OpenAL EFX Reverb example

using System;
using System.Threading;
using System.IO;
using OpenTK.Audio;
 
namespace Examples
{
    public class ReverbExample
    {
        static readonly string filename = Path.Combine(Path.Combine("Data", "Audio"), "APACHE.wav");
        public static void Main()
        {
            using (AudioContext context = new AudioContext())
            using (AudioReader sound = new AudioReader(filename))
            {
                Console.WriteLine("Testing WaveReader({0}).ReadToEnd()", filename);
 
                EffectsExtension EFX = new EffectsExtension();
 
                int buffer = AL.GenBuffer();
                int source = AL.GenSource();
                int state;
                int[] slots = new int[1];
                int[] effects = new int[1];
 
                EFX.GenAuxiliaryEffectSlots(1, out slots[0]);
 
                EFX.BindEffect(effects[0], EfxEffectType.Reverb);
                EFX.Effect(effects[0], EfxEffectf.ReverbDecayTime, 3.0f);
                EFX.Effect(effects[0], EfxEffectf.ReverbDecayHFRatio, 0.91f);
                EFX.Effect(effects[0], EfxEffectf.ReverbDensity, 0.7f);
                EFX.Effect(effects[0], EfxEffectf.ReverbDiffusion, 0.9f);
                EFX.Effect(effects[0], EfxEffectf.ReverbRoomRolloffFactor, 3.1f);
                EFX.Effect(effects[0], EfxEffectf.ReverbReflectionsGain, 0.723f);
                EFX.Effect(effects[0], EfxEffectf.ReverbReflectionsDelay, 0.03f);
                EFX.Effect(effects[0], EfxEffectf.ReverbGain, 0.23f);
 
                EFX.AuxiliaryEffectSlot(slots[0], EfxAuxiliaryi.EffectslotEffect, effects[0]);
 
                AL.BufferData(buffer, sound.ReadToEnd());
 
                AL.Source(source, ALSourcef.ConeOuterGain, 1.0f);
                AL.Source(source, ALSourcei.Buffer, buffer);
                AL.SourcePlay(source);
 
                Console.Write("Playing");
 
                // Query the source to find out when it stops playing.
                do
                {
                    Thread.Sleep(250);
                    Console.Write(".");
                    AL.GetSource(source, ALGetSourcei.SourceState, out state);
                }
                while ((ALSourceState)state == ALSourceState.Playing);
 
                Console.WriteLine();
 
                AL.SourceStop(source);
                AL.DeleteSource(source);
                AL.DeleteBuffer(buffer);
                EFX.DeleteEffects(effects);
                EFX.DeleteAuxiliaryEffectSlots(slots);
            }
        }
    }
}