Unity 声音处理 之 语音识别

音量检测

检测当前麦克风的输入音量

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class NewBehaviourScript2 : MonoBehaviour
{
     private static int VOLUME_DATA_LENGTH = ;    //录制的声音长度

    public float volume;        //音量

    public Text text;

    public Slider slider;

    private AudioClip mMicrophoneRecode;  //录制的音频
    private string mDeviceName;           //设备名称

    public int xishu=;
    private const int frequency = ; //码率
    private const int lengthSec = ;   //录制时长

    // Use this for initialization
    void Start () {
        //获取设备名称
        mDeviceName = Microphone.devices[];

        //录制一段音频
        mMicrophoneRecode = Microphone.Start(mDeviceName, true, lengthSec, frequency);
    }

    // Update is called once per frame
    void Update () {
        volume = GetMaxVolume();
        volume*=xishu;
        slider.value=Mathf.Lerp(slider.value,volume/,0.1f);
        text.text=volume.ToString();
    }

    /// <summary>
    /// 获取最大的音量
    /// </summary>
    ///
    /// <returns>
    /// 音量大小
    /// </returns>
    private float GetMaxVolume()
    {
        float maxVolume = 0f;

        //用于储存一段时间内的音频信息
        float[] volumeData = new float[VOLUME_DATA_LENGTH];

        int offset;
        //获取录制的音频的开头位置
        offset = Microphone.GetPosition(mDeviceName) - VOLUME_DATA_LENGTH + ;

        if(offset < )
        {
            return 0f;
        }

        //获取数据
        mMicrophoneRecode.GetData(volumeData, offset);

        //解析数据
        for(int i = ;i < VOLUME_DATA_LENGTH; i++)
        {
            float tempVolume = volumeData[i];
            if(tempVolume > maxVolume)
            {
                maxVolume = tempVolume;
            }
        }

        return maxVolume;
    }
}

关键字识别

此处利用win10自带的识别

记得引入

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.Windows.Speech;//引入命名空间  利用
 using SpeechLib;
 public class NewBehaviourScript1 : MonoBehaviour
 {
     // 短语识别器
     private PhraseRecognizer m_PhraseRecognizer;
     // 关键字

     public string[] keywords;

     public GameObject xiangdu;

     // 可信度
     public ConfidenceLevel m_confidenceLevel = ConfidenceLevel.Medium;
     // Use this for initialization
     void Start ()
     {

         //创建一个识别器
         m_PhraseRecognizer = new KeywordRecognizer (keywords, m_confidenceLevel);
         //通过注册监听的方法
         m_PhraseRecognizer.OnPhraseRecognized += M_PhraseRecognizer_OnPhraseRecognized;
         //开启识别器
         m_PhraseRecognizer.Start ();
     }

     // 当识别到关键字时，会调用这个方法

     private void M_PhraseRecognizer_OnPhraseRecognized (PhraseRecognizedEventArgs args)
     {
         print (args.text);
         if (args.text.Equals("小爱"))
         {
             SpVoice v = new SpVoice();
             v.Voice = v.GetVoices(string.Empty, string.Empty).Item();
             v.Speak("我在");
         }

         if (args.text.Equals("帮我倒杯水"))
         {
             SpVoice v = new SpVoice();
             v.Voice = v.GetVoices(string.Empty, string.Empty).Item();
             v.Speak("是的主人");
         }

         if (args.text.Equals("播放七里香"))
         {
             SpVoice v = new SpVoice();
             v.Voice = v.GetVoices(string.Empty, string.Empty).Item();
             v.Speak("好的，主人，开始播放七里香");
             gameObject.SetActive(false);
             xiangdu.SetActive(true);
             xiangdu.GetComponent<AudioSource>().Play();
         }

         if (args.text.Equals("哈哈"))
         {
             SpVoice v = new SpVoice();
             v.Voice = v.GetVoices(string.Empty, string.Empty).Item();
             v.Speak("主人，我没听懂");
             gameObject.SetActive(false);
             xiangdu.SetActive(true);
             xiangdu.GetComponent<AudioSource>().Play();
         }
     }
     private void OnDestroy ()
     {
         //用完应该释放，否则会带来额外的开销
         m_PhraseRecognizer.Dispose ();
     }
     // Update is called once per frame
     void Update ()
     {

     }

 }