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Dobrý deň.

Mám jednoduchý program na nahrávanie zvuku. Funguje, ale je tam veľmi veľký šum. Je na to nejaké riešenie? Ďakujem

using System;
using System.Drawing;
using System.Media;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace SoundRecord
{
    public partial class Form1 : Form
    {
        [DllImport("winmm.dll")]
        private static extern long mciSendString(string command, StringBuilder retstring, int Returnlenth, IntPtr callback);
        bool nahrava = false;
        public Form1()
        {
            InitializeComponent();
            mciSendString("open new Type waveaudio alias recsound", null, 0, IntPtr.Zero);
            this.StartPosition = FormStartPosition.Manual;
            Rectangle workingArea = Screen.GetWorkingArea(this);
            this.Location = new Point(workingArea.Right - Size.Width, workingArea.Bottom - Size.Height);
        }

        private void Button1_Click(object sender, EventArgs e)
        {
            switch(nahrava)
            {
                case false:
                    mciSendString("record recsound", null, 0, IntPtr.Zero);
                    button1.ForeColor = Color.Red;
                    button1.Text = "Stop";
                    button3.Enabled = false;
                    nahrava = true;
                    break;
                case true:
                    mciSendString("save recsound c:/SoundRecord/SoundRecord.wav", null, 0, IntPtr.Zero);
                    mciSendString("close recsound", null, 0, IntPtr.Zero);
                    button1.ForeColor = SystemColors.Desktop;
                    button1.Text = "Record";
                    button3.Enabled = true;
                    nahrava = false;
                    mciSendString("open new Type waveaudio alias recsound", null, 0, IntPtr.Zero);
                    break;
            }           
           
        }        

        private void Button3_Click(object sender, EventArgs e)
        {
            SoundPlayer player = new SoundPlayer();
            player.SoundLocation = @"c:/SoundRecord/SoundRecord.wav";
            player.Play();
        }
    }
}