Tests.SpeechTests.TestFlatten C# (CSharp) Method

        public void TestFlatten()
        {
            EventWaitHandle waitHandle = new AutoResetEvent(false);

            using (MemoryStream stream = new MemoryStream())
            using (SpeechSynthesizer synth = new SpeechSynthesizer())
            {
                synth.SetOutputToWaveStream(stream);
                synth.Speak("This is a test for flattening");
                stream.Seek(0, SeekOrigin.Begin);

                IWaveSource source = new WaveFileReader(stream);
                Equalizer equalizer = Equalizer.Create10BandEqualizer(source);
                equalizer.SampleFilters[0].SetGain(-9.6f);
                equalizer.SampleFilters[1].SetGain(-9.6f);
                equalizer.SampleFilters[2].SetGain(-9.6f);
                equalizer.SampleFilters[3].SetGain(-3.9f);
                equalizer.SampleFilters[4].SetGain(2.4f);
                equalizer.SampleFilters[5].SetGain(11.1f);
                equalizer.SampleFilters[6].SetGain(15.9f);
                equalizer.SampleFilters[7].SetGain(15.9f);
                equalizer.SampleFilters[8].SetGain(15.9f);
                equalizer.SampleFilters[9].SetGain(16.7f);

                var soundOut = new WasapiOut();
                soundOut.Stopped += (s, e) => waitHandle.Set();

                soundOut.Initialize(equalizer.ToWaveSource());
                soundOut.Play();

                waitHandle.WaitOne();

                soundOut.Dispose();
                equalizer.Dispose();
                source.Dispose();
            }
        }