我在Linux用python调用RESTAPI的代码，能够成功查询，但是识别率极低，说什么都是“哈哈”，“嗯”，我播放录音文件听的还是挺清晰的，不知道为啥，代码如下：

#encoding=utf-8

import os

import wave

import urllib, urllib2, pycurl

import base64

import json

## get access token by api key & secret key

def get_token():

    apiKey = "xxx"

    secretKey = "xxx"

    auth_url = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_cre$

    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):

    os.system('sudo arecord -D "plughw:1,0" -d 5  tts.pcm')

    os.system('play tts.pcm')

    fp = wave.open('tts.pcm', 'rb')

    nf = fp.getnframes()

    f_len = nf * 2

    audio_data = fp.readframes(nf)

    cuid = "xxxxxxxxxx" #my xiaomi phone MAC

    srv_url = 'http://vop.baidu.com/server_api' + '?cuid=' + cuid + '&token=' +$

    http_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 dict

    c.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 val

if __name__ == "__main__":

    token = get_token()

    use_cloud(token)

    os.system('sudo rm tts.pcm')