python之调用科大讯飞的语音合成
没注册的话可以在官网注册一下，新人注册的话语音识别这块有赠送的使用次数
科大讯飞
环境
cffi==1.12.3gevent==1.4.0greenlet==0.4.15pycparser==2.19six==1.12.0websocket==0.2.1websocket-client==0.56.0wave pyaudio //linux 下 播放pcm用的，转格式之类的，//也有其他的；如果下载MP3格式的不用下载
windows 直接pip install xxx或pip3 isntall xxx
linux 的话 自行下载pip 或 有python 3.6以及之后的配置一下即可.
我的环境
ubuntu linux 21.04 python 3.7
代码（看注解即可）
#!/bin/python3# 语音合成import websocketimport datetimeimport hashlibimport base64import hmacimport jsonfrom urllib.parse import urlencodeimport sslfrom wsgiref.handlers import format_date_timefrom datetime import datetimefrom time import mktimeimport _thread as threadimport osfrom integrationxuF import pcm2wav import waveSTATUS_FIRST_FRAME = 0 # 第一帧的标识STATUS_CONTINUE_FRAME = 1 # 中间帧标识STATUS_LAST_FRAME = 2 # 最后一帧的标识class TTS():"""语音合成 TTS :Text To Speech"""# 初始化def __init__(self, APPID, APIKey, APISecret, Text,OutFile,wavFile=None):self.APPID = APPIDself.APIKey = APIKeyself.APISecret = APISecretself.Text = Text# 公共参数(common)monArgs = {"app_id": self.APPID}self.OutFile = OutFileself.wavFile = wavFile# 业务参数(business)，更多个性化参数可在官网查看"""auestring => raw：未压缩的pcm lame：mp3 (当aue=lame时需传参sfl=1)auf string => audio/L16;rate=8000：合成8K 的音频audio/L16;rate=16000：合成16K 的音频vcn string =>发音人，可选值：请到控制台添加试用或购买发音人，添加后即显示发音人参数值"xiaoyan"这里只是部分，详细的可去官网 /doc/tts/online_tts/API.html#%E6%8E%A5%E5%8F%A3%E8%B0%83%E7%94%A8%E6%B5%81%E7%A8%8B"""self.BusinessArgs = {"aue": "lame", "sfl":1,"auf": "audio/L16;rate=16000", "vcn": "aisxping","tte": "utf8","auf":"audio/L16;rate=16000"}self.Data = {"status": 2, "text": str(base64.b64encode(self.Text.encode('utf-8')), "UTF8")}# 运行def run(self):websocket.enableTrace(False)wsUrl = self.create_url()ws = websocket.WebSocketApp(wsUrl,on_message=self.on_message, on_error=self.on_error, on_close=self.on_close)ws.on_open = self.on_openws.run_forever(sslopt={"cert_reqs": ssl.CERT_NONE})# self.towav() # 这个是 请求的文件格式 是 pcm;目的是把pcm转为wav格式的；这里我用的mp3 就没必要使用这个了print("-"*10,"运行结束","-"*10)# pcm2wavdef towav(self):"""这里是分割pcm的路径，把转换为WAV格式的放到同目录下；可自行指定路径"""if self.wavFile is None:splits = str(self.OutFile).split('/')splits.pop(-1)splits.append("demo.wav")self.wavFile = '/'.join(splits)# print("wavFile:",self.wavFile)self.pcm2wav(self.OutFile,self.wavFile)def pcm2wav(self,pcmfile,wavfile,channels=1,rate=16000):with open(pcmfile,'rb') as fp:pcmdata = fp.read()with wave.open(wavfile, 'wb') as wav:wav.setnchannels(channels)wav.setsampwidth(16 // 8)wav.setframerate(rate)# 写入wav.writeframes(pcmdata)# 生成urldef create_url(self):url = 'wss://tts-/v2/tts'# 生成RFC1123格式的时间戳now = datetime.now()date = format_date_time(mktime(now.timetuple()))# 拼接字符串signature_origin = "host: " + "ws-" + "\n"signature_origin += "date: " + date + "\n"signature_origin += "GET " + "/v2/tts " + "HTTP/1.1"# 进行hmac-sha256进行加密signature_sha = hmac.new(self.APISecret.encode('utf-8'), signature_origin.encode('utf-8'),digestmod=hashlib.sha256).digest()signature_sha = base64.b64encode(signature_sha).decode(encoding='utf-8')authorization_origin = "api_key=\"%s\", algorithm=\"%s\", headers=\"%s\", signature=\"%s\"" % (self.APIKey, "hmac-sha256", "host date request-line", signature_sha)authorization = base64.b64encode(authorization_origin.encode('utf-8')).decode(encoding='utf-8')# 将请求的鉴权参数组合为字典v = {"authorization": authorization,"date": date,"host": "ws-"}# 拼接鉴权参数，生成urlurl = url + '?' + urlencode(v)# print("date: ",date)# print("v: ",v)# 此处打印出建立连接时候的url,参考本demo的时候可取消上方打印的注释，比对相同参数时生成的url与自己代码生成的url是否一致# print('websocket url :', url)return urldef on_message(self,ws, message):try:message =json.loads(message)code = message["code"]sid = message["sid"]audio = message["data"]["audio"]audio = base64.b64decode(audio)status = message["data"]["status"]# print(message)if status == 2:print("ws is closed")ws.close()if code != 0:errMsg = message["message"]print("sid:%s call error:%s code is:%s" % (sid, errMsg, code))else:with open(self.OutFile, 'ab') as f:f.write(audio)except Exception as e:print("receive msg,but parse exception:", e)# 收到websocket错误的处理def on_error(self,ws, error):print("### error:", error)# 收到websocket关闭的处理def on_close(self,ws):print("### closed ###")# 收到websocket连接建立的处理def on_open(self,ws):def run(*args):d = {"common": monArgs,"business": self.BusinessArgs,"data": self.Data,}d = json.dumps(d)print("------>开始发送文本数据")ws.send(d)if os.path.exists(self.OutFile):os.remove(self.OutFile)thread.start_new_thread(run, ())if __name__ == "__main__":# 测试时候在此处正确填写相关信息即可运行# 那个文本中的两个句号是为了延长一下时间，不加的话最后一个字听不清out = os.getcwd() + '/python/demo.mp3'# 下面这些参数 自己到官网获取即可tts = TTS(APPID='',APISecret='',APIKey='',Text="下午的一个语音合成示例。。",OutFile=out)tts.run()
