音訊資料集

作者: Moto Hira

torchaudio 提供了對常用公開資料集的便捷訪問。有關可用資料集的列表，請參閱官方文件。

import torch
import torchaudio

print(torch.__version__)
print(torchaudio.__version__)

2.7.0
2.7.0

import os

import IPython

import matplotlib.pyplot as plt


_SAMPLE_DIR = "_assets"
YESNO_DATASET_PATH = os.path.join(_SAMPLE_DIR, "yes_no")
os.makedirs(YESNO_DATASET_PATH, exist_ok=True)


def plot_specgram(waveform, sample_rate, title="Spectrogram"):
    waveform = waveform.numpy()

    figure, ax = plt.subplots()
    ax.specgram(waveform[0], Fs=sample_rate)
    figure.suptitle(title)
    figure.tight_layout()

此處，我們將展示如何使用 torchaudio.datasets.YESNO 資料集。

dataset = torchaudio.datasets.YESNO(YESNO_DATASET_PATH, download=True)

  0%|          | 0.00/4.49M [00:00<?, ?B/s]
  3%|2         | 128k/4.49M [00:00<00:08, 546kB/s]
 11%|#1        | 512k/4.49M [00:00<00:02, 1.47MB/s]
 36%|###6      | 1.62M/4.49M [00:00<00:00, 3.89MB/s]
100%|##########| 4.49M/4.49M [00:00<00:00, 7.28MB/s]

i = 1
waveform, sample_rate, label = dataset[i]
plot_specgram(waveform, sample_rate, title=f"Sample {i}: {label}")
IPython.display.Audio(waveform, rate=sample_rate)

i = 3
waveform, sample_rate, label = dataset[i]
plot_specgram(waveform, sample_rate, title=f"Sample {i}: {label}")
IPython.display.Audio(waveform, rate=sample_rate)

i = 5
waveform, sample_rate, label = dataset[i]
plot_specgram(waveform, sample_rate, title=f"Sample {i}: {label}")
IPython.display.Audio(waveform, rate=sample_rate)