clear;clc
%?Doc:
%?https://github.com/Baidu-AIP/speech-demo
%?https://ai.baidu.com/ai-doc/SPEECH/Vk38lxily
%?code:?
%?client_id?=?‘your?id‘;
%?client_secret?=?‘your?secret‘;
Host?=?webread（?‘https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials&client_id=kVcnfD9iW2XVZSMaLMrtLYIz&client_secret=O9o1O213UgG5LFn0bDGNtoRN3VWl2du6‘?）;
Access_Token?=?Host.access_token;
request_url?=?‘http://vop.baidu.com/server_api‘;

[?Data?Freq]?=?audioread（‘Audio_test.aac‘）;
newFreq?=?16000;
[?P?Q?]?=?rat（?newFreq/Freq?）;
Data?=?resample（?Data?P?Q?）;

wavFilename?=?‘WavFile.wav‘;
audiowrite（wavFilename?Data?newFreq）;

[base64string?base64len]=?base64file（‘WavFile.wav‘）;
options?=?weboptions（‘RequestMethod‘?‘post‘‘HeaderFields‘{?‘Content-Type‘‘a(chǎn)pplication/json‘}）