c# - 带均衡器的声音

Question

几天以来，我一直在尝试使用 C# 创建均衡器。看过 NAudio 很多时间，但我找不到任何可以与 naudio 配合使用的均衡器。几天后，我终于来到了@stackoverflow，希望你知道一种使用 c# 创建均衡器的方法。

PS：我也试过 System.Media.SoundPlayer。但是那个 SoundPlayer 甚至不支持任何与 dsp 相关的东西。那么是否有另一个音频库可以与外面的“纯”音频一起使用？

Answer 1

那么是否有另一个音频库可以与外面的“纯”音频一起使用？

是的，有一个：https ://ccore.codeplex.com

根据EqualizerSample，您可以像这样使用均衡器：

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);
    }
}

您可以根据需要配置均衡器。由于它 100% 实时运行，所有更改都会立即应用。如果需要，还可以单独访问修改每个通道。