EQ均衡器的实现（VB.NET）

大元帅

使用VB.NET与DirectSound托管，实现EQ均衡器的效果。
代码，比较长。。主要是那几个TrackBar。
Imports Microsoft.DirectX.DirectSound
Imports Microsoft.DirectX

Public Class Form1
    Inherits System.Windows.Forms.Form

    Dim Dev As Device
    Dim SB As SecondaryBuffer

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写 dispose 以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents Label5 As System.Windows.Forms.Label
    Friend WithEvents Label6 As System.Windows.Forms.Label
    Friend WithEvents Label7 As System.Windows.Forms.Label
    Friend WithEvents Label8 As System.Windows.Forms.Label
    Friend WithEvents Label9 As System.Windows.Forms.Label
    Friend WithEvents Label10 As System.Windows.Forms.Label
    Friend WithEvents Label11 As System.Windows.Forms.Label
    Friend WithEvents Label12 As System.Windows.Forms.Label
    Friend WithEvents Label13 As System.Windows.Forms.Label
    Friend WithEvents TrackBar1 As System.Windows.Forms.TrackBar
    Friend WithEvents TrackBar2 As System.Windows.Forms.TrackBar
    Friend WithEvents TrackBar3 As System.Windows.Forms.TrackBar
    Friend WithEvents TrackBar4 As System.Windows.Forms.TrackBar
    Friend WithEvents TrackBar5 As System.Windows.Forms.TrackBar
    Friend WithEvents TrackBar6 As System.Windows.Forms.TrackBar
    Friend WithEvents TrackBar7 As System.Windows.Forms.TrackBar
    Friend WithEvents TrackBar8 As System.Windows.Forms.TrackBar
    Friend WithEvents TrackBar9 As System.Windows.Forms.TrackBar
    Friend WithEvents TrackBar10 As System.Windows.Forms.TrackBar
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.Label4 = New System.Windows.Forms.Label
        Me.Label5 = New System.Windows.Forms.Label
        Me.Label6 = New System.Windows.Forms.Label
        Me.Label7 = New System.Windows.Forms.Label
        Me.Label8 = New System.Windows.Forms.Label
        Me.Label9 = New System.Windows.Forms.Label
        Me.Label10 = New System.Windows.Forms.Label
        Me.Label11 = New System.Windows.Forms.Label
        Me.Label12 = New System.Windows.Forms.Label
        Me.Label13 = New System.Windows.Forms.Label
        Me.TrackBar1 = New System.Windows.Forms.TrackBar
        Me.TrackBar2 = New System.Windows.Forms.TrackBar
        Me.TrackBar3 = New System.Windows.Forms.TrackBar
        Me.TrackBar4 = New System.Windows.Forms.TrackBar
        Me.TrackBar5 = New System.Windows.Forms.TrackBar
        Me.TrackBar6 = New System.Windows.Forms.TrackBar
        Me.TrackBar7 = New System.Windows.Forms.TrackBar
        Me.TrackBar8 = New System.Windows.Forms.TrackBar
        Me.TrackBar9 = New System.Windows.Forms.TrackBar
        Me.TrackBar10 = New System.Windows.Forms.TrackBar
        CType(Me.TrackBar1, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.TrackBar2, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.TrackBar3, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.TrackBar4, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.TrackBar5, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.TrackBar6, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.TrackBar7, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.TrackBar8, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.TrackBar9, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.TrackBar10, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(8, 8)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(32, 16)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "12dB"
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(8, 64)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(24, 16)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "0dB"
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(8, 120)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(40, 16)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "-12dB"
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(56, 144)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(24, 16)
        Me.Label4.TabIndex = 3
        Me.Label4.Text = "100"
        '
        'Label5
        '
        Me.Label5.Location = New System.Drawing.Point(96, 144)
        Me.Label5.Name = "Label5"
        Me.Label5.Size = New System.Drawing.Size(24, 16)
        Me.Label5.TabIndex = 4
        Me.Label5.Text = "200"
        '
        'Label6
        '
        Me.Label6.Location = New System.Drawing.Point(136, 144)
        Me.Label6.Name = "Label6"
        Me.Label6.Size = New System.Drawing.Size(24, 16)
        Me.Label6.TabIndex = 5
        Me.Label6.Text = "400"
        '
        'Label7
        '
        Me.Label7.Location = New System.Drawing.Point(176, 144)
        Me.Label7.Name = "Label7"
        Me.Label7.Size = New System.Drawing.Size(24, 16)
        Me.Label7.TabIndex = 6
        Me.Label7.Text = "600"
        '
        'Label8
        '
        Me.Label8.Location = New System.Drawing.Point(216, 144)
        Me.Label8.Name = "Label8"
        Me.Label8.Size = New System.Drawing.Size(24, 16)
        Me.Label8.TabIndex = 7
        Me.Label8.Text = "1k"
        '
        'Label9
        '
        Me.Label9.Location = New System.Drawing.Point(256, 144)
        Me.Label9.Name = "Label9"
        Me.Label9.Size = New System.Drawing.Size(24, 16)
        Me.Label9.TabIndex = 8
        Me.Label9.Text = "3k"
        '
        'Label10
        '
        Me.Label10.Location = New System.Drawing.Point(296, 144)
        Me.Label10.Name = "Label10"
        Me.Label10.Size = New System.Drawing.Size(24, 16)
        Me.Label10.TabIndex = 9
        Me.Label10.Text = "6k"
        '
        'Label11
        '
        Me.Label11.Location = New System.Drawing.Point(336, 144)
        Me.Label11.Name = "Label11"
        Me.Label11.Size = New System.Drawing.Size(24, 16)
        Me.Label11.TabIndex = 10
        Me.Label11.Text = "12k"
        '
        'Label12
        '
        Me.Label12.Location = New System.Drawing.Point(376, 144)
        Me.Label12.Name = "Label12"
        Me.Label12.Size = New System.Drawing.Size(24, 16)
        Me.Label12.TabIndex = 11
        Me.Label12.Text = "14k"
        '
        'Label13
        '
        Me.Label13.Location = New System.Drawing.Point(416, 144)
        Me.Label13.Name = "Label13"
        Me.Label13.Size = New System.Drawing.Size(24, 16)
        Me.Label13.TabIndex = 12
        Me.Label13.Text = "16k"
        '
        'TrackBar1
        '
        Me.TrackBar1.Location = New System.Drawing.Point(56, 0)
        Me.TrackBar1.Maximum = 12
        Me.TrackBar1.Minimum = -12
        Me.TrackBar1.Name = "TrackBar1"
        Me.TrackBar1.Orientation = System.Windows.Forms.Orientation.Vertical
        Me.TrackBar1.Size = New System.Drawing.Size(45, 136)
        Me.TrackBar1.TabIndex = 13
        Me.TrackBar1.TickStyle = System.Windows.Forms.TickStyle.None
        '
        'TrackBar2
        '
        Me.TrackBar2.Location = New System.Drawing.Point(96, 0)
        Me.TrackBar2.Maximum = 12
        Me.TrackBar2.Minimum = -12
        Me.TrackBar2.Name = "TrackBar2"
        Me.TrackBar2.Orientation = System.Windows.Forms.Orientation.Vertical
        Me.TrackBar2.Size = New System.Drawing.Size(45, 136)
        Me.TrackBar2.TabIndex = 14
        Me.TrackBar2.TickStyle = System.Windows.Forms.TickStyle.None
        '
        'TrackBar3
        '
        Me.TrackBar3.Location = New System.Drawing.Point(136, 0)
        Me.TrackBar3.Maximum = 12
        Me.TrackBar3.Minimum = -12
        Me.TrackBar3.Name = "TrackBar3"
        Me.TrackBar3.Orientation = System.Windows.Forms.Orientation.Vertical
        Me.TrackBar3.Size = New System.Drawing.Size(45, 136)
        Me.TrackBar3.TabIndex = 15
        Me.TrackBar3.TickStyle = System.Windows.Forms.TickStyle.None
        '
        'TrackBar4
        '
        Me.TrackBar4.Location = New System.Drawing.Point(176, 0)
        Me.TrackBar4.Maximum = 12
        Me.TrackBar4.Minimum = -12
        Me.TrackBar4.Name = "TrackBar4"
        Me.TrackBar4.Orientation = System.Windows.Forms.Orientation.Vertical
        Me.TrackBar4.Size = New System.Drawing.Size(45, 136)
        Me.TrackBar4.TabIndex = 16
        Me.TrackBar4.TickStyle = System.Windows.Forms.TickStyle.None
        '
        'TrackBar5
        '
        Me.TrackBar5.Location = New System.Drawing.Point(216, 0)
        Me.TrackBar5.Maximum = 12
        Me.TrackBar5.Minimum = -12
        Me.TrackBar5.Name = "TrackBar5"
        Me.TrackBar5.Orientation = System.Windows.Forms.Orientation.Vertical
        Me.TrackBar5.Size = New System.Drawing.Size(45, 136)
        Me.TrackBar5.TabIndex = 17
        Me.TrackBar5.TickStyle = System.Windows.Forms.TickStyle.None
        '
        'TrackBar6
        '
        Me.TrackBar6.Location = New System.Drawing.Point(256, 0)
        Me.TrackBar6.Maximum = 12
        Me.TrackBar6.Minimum = -12
        Me.TrackBar6.Name = "TrackBar6"
        Me.TrackBar6.Orientation = System.Windows.Forms.Orientation.Vertical
        Me.TrackBar6.Size = New System.Drawing.Size(45, 136)
        Me.TrackBar6.TabIndex = 18
        Me.TrackBar6.TickStyle = System.Windows.Forms.TickStyle.None
        '
        'TrackBar7
        '
        Me.TrackBar7.Location = New System.Drawing.Point(296, 0)
        Me.TrackBar7.Maximum = 12
        Me.TrackBar7.Minimum = -12
        Me.TrackBar7.Name = "TrackBar7"
        Me.TrackBar7.Orientation = System.Windows.Forms.Orientation.Vertical
        Me.TrackBar7.Size = New System.Drawing.Size(45, 136)
        Me.TrackBar7.TabIndex = 19
        Me.TrackBar7.TickStyle = System.Windows.Forms.TickStyle.None
        '
        'TrackBar8
        '
        Me.TrackBar8.Location = New System.Drawing.Point(336, 0)
        Me.TrackBar8.Maximum = 12
        Me.TrackBar8.Minimum = -12
        Me.TrackBar8.Name = "TrackBar8"
        Me.TrackBar8.Orientation = System.Windows.Forms.Orientation.Vertical
        Me.TrackBar8.Size = New System.Drawing.Size(45, 136)
        Me.TrackBar8.TabIndex = 20
        Me.TrackBar8.TickStyle = System.Windows.Forms.TickStyle.None
        '
        'TrackBar9
        '
        Me.TrackBar9.Location = New System.Drawing.Point(376, 0)
        Me.TrackBar9.Maximum = 12
        Me.TrackBar9.Minimum = -12
        Me.TrackBar9.Name = "TrackBar9"
        Me.TrackBar9.Orientation = System.Windows.Forms.Orientation.Vertical
        Me.TrackBar9.Size = New System.Drawing.Size(45, 136)
        Me.TrackBar9.TabIndex = 21
        Me.TrackBar9.TickStyle = System.Windows.Forms.TickStyle.None
        '
        'TrackBar10
        '
        Me.TrackBar10.Location = New System.Drawing.Point(416, 0)
        Me.TrackBar10.Maximum = 12
        Me.TrackBar10.Minimum = -12
        Me.TrackBar10.Name = "TrackBar10"
        Me.TrackBar10.Orientation = System.Windows.Forms.Orientation.Vertical
        Me.TrackBar10.Size = New System.Drawing.Size(45, 136)
        Me.TrackBar10.TabIndex = 22
        Me.TrackBar10.TickStyle = System.Windows.Forms.TickStyle.None
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(448, 166)
        Me.Controls.Add(Me.TrackBar10)
        Me.Controls.Add(Me.TrackBar9)
        Me.Controls.Add(Me.TrackBar8)
        Me.Controls.Add(Me.TrackBar7)
        Me.Controls.Add(Me.TrackBar6)
        Me.Controls.Add(Me.TrackBar5)
        Me.Controls.Add(Me.TrackBar4)
        Me.Controls.Add(Me.TrackBar3)
        Me.Controls.Add(Me.TrackBar2)
        Me.Controls.Add(Me.TrackBar1)
        Me.Controls.Add(Me.Label13)
        Me.Controls.Add(Me.Label12)
        Me.Controls.Add(Me.Label11)
        Me.Controls.Add(Me.Label10)
        Me.Controls.Add(Me.Label9)
        Me.Controls.Add(Me.Label8)
        Me.Controls.Add(Me.Label7)
        Me.Controls.Add(Me.Label6)
        Me.Controls.Add(Me.Label5)
        Me.Controls.Add(Me.Label4)
        Me.Controls.Add(Me.Label3)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.MaximizeBox = False
        Me.Name = "Form1"
        Me.Text = "EQ均衡器"
        CType(Me.TrackBar1, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.TrackBar2, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.TrackBar3, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.TrackBar4, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.TrackBar5, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.TrackBar6, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.TrackBar7, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.TrackBar8, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.TrackBar9, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.TrackBar10, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dev = New Device
        Dev.SetCooperativeLevel(Me, CooperativeLevel.Normal)
        SB = New SecondaryBuffer("D:\魔兽争霸2\DRIVERS\DIGTEST.wav", Dev)
        Dim EDes(9) As EffectDescription
        For i As Integer = 0 To 9
            '声明为EQ特效
            EDes(i).GuidEffectClass = DSoundHelper.StandardParamEqGuid
        Next
        SB.SetEffects(EDes)
        '初始化频率表
        Dim FreqDur() As Integer = {100, 200, 400, 600, 1000, 3000, 6000, 12000, 14000, 16000}
        '初始化特效的中心频率和扩散宽度
        For i As Integer = 0 To 9
            Dim EQEffect As ParamEqEffect
            Dim EffectsOfEQ As EffectsParamEq
            EQEffect = SB.GetEffects(i)
            EffectsOfEQ = EQEffect.AllParameters
            '设置中心频率
            EffectsOfEQ.Center = FreqDur(i)
            '设置扩散范围
            EffectsOfEQ.Bandwidth = 36
            EQEffect.AllParameters = EffectsOfEQ
        Next
        '初始化完毕，播放声音
        SB.Play(0, BufferPlayFlags.Looping)
    End Sub

    Private Sub ChangeGain(ByVal FreqIndex As Integer, ByVal Value As Integer)
        Dim EQEffect As ParamEqEffect
        Dim EffectsOfEQ As EffectsParamEq
        EQEffect = SB.GetEffects(FreqIndex)
        EffectsOfEQ = EQEffect.AllParameters
        '设置强度
        EffectsOfEQ.Gain = Value
        EQEffect.AllParameters = EffectsOfEQ
    End Sub

    Private Sub TrackBar1_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar1.ValueChanged
        ChangeGain(0, TrackBar1.Value)
    End Sub

    Private Sub TrackBar2_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar2.ValueChanged
        ChangeGain(1, TrackBar2.Value)
    End Sub

    Private Sub TrackBar3_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar3.ValueChanged
        ChangeGain(2, TrackBar3.Value)
    End Sub

    Private Sub TrackBar4_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar4.ValueChanged
        ChangeGain(3, TrackBar4.Value)
    End Sub

    Private Sub TrackBar5_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar5.ValueChanged
        ChangeGain(4, TrackBar5.Value)
    End Sub

    Private Sub TrackBar6_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar6.ValueChanged
        ChangeGain(5, TrackBar6.Value)
    End Sub

    Private Sub TrackBar7_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar7.ValueChanged
        ChangeGain(6, TrackBar7.Value)
    End Sub

    Private Sub TrackBar8_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar8.ValueChanged
        ChangeGain(7, TrackBar8.Value)
    End Sub

    Private Sub TrackBar9_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar9.ValueChanged
        ChangeGain(8, TrackBar9.Value)
    End Sub

    Private Sub TrackBar10_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar10.ValueChanged
        ChangeGain(9, TrackBar10.Value)
    End Sub
End Class

psic

很不错啊，支持！！！

EziaSolsky

写那么多，辛苦了

系统崩溃

SecondaryBuffer的重载方式我只调通了前两种

大元帅

严格地说应该要设置ControlEffect为True的，开始写的时候太急了~测试的时候居然通过~~

instemast

不错但是,界面的代码就不必写了把

instemast

非.net的directsound可以吗

大元帅

用DX8和VB6是一样的原理