Last updated at Posted at 2022-06-19

Twitterで話題の久川凪をpythonライブラリのlibrosaを使ってプロットしてみました

コード

import numpy as np
import librosa
import librosa.display
from matplotlib import pyplot as plt
from matplotlib import cm
from matplotlib import ticker


file_path = r'./souvenir.wav'
y, sr = librosa.load(file_path, sr=44100)

# スペクトログラムの生成
D = librosa.stft(y, n_fft=2048)  # STFT
S = np.abs(D)
S_db = librosa.amplitude_to_db(S, ref=np.max)  # db変換

# プロット
fig, ax = plt.subplots(dpi=300)
img = librosa.display.specshow(S_db, sr=sr, x_axis='time', y_axis='hz', ax=ax, cmap=cm.gray)

# 177.6秒から182.1秒あたりに画像が埋め込まれている
ax.set_xlim([177, 183])
ax.set_ylim([0, 22050])
ax.set_aspect((183 - 177) / (22050 - 0))  # アスペクト比を1:1に

ax.xaxis.set_major_locator(ticker.MultipleLocator(5))
ax.xaxis.set_minor_locator(ticker.MultipleLocator(1))

fig.colorbar(img, format='%+2.0f db')
fig.savefig('./souvenir.png')
fig.show() 

久川凪

souvenir.png

やったぜ。

音源を購入したい方は以下のサイトからどうぞ。

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