Unity 声音处理之语音识别

谁践踏了优雅 2021-12-10 01:53 388阅读 0赞

# 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 = 128;    //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=1000;
        private const int frequency = 44100; //码率
        private const int lengthSec = 999;   //录制时长
    
        // Use this for initialization
        void Start () {
            //获取设备名称
            mDeviceName = Microphone.devices[0];
            
          
            //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/200,0.1f);
            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 + 1;
    
            if(offset < 0)
            {
                return 0f;
            }
    
            //获取数据
            mMicrophoneRecode.GetData(volumeData, offset);
    
            //解析数据
            for(int i = 0;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![1427073-20190711165624552-269597985.png][]

1 using System.Collections;
     2 using System.Collections.Generic;
     3 using UnityEngine;
     4 using UnityEngine.Windows.Speech;//引入命名空间  利用
     5 using SpeechLib;
     6 public class NewBehaviourScript1 : MonoBehaviour
     7 {
     8     // 短语识别器
     9     private PhraseRecognizer m_PhraseRecognizer;
    10     // 关键字
    11 
    12     public string[] keywords;
    13 
    14     public GameObject xiangdu;
    15    
    16     // 可信度
    17     public ConfidenceLevel m_confidenceLevel = ConfidenceLevel.Medium;
    18     // Use this for initialization
    19     void Start ()
    20     {
    21     
    22         //创建一个识别器
    23         m_PhraseRecognizer = new KeywordRecognizer (keywords, m_confidenceLevel);
    24         //通过注册监听的方法
    25         m_PhraseRecognizer.OnPhraseRecognized += M_PhraseRecognizer_OnPhraseRecognized;
    26         //开启识别器
    27         m_PhraseRecognizer.Start ();
    28     }
    29 
    30     // 当识别到关键字时，会调用这个方法
    31 
    32     private void M_PhraseRecognizer_OnPhraseRecognized (PhraseRecognizedEventArgs args)
    33     {
    34         print (args.text);
    35         if (args.text.Equals("小爱"))
    36         {
    37             SpVoice v = new SpVoice();
    38             v.Voice = v.GetVoices(string.Empty, string.Empty).Item(0);
    39             v.Speak("我在");
    40         }
    41 
    42         if (args.text.Equals("帮我倒杯水"))
    43         {
    44             SpVoice v = new SpVoice();
    45             v.Voice = v.GetVoices(string.Empty, string.Empty).Item(0);
    46             v.Speak("是的主人");
    47         }
    48 
    49         if (args.text.Equals("播放七里香"))
    50         {
    51             SpVoice v = new SpVoice();
    52             v.Voice = v.GetVoices(string.Empty, string.Empty).Item(0);
    53             v.Speak("好的，主人，开始播放七里香");
    54             gameObject.SetActive(false);
    55             xiangdu.SetActive(true);
    56             xiangdu.GetComponent<AudioSource>().Play();
    57         }
    58 
    59         if (args.text.Equals("哈哈"))
    60         {
    61             SpVoice v = new SpVoice();
    62             v.Voice = v.GetVoices(string.Empty, string.Empty).Item(0);
    63             v.Speak("主人，我没听懂");
    64             gameObject.SetActive(false);
    65             xiangdu.SetActive(true);
    66             xiangdu.GetComponent<AudioSource>().Play();
    67         }
    68     }
    69     private void OnDestroy ()
    70     {
    71         //用完应该释放，否则会带来额外的开销
    72         m_PhraseRecognizer.Dispose ();
    73     }
    74     // Update is called once per frame
    75     void Update ()
    76     {
    77 
    78     }
    79 
    80     
    81 
    82 }

转载于:https://www.cnblogs.com/Fasty/p/11171168.html

[1427073-20190711165624552-269597985.png]: /images/20211209/b47c310262a74fb597047bc6f0b5df42.png