My directx sound buffer has static noise. Please help.

public class Execution : IDisposable
{
	IntPtr Handle;
	DirectSound Device;
	SecondarySoundBuffer Buffer;

	public Execution()
	{
		Handle = System.Diagnostics.Process.GetCurrentProcess().MainWindowHandle;

		Device = new DirectSound();
		Device.SetCooperativeLevel(Handle, CooperativeLevel.Priority);

		var rate = 44100;
		var bits = 16;
		var channels = 1;
		var waveFormat = new WaveFormat(rate, bits, channels);

		// Create a buffer with 2 seconds of sample data
		var seconds = 2;

		var bufferDescription = new SoundBufferDescription() { Format = waveFormat, BufferBytes = waveFormat.AverageBytesPerSecond * seconds };
		Buffer = new SecondarySoundBuffer(Device, bufferDescription);

		var noteFrequency = 440f;       // A
		var bufferData = new float[bufferDescription.BufferBytes];

		var count = 0;
		for (var sample = 0; sample < bufferDescription.BufferBytes; sample++)
		{
			var sampleInSeconds = (float)sample / (float)bufferDescription.BufferBytes * (float)seconds;
			var value = (float)Math.Sin(2f * Math.PI * noteFrequency * sampleInSeconds );
			bufferData[sample] = value;
		}

		Buffer.Write(bufferData, 0, LockFlags.EntireBuffer);
	}

	public void Execute()
	{
		Buffer.Play(0, 0);
	}

	public void Dispose()
	{
		Buffer.Dispose();
		Device.Dispose();
	}
}