python使用百度语音识别API注意事项
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python使用百度语音识别API注意事项
小編覺得挺不錯的,現在分享給大家,幫大家做個參考.
代碼如下:
# -*- coding:utf-8 -*- #http://blog.csdn.net/happen23/article/details/45821697 #百度語音識別API的使用樣例(python實現) #encoding=utf-8import wave import urllib, urllib2, pycurl import base64 import json ## get access token by api key & secret keydef get_token():apiKey = "xjlSpsvUgGF8a9ltNOtREoTr"secretKey = "a95ca71b81854b526e7eb04ae8f51d23"auth_url = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials&client_id=" + apiKey + "&client_secret=" + secretKey;res = urllib2.urlopen(auth_url)json_data = res.read()return json.loads(json_data)['access_token']def dump_res(buf):print buf## post audio to server def use_cloud(token):fp = wave.open('8k.wav', 'rb')nf = fp.getnframes()f_len = nf * 2audio_data = fp.readframes(nf)cuid = "xxxxxxxxxx" #my xiaomi phone MACsrv_url = 'http://vop.baidu.com/server_api' + '?cuid=' + cuid + '&token=' + tokenhttp_header = ['Content-Type: audio/pcm; rate=8000','Content-Length: %d' % f_len]c = pycurl.Curl()c.setopt(pycurl.URL, str(srv_url)) #curl doesn't support unicode#c.setopt(c.RETURNTRANSFER, 1)c.setopt(c.HTTPHEADER, http_header) #must be list, not dictc.setopt(c.POST, 1)c.setopt(c.CONNECTTIMEOUT, 30)c.setopt(c.TIMEOUT, 30)c.setopt(c.WRITEFUNCTION, dump_res)c.setopt(c.POSTFIELDS, audio_data)c.setopt(c.POSTFIELDSIZE, f_len)c.perform() #pycurl.perform() has no return valif __name__ == "__main__":token = get_token()use_cloud(token)
http://yuyin.baidu.com/docs/asr/54
在上面這個鏈接的頁面中,往下拖,可以得到下載鏈接如下:
http://speech-doc.gz.bcebos.com/rest-api-asr/public_audio/public.zip
然后運行結果:
{"corpus_no":"6485972281376050071","err_msg":"success.","err_no":0,"result":["北京科技館,"],"sn":"651708407021510133099"}
注意事項:
百度的語音識別和語音合成用的是相同的
appid、API key和Secret Key,所以使用相同的token即可
獲取以上三個字段的教程:
http://jingyan.baidu.com/article/f3e34a12df0cddf5eb65359f.html
后記:
下面的代碼可以運行任意自己錄制的音頻文件,注意,運行前必須apt-get install ffmpeg
另外,rate改成了16000,不然會識別不準,不過,也沒有經過大量測試,不知道識別準確的情況還會不會出現。
# -*- coding:utf-8 -*- #http://blog.csdn.net/happen23/article/details/45821697 #百度語音識別API的使用樣例(python實現) #encoding=utf-8import wave import urllib, urllib2, pycurl import base64 import subprocess import json ## get access token by api key & secret keydef get_token():apiKey = "xjlSpsvUgGF8a9ltNOtREoTr"secretKey = "a95ca71b81854b526e7eb04ae8f51d23"auth_url = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials&client_id=" + apiKey + "&client_secret=" + secretKey;res = urllib2.urlopen(auth_url)json_data = res.read()return json.loads(json_data)['access_token']def dump_res(buf):print buf## post audio to server def use_cloud(token):subprocess.call(['ffmpeg', '-i', 'tian.mp3', 'tian.wav'])#這句代碼的意思是在終端中執行[]中的命令。所以執行的前提是apt-get install ffmpegfp = wave.open('tian.wav', 'rb')nf = fp.getnframes()f_len = nf * 2audio_data = fp.readframes(nf)cuid = "xxxxxxxxxx" #my xiaomi phone MACsrv_url = 'http://vop.baidu.com/server_api' + '?cuid=' + cuid + '&token=' + tokenhttp_header = ['Content-Type: audio/pcm; rate=16000','Content-Length: %d' % f_len]c = pycurl.Curl()c.setopt(pycurl.URL, str(srv_url)) #curl doesn't support unicode#c.setopt(c.RETURNTRANSFER, 1)c.setopt(c.HTTPHEADER, http_header) #must be list, not dictc.setopt(c.POST, 1)c.setopt(c.CONNECTTIMEOUT, 30)c.setopt(c.TIMEOUT, 30)c.setopt(c.WRITEFUNCTION, dump_res)c.setopt(c.POSTFIELDS, audio_data)c.setopt(c.POSTFIELDSIZE, f_len)c.perform() #pycurl.perform() has no return valif __name__ == "__main__":token = get_token()use_cloud(token)所謂的離線資源下載,其實仍然是本地向服務器請求,效率上是無法提高的。
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