SineWaveProvider.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace LocalisedSoundSources
{
    public class SineWaveProvider32 : WaveProvider32
    {
        int sample;

        public SineWaveProvider32()
        {
            Frequency = 1000;
            Amplitude = 0.25f; // let's not hurt our ears           
        }

        public float Frequency { get; set; }
        public float Amplitude { get; set; }

        public override int Read(float[] buffer, int offset, int sampleCount)
        {
            int sampleRate = WaveFormat.SampleRate;
            for (int n = 0; n < sampleCount; n = n + this.WaveFormat.Channels)
            {
                //for (int channels = 0; channels < this.WaveFormat.Channels; channels++)
                //{
                //    buffer[n + offset + channels] = (float)(Amplitude * Math.Sin((2 * Math.PI * sample * Frequency) / sampleRate));
                //}
                buffer[n + offset] = (float)(Amplitude * Math.Sin((2 * Math.PI * sample * Frequency) / sampleRate));
                buffer[n + offset + 1] = 0f;
                sample++;
                if (sample >= sampleRate) sample = 0;
            }
            return sampleCount;
        }
    }
}