如何从谷歌云存储桶中读取音频文件，并在datalab笔记本中玩ipd

Question

我想在datalab笔记本中播放一个声音文件，该文件是我从谷歌云存储桶中读取的。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)