C＃中的高质量图形/波形显示组件

我正在寻找一种快速，专业外观和可定制的C＃波形显示组件。

我想在时域和频域主要显示实时音频波形（快！）。 我想能够缩放，更改轴设置，显示多个通道，自定义手感和颜色等…

任何人都知道任何事情，无论是否商业？

谢谢！

迭戈

Answer 1

我前一段时间碰到了一个代码项目。

查看http://www.codeproject.com/KB/miscctrl/GraphComponents.aspx它可能正是您要在.net中进行实时绘图的内容

Answer 2

据我所知，民族乐器有一些很酷的控制，但它不是免费的。

http://sine.ni.com/psp/app/doc/p/id/psp-317

免费的：

http://www.codeproject.com/KB/audio-video/wavecontrol.aspx

Answer 3

那是一个波流式显示器

http://www.codeproject.com/KB/audio-video/wavecontrol.aspx

Answer 4

查看Zedgraph。 它是一个免费的图形库，效果很好。 他们的网站上有很多代码示例，可以让您按照自己的要求进行操作。 Zedgraph下载他们的网站现在似乎有问题，但下载会话工作并包含他们的所有示例文件。

Answer 5

这将使用nAudio从音频文件生成波形…

using NAudio.Wave; using System; using System.Collections.Generic; using System.Drawing; using System.IO; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; public partial class test : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { string strPath = Server.MapPath("audio/060.mp3"); string SongID = "2"; byte[] bytes = File.ReadAllBytes(strPath); WriteToFile(SongID,strPath, bytes); Response.Redirect("Main.aspx"); } private void WriteToFile(string SongID, string strPath, byte[] Buffer) { try { int samplesPerPixel = 128; long startPosition = 0; //FileStream newFile = new FileStream(GeneralUtils.Get_SongFilePath() + "/" + strPath, FileMode.Create); float[] data = FloatArrayFromByteArray(Buffer); Bitmap bmp = new Bitmap(1170, 200); int BORDER_WIDTH = 5; int width = bmp.Width - (2 * BORDER_WIDTH); int height = bmp.Height - (2 * BORDER_WIDTH); NAudio.Wave.Mp3FileReader reader = new NAudio.Wave.Mp3FileReader(strPath, wf => new NAudio.FileFormats.Mp3.DmoMp3FrameDecompressor(wf)); NAudio.Wave.WaveChannel32 channelStream = new NAudio.Wave.WaveChannel32(reader); int bytesPerSample = (reader.WaveFormat.BitsPerSample / 8) * channelStream.WaveFormat.Channels; using (Graphics g = Graphics.FromImage(bmp)) { g.Clear(Color.White); Pen pen1 = new Pen(Color.Gray); int size = data.Length; string hexValue1 = "#009adf"; Color colour1 = System.Drawing.ColorTranslator.FromHtml(hexValue1); pen1.Color = colour1; Stream wavestream = new NAudio.Wave.Mp3FileReader(strPath, wf => new NAudio.FileFormats.Mp3.DmoMp3FrameDecompressor(wf)); wavestream.Position = 0; int bytesRead1; byte[] waveData1 = new byte[samplesPerPixel * bytesPerSample]; wavestream.Position = startPosition + (width * bytesPerSample * samplesPerPixel); for (float x = 0; x < width; x++) { short low = 0; short high = 0; bytesRead1 = wavestream.Read(waveData1, 0, samplesPerPixel * bytesPerSample); if (bytesRead1 == 0) break; for (int n = 0; n < bytesRead1; n += 2) { short sample = BitConverter.ToInt16(waveData1, n); if (sample < low) low = sample; if (sample > high) high = sample; } float lowPercent = ((((float)low) - short.MinValue) / ushort.MaxValue); float highPercent = ((((float)high) - short.MinValue) / ushort.MaxValue); float lowValue = height * lowPercent; float highValue = height * highPercent; g.DrawLine(pen1, x, lowValue, x, highValue); } } string filename = Server.MapPath("image/060.png"); bmp.Save(filename); bmp.Dispose(); } catch (Exception e) { } } public float[] FloatArrayFromStream(System.IO.MemoryStream stream) { return FloatArrayFromByteArray(stream.GetBuffer()); } public float[] FloatArrayFromByteArray(byte[] input) { float[] output = new float[input.Length / 4]; for (int i = 0; i < output.Length; i++) { output[i] = BitConverter.ToSingle(input, i * 4); } return output; } } 

Answer 6

基于Illaya的代码：

 public void CreateWaveForm(string audioFilePath, string audioWaveFormFilePath) { try { int bytesPerSample = 0; using (NAudio.Wave.Mp3FileReader reader = new NAudio.Wave.Mp3FileReader(audioFilePath, wf => new NAudio.FileFormats.Mp3.DmoMp3FrameDecompressor(wf))) { using (NAudio.Wave.WaveChannel32 channelStream = new NAudio.Wave.WaveChannel32(reader)) { bytesPerSample = (reader.WaveFormat.BitsPerSample / 8) * channelStream.WaveFormat.Channels; //Give a size to the bitmap; either a fixed size, or something based on the length of the audio using (Bitmap bitmap = new Bitmap((int)Math.Round(reader.TotalTime.TotalSeconds * 40), 200)) { int width = bitmap.Width; int height = bitmap.Height; using (Graphics graphics = Graphics.FromImage(bitmap)) { graphics.Clear(Color.White); Pen bluePen = new Pen(Color.Blue); int samplesPerPixel = (int)(reader.Length / (double)(width * bytesPerSample)); int bytesPerPixel = bytesPerSample * samplesPerPixel; int bytesRead; byte[] waveData = new byte[bytesPerPixel]; for (float x = 0; x < width; x++) { bytesRead = reader.Read(waveData, 0, bytesPerPixel); if (bytesRead == 0) break; short low = 0; short high = 0; for (int n = 0; n < bytesRead; n += 2) { short sample = BitConverter.ToInt16(waveData, n); if (sample < low) low = sample; if (sample > high) high = sample; } float lowPercent = ((((float)low) - short.MinValue) / ushort.MaxValue); float highPercent = ((((float)high) - short.MinValue) / ushort.MaxValue); float lowValue = height * lowPercent; float highValue = height * highPercent; graphics.DrawLine(bluePen, x, lowValue, x, highValue); } } bitmap.Save(audioWaveFormFilePath); } } } } catch { } }