Use Baidu Chinese speech recognition function in unity

Here is the API class
Asr.cs

usingSystem;usingSystem.Collections;usingSystem.Collections.Generic;usingUnityengine;/// <summary>///JSON data for user resolution token/// </summary>classtokenresponse{ Public stringAccess_token =NULL;} Public classasr{ Public stringSecretkey {Get;Private Set; }  Public stringAPIKey {Get;Private Set; }  Public stringToken {Get;Private Set; }  PublicASR (stringApiKey,stringSecretkey) {APIKey=ApiKey; Secretkey=Secretkey; }     PublicIEnumerator Getaccesstoken () {varURI =string. Format ("Https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials&client_id={0}&client_ Secret={1}", APIKey, Secretkey); varwww =NewWWW (URI); yield returnwww; if(string. IsNullOrEmpty (Www.error)) {varresult = Jsonutility.fromjson<tokenresponse>(Www.text); Token=Result.access_token; Debug.Log ("Get Access_token successfully"); }        Else{debug.logerror (www.error); }    }     PublicIEnumerator recognize (byte[] Data, action<string>callback) {        varURI =string. Format ("Http://vop.baidu.com/server_api?lan=zh&cuid={0}&token={1}", Systeminfo.deviceuniqueidentifier, Token); varheaders =Newdictionary<string,string> {{"Content-type","audio/pcm;rate=16000" } }; varwww =NewWWW (URI, data, headers); yield returnwww; if(string.            IsNullOrEmpty (Www.error)) {Debug.Log (www.text);        Callback (Www.text); }        ElseDebug.logerror (Www.error); }    /// <summary>    ///Convert Unity's AudioClip data to PCM format 16bit data/// </summary>    /// <param name= "clip" ></param>    /// <returns></returns>     Public Static byte[] ConvertAudioClipToPCM16 (audioclip clip) {varSamples =New float[Clip.samples *Clip.channels]; Clip. GetData (samples,0); varSamples_int16 =New  Short[Samples.        Length];  for(varindex =0; Index < samples. Length; index++)        {            varf =Samples[index]; Samples_int16[index]= ( Short) (f * Short.        MaxValue); }        varByteArray =New byte[Samples_int16. Length *2]; Buffer.blockcopy (Samples_int16,0, ByteArray,0, bytearray.length); returnByteArray; }}

Here is the test class

Main.cs

usingUnityengine;usingSystem.Collections;usingUnityengine.ui; Public classMain:monobehaviour { Public stringAPIKey ="";  Public stringSecretkey ="";  PublicButton Startbutton;  PublicButton Stopbutton;  PublicText DescriptionText; PrivateAudioClip _cliprecord =NewAudioClip (); PrivateASR _asr; voidStart () {_asr=NewASR (APIKey, Secretkey); Startcoroutine (_ASR.        Getaccesstoken ()); StartButton.gameObject.SetActive (true); StopButton.gameObject.SetActive (false); Descriptiontext.text="";        StartButton.onClick.AddListener (Onclickstartbutton);    StopButton.onClick.AddListener (Onclickstopbutton); }    Private voidOnclickstartbutton () {StartButton.gameObject.SetActive (false); StopButton.gameObject.SetActive (true); Descriptiontext.text="Listening ..."; _cliprecord= Microphone.start (NULL,false, -,16000); }    Private voidOnclickstopbutton () {StartButton.gameObject.SetActive (false); StopButton.gameObject.SetActive (false); Descriptiontext.text="Recognizing ..."; Microphone.end (NULL); Debug.Log ("End Record"); vardata =asr.convertaudiocliptopcm16 (_cliprecord); Startcoroutine (_ASR. Recognize (data, S={Descriptiontext.text=s; StartButton.gameObject.SetActive (true);    })); }}

Resources originate from Guanl Manic's Technology Park

Http://blog.csdn.net/zhenghongzhi6/article/details/78688571#comments

Use Baidu Chinese speech recognition function in unity