Echo.cs

using Dissonance;
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using NAudio;
using NAudio.Wave;
using System.Linq;
using UnityEngine.UIElements;

public class Echo : MonoBehaviour
{
    public const int samplerate = 48000;

    DissonanceComms DC;
    AudioSource audiosrc;
    MyMicrophoneSubscriber MS;

    // Start is called before the first frame update
    void Start()
    {
        MS = gameObject.AddComponent<MyMicrophoneSubscriber>();

        DC = GameObject.Find("DissonanceComms").GetComponent<DissonanceComms>();
        audiosrc = gameObject.AddComponent<AudioSource>();

        DC.SubscribeToRecordedAudio(MS);
        StartCoroutine(WaitRemoteClip());
    }

    IEnumerator WaitRemoteClip()
    {
        while (true)
        {
            yield return new WaitForSeconds(1.5f);
            var audioclip = AudioClip.Create("MySinusoid", 4096, 1, samplerate, true, MS.OnAudioRead, MS.OnAudioSetPosition);
            audiosrc.clip = audioclip;
            audiosrc.PlayOneShot(audioclip);
        }
    }
}

public class MyMicrophoneSubscriber
    : BaseMicrophoneSubscriber
{
    readonly List<float> bufferlist = new List<float>();
    private int position;

    protected override void ProcessAudio(ArraySegment<float> data)
    {
        bufferlist.AddRange(data);
    }

    protected override void ResetAudioStream(WaveFormat waveFormat)
    {
        if (waveFormat.SampleRate != Echo.samplerate)
            throw new NotImplementedException("Wrong sample rate");

        Debug.Log("Reset");

        bufferlist.Clear();
    }

    //After you have copied some amount of data from the bufferlist into the data array,
    // you need to remove exactly that much data from the start of the buffer.
    public void OnAudioRead(float[] data)
    {
        if (bufferlist.Count < data.Length)
        {
            Debug.LogWarning($"Underrun {bufferlist.Count} < {data.Length}");

            // Return silence for now
            Array.Clear(data, 0, data.Length);

            // Pad out buffer with some extra silence, to add more delay
            for (var i = 0; i < 480; i++)
                bufferlist.Add(0);

            return;
        }

        bufferlist.CopyTo(0, data, 0, data.Length);
        bufferlist.RemoveRange(0, data.Length);
    }

    public void OnAudioSetPosition(int newPosition)
    {
        Debug.Log($"Set Position: {newPosition}");
    }
}