New Post: Adaptive Mic Recording (Fill glap with silence to keep accurate time).

Why i am using an Extra Thread is simply to make it easier as i send the Mic data, and i write it, so if i just add the data to a Queue (Silence or real data) it will be in order on that thread anyway.

It also takes of some pressure on the DataAvailable thread, not sure if that matters though.


I prefer using a StopWatch as you said yourself for accuracy, but here is my attempt to your code, but with a StopWatch, it doesn't work as intended however.

        private void Sending(object sender, NAudio.Wave.WaveInEventArgs e)
        {
            try
            {
                var bytesPerMillisecond = 192;
                if (!RecordTimer.IsRunning)
                {
                    TestTimer = 0;
                    RecordTimer.Reset();
                    RecordTimer.Start();
                    if (RecordTimer.ElapsedMilliseconds < 9)
                        Thread.Sleep(1);
                }
                TestTimer += e.Buffer.Length / 192;

                var timeStamp = RecordTimer.Elapsed;
                this.BeginInvoke((Action)(() => { SilenceText.Text = String.Format("Silence: {0} ms", (timeStamp - expectedtime).TotalMilliseconds); }));

                if (timeStamp.Milliseconds > (expectedtime.Milliseconds + 20))
                {
                    double millisecondsToInsert = (timeStamp - expectedtime).TotalMilliseconds;
                    byte[] silence = new byte[bytesPerMillisecond * (int)millisecondsToInsert];
                    SendQueue.Add(silence);
                }

                if (connect && MuteMic.Checked == false && skip == false)
                {
                    SendQueue.Add((byte[])e.Buffer.Clone());
                }
                if (Record && FileCreated == 0)
                {
                    waveWriterYour = new WaveFileWriter(path + Environment.UserName + " - " + DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss-fff") + ".wav", new WaveFormat(48000, 16, 2));
                    FileCreated = 1;
                }
                expectedtime = timeStamp.Add(TimeSpan.FromMilliseconds(e.BytesRecorded / bytesPerMillisecond));
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, ":Sending", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }