python - 如何从谷歌云存储桶读取音频文件并在datalab笔记本中使用ipd播放

Question

我想在数据实验室笔记本中播放我从谷歌云存储桶中读取的声音文件。如何做到这一点？

Answer 1

import numpy as np
import IPython.display as ipd
import librosa
import soundfile as sf
import io
from google.cloud import storage

BUCKET = 'some-bucket'

# Create a Cloud Storage client.
gcs = storage.Client()

# Get the bucket that the file will be uploaded to.
bucket = gcs.get_bucket(BUCKET)

# specify a filename
file_name = 'some_dir/some_audio.wav'

# read a blob
blob = bucket.blob(file_name)
file_as_string = blob.download_as_string()

# convert the string to bytes and then finally to audio samples as floats 
# and the audio sample rate
data, sample_rate = sf.read(io.BytesIO(file_as_string))

left_channel = data[:,0]  # I assume the left channel is column zero

# enable play button in datalab notebook
ipd.Audio(left_channel, rate=sample_rate)