Sound with equalizer

Question

I have been trying to create an equalizer with C # for several days. I saw NAudio for quite some time, but I could not find a working equalizer that would work with naudio. Now, after a few days, I'm finally here @stackoverflow and hopefully you know a way to create an equalizer using C #.

PS: I also tried System.Media.SoundPlayer. But this SoundPlayer does not even support anything related to dsp. So, is there still an audio library that works with “clear” sound from the outside?

Answer 1

So is there still an audio library that works with “clear” sound from the outside?

Yes, there is one: https://cscore.codeplex.com

According to EqualizerSample, you can use the equalizer as follows:

using CSCore; using CSCore.Codecs; using CSCore.SoundOut; using CSCore.Streams; using System; using System.Threading; ... private static void Main(string[] args) { const string filename = @"C:\Temp\test.mp3"; EventWaitHandle waitHandle = new AutoResetEvent(false); try { //create a source which provides audio data using(var source = CodecFactory.Instance.GetCodec(filename)) { //create the equalizer. //You can create a custom eq with any bands you want, or you can just use the default 10 band eq. Equalizer equalizer = Equalizer.Create10BandEqualizer(source); //create a soundout to play the source ISoundOut soundOut; if(WasapiOut.IsSupportedOnCurrentPlatform) { soundOut = new WasapiOut(); } else { soundOut = new DirectSoundOut(); } soundOut.Stopped += (s, e) => waitHandle.Set(); IWaveSource finalSource = equalizer.ToWaveSource(16); //since the equalizer is a samplesource, you have to convert it to a raw wavesource soundOut.Initialize(finalSource); //initialize the soundOut with the previously created finalSource soundOut.Play(); /* * You can change the filter configuration of the equalizer at any time. */ equalizer.SampleFilters[0].SetGain(20); //eq set the gain of the first filter to 20dB (if needed, you can set the gain value for each channel of the source individually) //wait until the playback finished //of course that is optional waitHandle.WaitOne(); //remember to dispose and the soundout and the source soundOut.Dispose(); } } catch(NotSupportedException ex) { Console.WriteLine("Fileformat not supported: " + ex.Message); } catch(Exception ex) { Console.WriteLine("Unexpected exception: " + ex.Message); } } 

You can adjust the equalizer to whatever you want. And since it works 100% in real time, all changes are instantly applied. If necessary, it is possible to access the change of each channel separately.