材料：树莓派3b，usb音响，蓝牙模块，usb麦克风
注意：尽量用自己的API
由于时间久远，写的一些代码可能已经不记得了
功能：打造自己的天猫精灵，百度的语音识别和语音合成
难点：编码与解码问题，可以多百度百度
运行环境：树莓派3b,官方推荐的RaspberryPi这个版本的系统，代码全部运行在python2.7下
程序：
# coding:utf-8
import requests
import json
import base64
import wave
from pydub import AudioSegment ###需要安装pydub、ffmpeg
import io
import os
import serial
import RPi.GPIO as GPIO
import urllib2
import urllib
import time
import datetime
import re
import hashlib
import struct
import sys
#ser = serial.Serial("/dev/rfcomm0",9600)
baidu_server = "https://openapi.baidu.com/oauth/2.0/token?"
grant_type = "client_credentials"
client_id = "WUPlWzkwF5KbG1typ8EOGglh"
client_secret = "ZAs8igGeEOF2plKP9kGmIXgXKeeXdoGN" #填写Secret Key
#合成请求token的URL
url = baidu_server+"grant_type="+grant_type+"&client_id="+client_id+"&client_secret="+client_secret
#获取token
res = urllib2.urlopen(url).read()
data = json.loads(res)
token = data["access_token"]
#print token
GPIO_PIN = 24
GPIO.setmode(GPIO.BCM)
#GPIO.setup(GPIO_PIN, GPIO.IN)
GPIO.setup(GPIO_PIN, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
class BaiduRest:
def __init__(self, cu_id, api_key, api_secert):
# token认证的url
self.token_url = "https://openapi.baidu.com/oauth/2.0/token"
# 语音合成的resturl
self.getvoice_url = "http://tsn.baidu.com/text2audio"
# 语音识别的resturl
self.upvoice_url = 'http://vop.baidu.com/server_api'
self.cu_id = cu_id
self.getToken(api_key, api_secert)
return
def getToken(self, api_key, api_secert):
# 1.获取token
data={'grant_type':'client_credentials','client_id':api_key,'client_secret':api_secert}
r=requests.post(self.token_url,data=data)
Token=json.loads(r.text)
self.token_str = Token['access_token']
def getVoice(self, text, filename): #语音合成
# 2. 向Rest接口提交数据
data={'tex':text,'lan':'zh','cuid':self.cu_id,'ctp':1,'tok':self.token_str}
#data={'tex':text,'lan':'en','cuid':self.cu_id,'ctp':1,'tok':self.token_str}
r=requests.post(self.getvoice_url,data=data,stream=True)
voice_fp = open(filename,'wb')
voice_fp.write(r.raw.read())
# for chunk in r.iter_content(chunk_size=1024):
# voice_fp.write(chunk)
voice_fp.close()
def ConvertToWav(self,filename,wavfilename): #wav 转 mp3
#先从本地获取mp3的bytestring作为数据样本
fp=open("out.mp3",'rb')
data=fp.read()
fp.close()
#主要部分
aud=io.BytesIO(data)
sound=AudioSegment.from_file(aud,format='mp3')
raw_data = sound._data
#写入到文件，验证结果是否正确。
l=len(raw_data)
f=wave.open(wavfilename,'wb')
f.setnchannels(1)
f.setsampwidth(2)
f.setframerate(16000)
f.setnframes(l)
f.writeframes(raw_data)
f.close()
return wavfilename
while 1:
print ('等待触发：')
if(GPIO.input(GPIO_PIN) == 1):
print ('正在录音')
os.system('arecord -d 4 -r 8000 -c 1 -t wav -f S16_LE -D plughw:1,0 ddd.wav')
#设置音频属性，根据百度的要求，采样率必须为8000，压缩格式支持pcm（不压缩）、wav、opus、speex、amr
VOICE_RATE = 8000
WAVE_FILE = "ddd.wav" #音频文件的路径
USER_ID = "zhp-fw" #用于标识的ID，可以随意设置
WAVE_TYPE = "wav"
print ('录音结束,正在识别')
#打开音频文件，并进行编码
f = open(WAVE_FILE, "r")
speech = base64.b64encode(f.read())
size = os.path.getsize(WAVE_FILE)
update = json.dumps({"format":WAVE_TYPE, "rate":VOICE_RATE, 'channel':1,'cuid':USER_ID,'token':token,'speech':speech,'len':size})
headers = { 'Content-Type' : 'application/json' }
url = "http://vop.baidu.com/server_api"
req = urllib2.Request(url, update, headers)
r = urllib2.urlopen(req)
#语音识别
t = r.read()
result = json.loads(t)
#print result
if result['err_msg']=='success.':
word = result['result'][0].encode('utf-8')
#word = result['result'].encode('utf-8')
if word!='':
#if word[len(word)-3:len(word)]==',':
#print word[0:len(word)-3]
#else:
#串口发送
t1 = word
t2 = t1.decode("utf-8") #转换成 unicode 编码
#print(t2,type(t2))
t3 = t2.encode("gbk") #解码成 gbk 中文
#print(t3,type(t3))
t4 = t1[:-1]
t5 = t4[:-1]
t6 = t3[:-1]
t7 = t6[:-1]
#s = ser.write(t7)
#s8 = ser.write('\r\n')
#ser.close()
print t5
else:
print "音频文件不存在或格式错误"
else:
print "错误"
#串口发送
'''
t1 = word
t2 = t1.decode("utf-8") #转换成 unicode 编码
#print(t2,type(t2))
t3 = t2.encode("gbk") #解码成 gbk 中文
#print(t3,type(t3))
t4 = t1[:-1]
t5 = t4[:-1]
s = ser.write(t5)
s = ser.write('\r\n')
#ser.close()
'''
#s = ser.write("word sys")
#s = ser.write('\r\n')
#图灵
print('稍等，正在回答你的问题：')
time.sleep(1)
'''
def getHtml(url):
page = urllib.urlopen(url)
html = page.read()
return html
key = '4e348190e92547fe85efc3fb137345e7'
api = 'http://www.tuling123.com/openapi/api?key=' + key + '&info='
# info = raw_input('我: ')
request = api + word
response = getHtml(request)
dic_json = json.loads(response)
print '答: '.decode('utf-8') + dic_json['text']
'''
reload(sys)
sys.setdefaultencoding('utf-8')
API_KEY_tuling = '4e348190e92547fe85efc3fb137345e7'
raw_TULINURL = "http://www.tuling123.com/openapi/api?key=%s&info=" % API_KEY_tuling
def result():
for i in range(1,100):
#queryStr = raw_input("我:".decode('utf-8'))
queryStr = word
TULINURL = "%s%s" % (raw_TULINURL,urllib2.quote(queryStr))
req = urllib2.Request(url=TULINURL)
result = urllib2.urlopen(req).read()
hjson=json.loads(result)
length=len(hjson.keys())
content=hjson['text']
if length==3:
#return 'robots:' +content+hjson['url']
return content+hjson['url']
elif length==2:
#return 'robots:' +content
return content
#print "你好，请输入内容:".decode('utf-8')
contents=result()
print contents
#百度语音合成
api_key = "WUPlWzkwF5KbG1typ8EOGglh"
api_secert = "ZAs8igGeEOF2plKP9kGmIXgXKeeXdoGN"
# 初始化
bdr = BaiduRest("test_python", api_key, api_secert)
# 将字符串语音合成并保存为out.mp3
#bdr.getVoice("student", "out.mp3")
bdr.getVoice(contents, "out.mp3")
# 识别test.wav语音内容并显示
#print(bdr.getText(bdr.ConvertToWav("out.mp3","test.wav")))
os.system('mplayer out.mp3')