python基于百度api实现语音识别

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Date    : 2018-12-02 19:04:55
import wave
import requests
import time
import base64
from pyaudio import PyAudio, paInt16
import webbrowser

framerate = 16000  # 采样率
num_samples = 2000  # 采样点
channels = 1  # 声道
sampwidth = 2  # 采样宽度2bytes
FILEPATH = 'speech.wav'

base_url = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials&client_id=%s&client_secret=%s"
APIKey = "你自己的APIKey"
SecretKey = "你自己的SecretKey"

HOST = base_url % (APIKey, SecretKey)


def getToken(host):
    res = requests.post(host)
    return res.json()['access_token']


def save_wave_file(filepath, data):
    wf = wave.open(filepath, 'wb')
    wf.setnchannels(channels)
    wf.setsampwidth(sampwidth)
    wf.setframerate(framerate)
    wf.writeframes(b''.join(data))
    wf.close()


def my_record():
    pa = PyAudio()
    stream = pa.open(format=paInt16, channels=channels,
                     rate=framerate, input=True, frames_per_buffer=num_samples)
    my_buf = []
    # count = 0
    t = time.time()
    print('正在录音...')

    while time.time() < t + 4:  # 秒
        string_audio_data = stream.read(num_samples)
        my_buf.append(string_audio_data)
    print('录音结束.')
    save_wave_file(FILEPATH, my_buf)
    stream.close()


def get_audio(file):
    with open(file, 'rb') as f:
        data = f.read()
    return data


def speech2text(speech_data, token, dev_pid=1537):
    FORMAT = 'wav'
    RATE = '16000'
    CHANNEL = 1
    CUID = '*******'
    SPEECH = base64.b64encode(speech_data).decode('utf-8')

    data = {
        'format': FORMAT,
        'rate': RATE,
        'channel': CHANNEL,
        'cuid': CUID,
        'len': len(speech_data),
        'speech': SPEECH,
        'token': token,
        'dev_pid': dev_pid
    }
    url = 'https://vop.baidu.com/server_api'
    headers = {'Content-Type': 'application/json'}
    # r=requests.post(url,data=json.dumps(data),headers=headers)
    print('正在识别...')
    r = requests.post(url, json=data, headers=headers)
    Result = r.json()
    if 'result' in Result:
        return Result['result'][0]
    else:
        return Result


def openbrowser(text):
    maps = {
        '百度': ['百度', 'baidu'],
        '腾讯': ['腾讯', 'tengxun'],
        '网易': ['网易', 'wangyi']

    }
    if text in maps['百度']:
         webbrowser.open_new_tab('https://www.baidu.com')
    elif text in maps['腾讯']:
        webbrowser.open_new_tab('https://www.qq.com')
    elif text in maps['网易']:
        webbrowser.open_new_tab('https://www.163.com/')
    else:
        webbrowser.open_new_tab('https://www.baidu.com/s?wd=%s' % text)


if __name__ == '__main__':
    flag = 'y'
    while flag.lower() == 'y':
        print('请输入数字选择语言：')
        devpid = input('1536：普通话(简单英文),1537:普通话(有标点),1737:英语,1637:粤语,1837:四川话\n')
        my_record()
        TOKEN = getToken(HOST)
        speech = get_audio(FILEPATH)
        result = speech2text(speech, TOKEN, int(devpid))
        print(result)
        # if type(result) == str:
            # openbrowser(result.strip('，'))
        flag = input('Continue?(y/n):')

如果控制台报错：

{'err_msg': 'request pv too much', 'err_no': 3305, 'sn': '200085910701658737

百度云账号登录进入语音识别->概览：领取免费语音识别次数就OK了

转载路径找不到了.....