python调用百度语音识别 api

#!/usr/bin/env python

# -*- coding: utf-8 -*-

########################################################################

# 

# Copyright (c) 2017 aibot.me, Inc. All Rights Reserved

# 

########################################################################

 

"""

File: util_voice.py

Author: darrenwang(darrenwang@aibot.me)

Date: 2017/03/24 11:29:50

Brief: 

"""

import sys

import json

import time

import base64

import urllib

import urllib2

import requests

class BaiduRest:

    def __init__(self, cu_id, api_key, api_secert):

        self.token_url = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials&client_id=%s&client_secret=%s"

        self.getvoice_url = "http://tsn.baidu.com/text2audio?tex=%s&lan=zh&cuid=%s&ctp=1&tok=%s"

        self.upvoice_url = 'http://vop.baidu.com/server_api'

        self.cu_id = cu_id

        self.get_token(api_key, api_secert)

        return

    

    

    def get_token(self, api_key, api_secert):

        token_url = self.token_url % (api_key,api_secert)

        r_str = urllib2.urlopen(token_url).read()

        token_data = json.loads(r_str)

        self.token_str = token_data['access_token']

        return True

    

    #语音合成

    def text2audio(self, text, filename):

        get_url = self.getvoice_url % (urllib2.quote(text), self.cu_id, self.token_str)

        voice_data = urllib2.urlopen(get_url).read()

        voice_fp = open(filename,'wb+')

        voice_fp.write(voice_data)

        voice_fp.close()

        return True

    

    

    ##语音识别

    def audio2text(self, filename):

        data = {}

        data['format'] = 'wav'

        data['rate'] = 8000

        data['channel'] = 1

        data['cuid'] = self.cu_id

        data['token'] = self.token_str

        wav_fp = open(filename,'rb')

        voice_data = wav_fp.read()

        data['len'] = len(voice_data)

        #data['speech'] = base64.b64encode(voice_data).decode('utf-8')

        data['speech'] = base64.b64encode(voice_data).replace('\n', '')

        #post_data = json.dumps(data)

        result = requests.post(self.upvoice_url, json=data, headers={'Content-Type': 'application/json'})

        data_result = result.json()

        print data_result

        return data_result['result'][0]

def test_voice():

    api_key = "SrhYKqzl3SE1URnAEuZ0FKdT" 

    api_secert = "hGqeCkaMPb0ELMqtRGc2VjWdmjo7T89d"

    bdr = BaiduRest("test_python", api_key, api_secert)

    

    #生成

    start = time.time()

    bdr.text2audio("你好啊", "out.wav")

    using = time.time() - start

    print using

    #识别

    start = time.time()

    #result = bdr.audio2text("test.wav")

    #result = bdr.audio2text("weather.pcm")

    using = time.time() - start

    print using, result

    return True

if __name__ == "__main__":

    test_voice()