NAudio Audio Lib

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NAudio .NET Audio Library

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資料來源: http://naudio.codeplex.com/documentation

How do I...?

The best way to learn how to use NAudio is to download the source code and look at the two demo applications - NAudioDemo and NAudioWpfDemo. These demonstrate several of the key capabilities of the NAudio framework. They also have the advantage of being kept up to date, whilst some of the tutorials you will find on the internet refer to old versions of NAudio.

• Choose an audio output driver
• Play an MP3 File
• Convert an MP3 to WAV
• Play a WAV File
• Use the WavFileWriter class
• Play streaming MP3
• Implement Looped Playback
• Trim a WAV File
• Play a Sine Wave
• Merge MP3 Files
• Convert an AIFF file to WAV
• Work with Multi-Channel Audio
• Create an ID3v2 tag

Getting Started with NAudio – Downloading and Compiling

1. Download a copy of the NAudio source code (or a pre-compiled version but the newest available code is available in source form first).
   http://naudio.codeplex.com/SourceControl/list/changesets
2. The default project is set to the NAudio class library. Class Library’s don’t have anything to look at when you press F5. If this is your first time with NAudio, set the start-up project as NAudioDemo and then hit F5. The NAudioDemo project shows the base functionality you can utilise through your own project.
3. In the BIN directory for the built solution, you can find a copy of the NAudio library for using and referencing in your own project. Make sure that you grab a copy of the NAudio.XML file as well if your copying it over to your own projects directory, that way you will have the intellisense documentation for use in Visual Studio when working with the NAudio API.

Additional Tutorials from OpenSebJ's blog (n.b. these are for NAudio 1.3):

• Tutorial 1: Introduction to Using NAudio
• Tutorial 2: Mixing Multiple Wave Files Together in Real Time
• Tutorial 3 - Sample Properties
• Tutorial 4 - Sample Reversing
• Tutorial 5 - Recording Audio
• Tutorial 6 - MIDI Interfacing

http://stackoverflow.com/

Last edited Nov 10 at 3:53 PM by markheath, version 28

C# Windows混音器控制

資料來源 :  Audio Library Part I - (Windows Mixer Control)

 

Introduction

In this article, I'll show you how to use Windows Mixer from C#.

For some time, I was trying to get information about how to program the mixer from C#. I didn't have too much luck, and the few examples found were in C++, so… I took the hard and fun way... doing it myself.

This library is part of my Audio library to control Wave Audio (Playback/Recording), Mixer,Playback/Recording compressed files using ACM, basic speech recognition and some other stuff that I'll be releasing in future articles.

AudioMixer Namespace

 

Hierarchical Objects View

The hierarchical view shows how the classes are organized.

The main object Mixers contains two Mixer objects, Playback and Recording; those will work with default devices, but can be changed by setting the property Mixers.Playback.DeviceId orMixers.Recording.DeviceId.

I made it as simple as possible by hiding all the flat Win32 API implementation from the developer and creating a hierarchical set of objects.

Every mixer is autonomous, meaning you can have Playback mixer set to one soundcard and Recordingmixer to another one. Also each one contains two arrays or MixerLines (Lines, UserLines).

Lines object will contain all lines inside the mixer, for example all the lines that don't have controls associated with it or lines that are not source lines.

UserLines will contains all lines that the developer can interact with, having controls like Volume, Mute, Fadder,Bass, etc. (basically it is the same as Lines object but a filter was applied to it).

Every Line will contain a collection of controls, like Mute, Volume, Bass, Fader, etc.

If you are interested in knowing more about how Windows Mixer works, here is an excellent link with all the information about it.

Let's See Some Code

• To Get the Audio Devices in the Computer

  foreach(MixerDetail mixerDetail in mMixers.Devices)

  {

      ...

      ...

  }

 

• 
  

  To Get the Input Devices
  

  
  

  foreach(MixerDetail mixerDetail in mMixers.Recording.Devices)

  {

      ...

      ...

  }



• 
  

       More  ………

錄音與 WAV 轉 MP3

mciSendString function (Windows) :

http://msdn.microsoft.com/en-us/library/windows/desktop/dd757161(v=vs.85).aspx

C#中DirectSound錄音的使用:

http://developer.51cto.com/art/200908/144657.htm

MP3基本介紹與LAME設定 :

 http://septemberism.onmitsu.jp/eac/htm/lame_setting.htm

http://cgclub.blog.hexun.com.tw/60766146_d.html

 

轉檔程式: WAV to MP3 converter in C#.NET (43883-04010-WAV-MP3-converter-C.NET.rar)

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Diagnostics;

using System.IO;

using System.Threading;

namespace WavToMP3

{

    public partial class MainForm : Form

    {

        public MainForm()

        {

            InitializeComponent();

        }

        private void BrowseButton_Click(object sender, EventArgs e)

        {

            if (OpenWavFilesDialog.ShowDialog() == DialogResult.OK)

            {

                TotalFiles.Text = "Total Files = "+OpenWavFilesDialog.FileNames.Length.ToString();

            }

        }

        private void SaveAsButton_Click(object sender, EventArgs e)

        {

            if (SaveMP3FolderBrowserDialog.ShowDialog() == DialogResult.OK)

            { 

            SaveFilesPath.Text=SaveMP3FolderBrowserDialog.SelectedPath.ToString();

            }

        }

        private void ConvertButton_Click(object sender, EventArgs e)

        {

            if (OpenWavFilesDialog.FileNames.Length > 0 && SaveMP3FolderBrowserDialog.SelectedPath != "")

            {

                progressBar1.Visible = true;

                BrowseButton.Enabled = false;

                SaveAsButton.Enabled = false;

                BitrateComboBox.Enabled = false;

                SamplingrateComboBox.Enabled = false;

                ConvertButton.Enabled = false;

                try

                {

                    progressBar1.Maximum = OpenWavFilesDialog.FileNames.Length;

                    foreach (string  fn in OpenWavFilesDialog.FileNames)

                    {

                        ProcessStartInfo psi = new ProcessStartInfo();

                        psi.UseShellExecute = false;

                        psi.CreateNoWindow = true;

                        psi.WindowStyle = ProcessWindowStyle.Hidden;

                        psi.FileName = Application.StartupPath + @"\lame.exe";

                        psi.Arguments = "-b" + BitrateComboBox.SelectedItem.ToString() + " --resample " + SamplingrateComboBox.SelectedItem.ToString() + " -m j " +

                                       "\"" + fn + "\"" + " " +

                                        "\"" + SaveFilesPath.Text + "\\" + Path.GetFileNameWithoutExtension(fn)+".mp3" + "\"";

                        Process p = Process.Start(psi);

                        p.Close();

                        p.Dispose();

                        progressBar1.Value = progressBar1.Value + 1;

                        Thread.Sleep(1000);

                        if (progressBar1.Value == progressBar1.Maximum)

                        {

                            MessageBox.Show(OpenWavFilesDialog.FileNames.Length + " File(s) Convertd Successfully", "Success");

                            progressBar1.Visible = false;

                            progressBar1.Value = 0;

                            TotalFiles.Clear();

                            BrowseButton.Enabled = true;

                            SaveFilesPath.Clear();

                            SaveAsButton.Enabled = true;

                            BitrateComboBox.Enabled = true;

                            SamplingrateComboBox.Enabled = true;

                            ConvertButton.Enabled = true;

                            OpenWavFilesDialog.Reset();

                            SaveMP3FolderBrowserDialog.Reset();

                        }

                    }

                }

                catch (Exception ex)

                {

                    MessageBox.Show(ex.ToString());

                }

            }

            else

            { 

            }

        }

        private void MainForm_Load(object sender, EventArgs e)

        {

            BitrateComboBox.SelectedIndex = 8;

            SamplingrateComboBox.SelectedIndex = 1;

        }

        private void BitrateComboBox_SelectedIndexChanged(object sender, EventArgs e)

        {

        }

    }

}

MainForm.Designer.cs

 

namespace WavToMP3

{

    partial class MainForm

    {

        /// <summary>

        /// Required designer variable.

        /// </summary>

        private System.ComponentModel.IContainer components = null;

        /// <summary>

        /// Clean up any resources being used.

        /// </summary>

        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>

        protected override void Dispose(bool disposing)

        {

            if (disposing && (components != null))

            {

                components.Dispose();

            }

            base.Dispose(disposing);

        }

        #region Windows Form Designer generated code

        /// <summary>

        /// Required method for Designer support - do not modify

        /// the contents of this method with the code editor.

        /// </summary>

        private void InitializeComponent()

        {

            this.TotalFiles = new System.Windows.Forms.TextBox();

            this.SaveFilesPath = new System.Windows.Forms.TextBox();

            this.BrowseButton = new System.Windows.Forms.Button();

            this.SaveAsButton = new System.Windows.Forms.Button();

            this.ConvertButton = new System.Windows.Forms.Button();

            this.OpenWavFilesDialog = new System.Windows.Forms.OpenFileDialog();

            this.SaveMP3FolderBrowserDialog = new System.Windows.Forms.FolderBrowserDialog();

            this.BitrateComboBox = new System.Windows.Forms.ComboBox();

            this.SamplingrateComboBox = new System.Windows.Forms.ComboBox();

            this.label1 = new System.Windows.Forms.Label();

            this.label2 = new System.Windows.Forms.Label();

            this.progressBar1 = new System.Windows.Forms.ProgressBar();

            this.SuspendLayout();

            // 

            // TotalFiles

            // 

            this.TotalFiles.Enabled = false;

            this.TotalFiles.Location = new System.Drawing.Point(12, 11);

            this.TotalFiles.Name = "TotalFiles";

            this.TotalFiles.ReadOnly = true;

            this.TotalFiles.Size = new System.Drawing.Size(720, 22);

            this.TotalFiles.TabIndex = 0;

            // 

            // SaveFilesPath

            // 

            this.SaveFilesPath.Enabled = false;

            this.SaveFilesPath.Location = new System.Drawing.Point(12, 54);

            this.SaveFilesPath.Name = "SaveFilesPath";

            this.SaveFilesPath.ReadOnly = true;

            this.SaveFilesPath.Size = new System.Drawing.Size(720, 22);

            this.SaveFilesPath.TabIndex = 1;

            // 

            // BrowseButton

            // 

            this.BrowseButton.Location = new System.Drawing.Point(747, 9);

            this.BrowseButton.Name = "BrowseButton";

            this.BrowseButton.Size = new System.Drawing.Size(75, 21);

            this.BrowseButton.TabIndex = 2;

            this.BrowseButton.Text = "Browse";

            this.BrowseButton.UseVisualStyleBackColor = true;

            this.BrowseButton.Click += new System.EventHandler(this.BrowseButton_Click);

            // 

            // SaveAsButton

            // 

            this.SaveAsButton.Location = new System.Drawing.Point(747, 52);

            this.SaveAsButton.Name = "SaveAsButton";

            this.SaveAsButton.Size = new System.Drawing.Size(75, 21);

            this.SaveAsButton.TabIndex = 3;

            this.SaveAsButton.Text = "Save";

            this.SaveAsButton.UseVisualStyleBackColor = true;

            this.SaveAsButton.Click += new System.EventHandler(this.SaveAsButton_Click);

            // 

            // ConvertButton

            // 

            this.ConvertButton.Location = new System.Drawing.Point(747, 92);

            this.ConvertButton.Name = "ConvertButton";

            this.ConvertButton.Size = new System.Drawing.Size(75, 21);

            this.ConvertButton.TabIndex = 4;

            this.ConvertButton.Text = "Convert";

            this.ConvertButton.UseVisualStyleBackColor = true;

            this.ConvertButton.Click += new System.EventHandler(this.ConvertButton_Click);

            // 

            // OpenWavFilesDialog

            // 

            this.OpenWavFilesDialog.Filter = "WAV Files|*.wav";

            this.OpenWavFilesDialog.Multiselect = true;

            // 

            // BitrateComboBox

            // 

            this.BitrateComboBox.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;

            this.BitrateComboBox.FormattingEnabled = true;

            this.BitrateComboBox.Items.AddRange(new object[] {

            "32",

            "40",

            "48",

            "56",

            "64",

            "80",

            "96",

            "112",

            "128",

            "144",

            "160"});

            this.BitrateComboBox.Location = new System.Drawing.Point(168, 94);

            this.BitrateComboBox.Name = "BitrateComboBox";

            this.BitrateComboBox.Size = new System.Drawing.Size(121, 20);

            this.BitrateComboBox.TabIndex = 5;

            this.BitrateComboBox.SelectedIndexChanged += new System.EventHandler(this.BitrateComboBox_SelectedIndexChanged);

            // 

            // SamplingrateComboBox

            // 

            this.SamplingrateComboBox.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;

            this.SamplingrateComboBox.FormattingEnabled = true;

            this.SamplingrateComboBox.Items.AddRange(new object[] {

            "16",

            "22.05",

            "24"});

            this.SamplingrateComboBox.Location = new System.Drawing.Point(480, 94);

            this.SamplingrateComboBox.Name = "SamplingrateComboBox";

            this.SamplingrateComboBox.Size = new System.Drawing.Size(121, 20);

            this.SamplingrateComboBox.TabIndex = 6;

            // 

            // label1

            // 

            this.label1.AutoSize = true;

            this.label1.Location = new System.Drawing.Point(92, 97);

            this.label1.Name = "label1";

            this.label1.Size = new System.Drawing.Size(71, 12);

            this.label1.TabIndex = 7;

            this.label1.Text = "Bitrate (Kbps)";

            // 

            // label2

            // 

            this.label2.AutoSize = true;

            this.label2.Location = new System.Drawing.Point(369, 97);

            this.label2.Name = "label2";

            this.label2.Size = new System.Drawing.Size(105, 12);

            this.label2.TabIndex = 8;

            this.label2.Text = "Sampling Rate (KHz)";

            // 

            // progressBar1

            // 

            this.progressBar1.Location = new System.Drawing.Point(12, 31);

            this.progressBar1.Name = "progressBar1";

            this.progressBar1.Size = new System.Drawing.Size(720, 21);

            this.progressBar1.TabIndex = 9;

            this.progressBar1.Visible = false;

            // 

            // MainForm

            // 

            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);

            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

            this.ClientSize = new System.Drawing.Size(834, 122);

            this.Controls.Add(this.progressBar1);

            this.Controls.Add(this.label2);

            this.Controls.Add(this.label1);

            this.Controls.Add(this.SamplingrateComboBox);

            this.Controls.Add(this.BitrateComboBox);

            this.Controls.Add(this.ConvertButton);

            this.Controls.Add(this.SaveAsButton);

            this.Controls.Add(this.BrowseButton);

            this.Controls.Add(this.SaveFilesPath);

            this.Controls.Add(this.TotalFiles);

            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Fixed3D;

            this.MaximizeBox = false;

            this.Name = "MainForm";

            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;

            this.Text = "Wav To MP3";

            this.Load += new System.EventHandler(this.MainForm_Load);

            this.ResumeLayout(false);

            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.TextBox TotalFiles;

        private System.Windows.Forms.TextBox SaveFilesPath;

        private System.Windows.Forms.Button BrowseButton;

        private System.Windows.Forms.Button SaveAsButton;

        private System.Windows.Forms.Button ConvertButton;

        private System.Windows.Forms.OpenFileDialog OpenWavFilesDialog;

        private System.Windows.Forms.FolderBrowserDialog SaveMP3FolderBrowserDialog;

        private System.Windows.Forms.ComboBox BitrateComboBox;

        private System.Windows.Forms.ComboBox SamplingrateComboBox;

        private System.Windows.Forms.Label label1;

        private System.Windows.Forms.Label label2;

        private System.Windows.Forms.ProgressBar progressBar1;

    }

}

 

錄音程式: WinFormsRecord.zip

 

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using Microsoft.VisualBasic.Devices;

using Microsoft.VisualBasic;

using System.Runtime.InteropServices;

namespace WinFormsRecord

{

    public partial class Form1 : Form

    {

       [DllImport("winmm.dll", EntryPoint = "mciSendStringA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]

        //[DllImport("winmm.dll", EntryPoint = "mciSendStringW", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]

        private static extern int mciSendString(string lpstrCommand, string lpstrReturnString, int uReturnLength, int hwndCallback);

        public Form1()

        {

            InitializeComponent();

        }

        private void btnRecord_Click(object sender, EventArgs e)

        {

            // record from microphone

            mciSendString("open new Type waveaudio Alias recsound", "", 0, 0);

            mciSendString("record recsound", "", 0, 0);

        }

        private void btnSaveStop_Click(object sender, EventArgs e)

        {

            // stop and save

            mciSendString("save recsound D:\\record.wav", "", 0, 0);

            mciSendString("close recsound ", "", 0, 0);

            Computer c = new Computer();c.Audio.Stop();

        }

        private void btnRead_Click(object sender, EventArgs e)

        {

            Computer computer = new Computer();

            computer.Audio.Play("D:\\record.wav", AudioPlayMode.Background);

        }

    }

}

MainForm.Designer.cs

 

namespace WinFormsRecord

{

    partial class Form1

    {

        /// <summary>

        /// 設計工具所需的變數。

        /// </summary>

        private System.ComponentModel.IContainer components = null;

        /// <summary>

        /// 清除任何使用中的資源。

        /// </summary>

        /// <param name="disposing">如果應該處置 Managed 資源則為 true，否則為 false。</param>

        protected override void Dispose(bool disposing)

        {

            if (disposing && (components != null))

            {

                components.Dispose();

            }

            base.Dispose(disposing);

        }

        #region Windows Form 設計工具產生的程式碼

        /// <summary>

        /// 此為設計工具支援所需的方法 - 請勿使用程式碼編輯器修改這個方法的內容。

        ///

        /// </summary>

        private void InitializeComponent()

        {

            this.btnRecord = new System.Windows.Forms.Button();

            this.btnSaveStop = new System.Windows.Forms.Button();

            this.btnRead = new System.Windows.Forms.Button();

            this.SuspendLayout();

            // 

            // btnRecord

            // 

            this.btnRecord.Location = new System.Drawing.Point(13, 13);

            this.btnRecord.Name = "btnRecord";

            this.btnRecord.Size = new System.Drawing.Size(75, 23);

            this.btnRecord.TabIndex = 0;

            this.btnRecord.Text = "Record";

            this.btnRecord.UseVisualStyleBackColor = true;

            this.btnRecord.Click += new System.EventHandler(this.btnRecord_Click);

            // 

            // btnSaveStop

            // 

            this.btnSaveStop.Location = new System.Drawing.Point(95, 13);

            this.btnSaveStop.Name = "btnSaveStop";

            this.btnSaveStop.Size = new System.Drawing.Size(75, 23);

            this.btnSaveStop.TabIndex = 1;

            this.btnSaveStop.Text = "SaveStop";

            this.btnSaveStop.UseVisualStyleBackColor = true;

            this.btnSaveStop.Click += new System.EventHandler(this.btnSaveStop_Click);

            // 

            // btnRead

            // 

            this.btnRead.Location = new System.Drawing.Point(177, 13);

            this.btnRead.Name = "btnRead";

            this.btnRead.Size = new System.Drawing.Size(75, 23);

            this.btnRead.TabIndex = 2;

            this.btnRead.Text = "Read";

            this.btnRead.UseVisualStyleBackColor = true;

            this.btnRead.Click += new System.EventHandler(this.btnRead_Click);

            // 

            // Form1

            // 

            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);

            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

            this.ClientSize = new System.Drawing.Size(268, 58);

            this.Controls.Add(this.btnRead);

            this.Controls.Add(this.btnSaveStop);

            this.Controls.Add(this.btnRecord);

            this.Name = "Form1";

            this.Text = "Form1";

            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Button btnRecord;

        private System.Windows.Forms.Button btnSaveStop;

        private System.Windows.Forms.Button btnRead;

    }

}