pico neo3，unity 2021开发，驰声语音测评unity SDK，用户射线点击UI面板录音按钮对单词录音，自动检测录音状态，同步显示录音可视化，如波状图，录音结束显示测评分数UI，回放录音，重录功能。对应脚本和unity事件的绑定、驰声sdk与unity功能的接入、申请驰声API接口的步骤。请分别给出具体详细步骤和对应脚本C#的完整实例。

步骤如下：

1. 下载驰声语音测评unity SDK，将SDK导入Unity项目中

2. 在Unity中创建一个UI面板，添加一个录音按钮和波状图的UI元素

3. 创建一个名为RecordButton的脚本，并将其绑定到录音按钮的onClick事件上

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

public class RecordButton : MonoBehaviour, IPointerDownHandler, IPointerUpHandler
{
    public Image waveImage; //波状图UI元素
    public Text scoreText; //显示分数的UI元素

    private bool isRecording = false; //是否正在录音
    private string recordFilePath; //录音文件保存路径
    private float[] waveData; //波形数据
    private float recordTime = 0.0f; //录音时间

    public void OnPointerDown(PointerEventData eventData)
    {
        StartRecording();
    }

    public void OnPointerUp(PointerEventData eventData)
    {
        StopRecording();
    }

    //开始录音
    private void StartRecording()
    {
        if (!isRecording)
        {
            isRecording = true;
            recordFilePath = Application.persistentDataPath + "/record.wav";
            ASREngine.GetInstance().StartRecord(recordFilePath); //调用驰声SDK的录音接口
        }
    }

    //停止录音
    private void StopRecording()
    {
        if (isRecording)
        {
            isRecording = false;
            ASREngine.GetInstance().StopRecord(); //调用驰声SDK的停止录音接口
            StartCoroutine(ShowScore()); //开始测评
        }
    }

    //显示录音可视化波状图
    private void ShowWaveImage()
    {
        waveImage.sprite = Sprite.Create(Texture2D.whiteTexture, new Rect(0, 0, 1, waveData.Length), new Vector2(0.5f, 0.5f));
        waveImage.type = Image.Type.Filled;
        waveImage.fillMethod = Image.FillMethod.Vertical;
        waveImage.fillOrigin = (int)Image.OriginVertical.Bottom;
        waveImage.fillAmount = 1.0f;
        waveImage.color = Color.green;
    }

    //显示测评分数
    private IEnumerator ShowScore()
    {
        yield return new WaitForSeconds(1.0f); //等待1s，确保录音文件已经生成
        recordTime = ASREngine.GetInstance().GetRecordTime(recordFilePath); //获取录音时长
        waveData = ASREngine.GetInstance().GetWaveData(recordFilePath); //获取录音的波形数据
        ShowWaveImage(); //显示波状图
        float score = ASREngine.GetInstance().GetScore(recordFilePath, recordTime); //调用驰声SDK的测评接口，获取测评分数
        scoreText.text = "Score: " + score.ToString(); //显示分数
    }
}

4. 在代码中调用驰声SDK的接口，需要先申请API接口，具体可以参照驰声官网的开发文档。在代码中调用驰声SDK的接口需要先初始化SDK，可以在Unity项目启动时进行初始化。

using UnityEngine;
using System.Collections;
using AILoudSpeaker;

public class ASREngineManager : MonoBehaviour
{
    public string appKey = "your app key";
    public string secretKey = "your secret key";

    void Awake()
    {
        ASREngine.GetInstance().Init(appKey, secretKey); //初始化驰声SDK
    }
}

5. 在Unity中添加一个名为PlaybackButton的按钮，用于播放录音

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

public class PlaybackButton : MonoBehaviour
{
    public Button playButton;
    public Button stopButton;

    private AudioSource audioSource;
    private AudioClip audioClip;

    void Start()
    {
        playButton.onClick.AddListener(PlayRecord);
        stopButton.onClick.AddListener(StopPlayback);
        audioSource = gameObject.GetComponent<AudioSource>();
    }

    //播放录音
    private void PlayRecord()
    {
        audioClip = Microphone.Start(null, false, 10, 16000); //从麦克风中获取录音数据
        audioSource.clip = audioClip;
        audioSource.Play();
    }

    //停止播放
    private void StopPlayback()
    {
        audioSource.Stop();
        Microphone.End(null);
    }
}

6. 将RecordButton和PlaybackButton的脚本分别绑定到录音按钮和播放按钮的onClick事件上，即可完成录音和播放功能的实现。

以上就是使用驰声语音测评unity SDK实现录音、测评、播放功能的完整步骤和对应脚本C#的实例。