Question

我正在使用Amazon Polly进行文本语音转换，但是我不想将转换后的文件保存到PC上以进行检索。相反，我想将其作为流播放。

我使用了playsound，但它不能用于返回的变量。

client = boto3.client('polly')

output = client.synthesize_speech (
  Text = "Some random text I want to convert", OutputFormat = "mp3", VoiceId = 'Aditi'
)

print(output['AudioStream'])

file = open('speech.mp3', 'wb')
file.write(output['AudioStream'].read())
file.close()

Answer 1

您可以使用pydub将mp3流直接加载到AudioSegment中。

from pydub import AudioSegment

sound = AudioSegment.from_mp3(output['AudioStream'])

Answer 2

如果您不想将文件保存在本地，您可以使用 pyaudio 直接播放流。根据您的用例，您可以读取具有定义缓冲区大小的流块，或者只是读取整个流并播放它：

import sys
from contextlib import closing

import boto3
import pyaudio
from botocore.exceptions import BotoCoreError, ClientError


session = boto3.Session(aws_access_key_id=ACCESS_KEY, aws_secret_access_key=SECRET_KEY)
polly = session.client("polly")

SAMPLE_RATE = 16000
READ_CHUNK = 4096
CHANNELS = 1
BYTES_PER_SAMPLE = 2

try:
    response = polly.synthesize_speech(Text="Hello world!",
                                       VoiceId="Joanna",
                                       LanguageCode="en-US",
                                       OutputFormat="pcm",
                                       SampleRate=str(SAMPLE_RATE))

except (BotoCoreError, ClientError) as error:
    print(error)
    sys.exit(-1)

p = pyaudio.PyAudio()
stream = p.open(format=p.get_format_from_width(BYTES_PER_SAMPLE),
                channels=CHANNELS,
                rate=SAMPLE_RATE,
                output=True)

with closing(response["AudioStream"]) as polly_stream:
    while True:
        data = polly_stream.read(READ_CHUNK)
        if data is None:
            break

        stream.write(data)

stream.stop_stream()
stream.close()

p.terminate()

如何从Amazon Polly文本到语音播放.mp3文件而不保存文件

2 个答案: