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SoundLevelMeter Class
Sound level meter is a component that allows audio signal level to be viewed. The sound level meter draws a horizontal line across the middle of the screen from left to right. If the input sound level departs from zero, the line is deflected either upwards or downwards.
Inheritance Hierarchy

Namespace: Alvas.Audio
Assembly: Alvas.Audio (in Alvas.Audio.dll) Version: 2016.0.6173.41573
Syntax
public class SoundLevelMeter : Control

The SoundLevelMeter type exposes the following members.

Constructors
  NameDescription
Public methodSoundLevelMeter
Initializes a new instance of the SoundLevelMeter class
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Methods
  NameDescription
Public methodBeginInvoke(Delegate)
Executes the specified delegate asynchronously on the thread that the control's underlying handle was created on.
(Inherited from Control.)
Public methodBeginInvoke(Delegate, Object)
Executes the specified delegate asynchronously with the specified arguments, on the thread that the control's underlying handle was created on.
(Inherited from Control.)
Public methodBringToFront
Brings the control to the front of the z-order.
(Inherited from Control.)
Public methodContains
Retrieves a value indicating whether the specified control is a child of the control.
(Inherited from Control.)
Public methodCreateControl
Forces the creation of the visible control, including the creation of the handle and any visible child controls.
(Inherited from Control.)
Public methodCreateGraphics
Creates the Graphics for the control.
(Inherited from Control.)
Public methodCreateObjRef
Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.
(Inherited from MarshalByRefObject.)
Public methodDispose
Releases all resources used by the Component.
(Inherited from Component.)
Public methodDoDragDrop
Begins a drag-and-drop operation.
(Inherited from Control.)
Public methodDrawToBitmap
Supports rendering to the specified bitmap.
(Inherited from Control.)
Public methodEndInvoke
Retrieves the return value of the asynchronous operation represented by the IAsyncResult passed.
(Inherited from Control.)
Public methodEquals
Determines whether the specified Object is equal to the current Object.
(Inherited from Object.)
Public methodFindForm
Retrieves the form that the control is on.
(Inherited from Control.)
Public methodFocus
Sets input focus to the control.
(Inherited from Control.)
Public methodGetChildAtPoint(Point)
Retrieves the child control that is located at the specified coordinates.
(Inherited from Control.)
Public methodGetChildAtPoint(Point, GetChildAtPointSkip)
Retrieves the child control that is located at the specified coordinates, specifying whether to ignore child controls of a certain type.
(Inherited from Control.)
Public methodGetContainerControl
Returns the next ContainerControl up the control's chain of parent controls.
(Inherited from Control.)
Public methodGetHashCode
Serves as a hash function for a particular type.
(Inherited from Object.)
Public methodGetLifetimeService
Retrieves the current lifetime service object that controls the lifetime policy for this instance.
(Inherited from MarshalByRefObject.)
Public methodGetNextControl
Retrieves the next control forward or back in the tab order of child controls.
(Inherited from Control.)
Public methodGetPreferredSize
Retrieves the size of a rectangular area into which a control can be fitted.
(Inherited from Control.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Public methodHide
Conceals the control from the user.
(Inherited from Control.)
Public methodInitializeLifetimeService
Obtains a lifetime service object to control the lifetime policy for this instance.
(Inherited from MarshalByRefObject.)
Public methodInvalidate
Invalidates the entire surface of the control and causes the control to be redrawn.
(Inherited from Control.)
Public methodInvalidate(Region)
Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control.
(Inherited from Control.)
Public methodInvalidate(Boolean)
Invalidates a specific region of the control and causes a paint message to be sent to the control. Optionally, invalidates the child controls assigned to the control.
(Inherited from Control.)
Public methodInvalidate(Rectangle)
Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control.
(Inherited from Control.)
Public methodInvalidate(Region, Boolean)
Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. Optionally, invalidates the child controls assigned to the control.
(Inherited from Control.)
Public methodInvalidate(Rectangle, Boolean)
Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. Optionally, invalidates the child controls assigned to the control.
(Inherited from Control.)
Public methodInvoke(Delegate)
Executes the specified delegate on the thread that owns the control's underlying window handle.
(Inherited from Control.)
Public methodInvoke(Delegate, Object)
Executes the specified delegate, on the thread that owns the control's underlying window handle, with the specified list of arguments.
(Inherited from Control.)
Public methodPerformLayout
Forces the control to apply layout logic to all its child controls.
(Inherited from Control.)
Public methodPerformLayout(Control, String)
Forces the control to apply layout logic to all its child controls.
(Inherited from Control.)
Public methodPointToClient
Computes the location of the specified screen point into client coordinates.
(Inherited from Control.)
Public methodPointToScreen
Computes the location of the specified client point into screen coordinates.
(Inherited from Control.)
Public methodPreProcessControlMessage
Preprocesses keyboard or input messages within the message loop before they are dispatched.
(Inherited from Control.)
Public methodPreProcessMessage
Preprocesses keyboard or input messages within the message loop before they are dispatched.
(Inherited from Control.)
Public methodRectangleToClient
Computes the size and location of the specified screen rectangle in client coordinates.
(Inherited from Control.)
Public methodRectangleToScreen
Computes the size and location of the specified client rectangle in screen coordinates.
(Inherited from Control.)
Public methodRefresh
Forces the control to invalidate its client area and immediately redraw itself and any child controls.
(Inherited from Control.)
Public methodResetBackColor
Resets the BackColor property to its default value.
(Inherited from Control.)
Public methodResetBindings
Causes a control bound to the BindingSource to reread all the items in the list and refresh their displayed values.
(Inherited from Control.)
Public methodResetCursor
Resets the Cursor property to its default value.
(Inherited from Control.)
Public methodResetFont
Resets the Font property to its default value.
(Inherited from Control.)
Public methodResetForeColor
Resets the ForeColor property to its default value.
(Inherited from Control.)
Public methodResetImeMode
Resets the ImeMode property to its default value.
(Inherited from Control.)
Public methodResetRightToLeft
Resets the RightToLeft property to its default value.
(Inherited from Control.)
Public methodResetText
Resets the Text property to its default value.
(Inherited from Control.)
Public methodResumeLayout
Resumes usual layout logic.
(Inherited from Control.)
Public methodResumeLayout(Boolean)
Resumes usual layout logic, optionally forcing an immediate layout of pending layout requests.
(Inherited from Control.)
Public methodScale(Single) Obsolete.
Scales the control and any child controls.
(Inherited from Control.)
Public methodScale(SizeF)
Scales the control and all child controls by the specified scaling factor.
(Inherited from Control.)
Public methodScale(Single, Single) Obsolete.
Scales the entire control and any child controls.
(Inherited from Control.)
Public methodSelect
Activates the control.
(Inherited from Control.)
Public methodSelectNextControl
Activates the next control.
(Inherited from Control.)
Public methodSendToBack
Sends the control to the back of the z-order.
(Inherited from Control.)
Public methodSetBounds(Int32, Int32, Int32, Int32)
Sets the bounds of the control to the specified location and size.
(Inherited from Control.)
Public methodSetBounds(Int32, Int32, Int32, Int32, BoundsSpecified)
Sets the specified bounds of the control to the specified location and size.
(Inherited from Control.)
Public methodShow
Displays the control to the user.
(Inherited from Control.)
Public methodSuspendLayout
Temporarily suspends the layout logic for the control.
(Inherited from Control.)
Public methodToString
Returns a String containing the name of the Component, if any. This method should not be overridden.
(Inherited from Component.)
Public methodUpdate
Causes the control to redraw the invalidated regions within its client area.
(Inherited from Control.)
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Properties
  NameDescription
Public propertyAccessibilityObject
Gets the AccessibleObject assigned to the control.
(Inherited from Control.)
Public propertyAccessibleDefaultActionDescription
Gets or sets the default action description of the control for use by accessibility client applications.
(Inherited from Control.)
Public propertyAccessibleDescription
Gets or sets the description of the control used by accessibility client applications.
(Inherited from Control.)
Public propertyAccessibleName
Gets or sets the name of the control used by accessibility client applications.
(Inherited from Control.)
Public propertyAccessibleRole
Gets or sets the accessible role of the control
(Inherited from Control.)
Public propertyAllowDrop
Gets or sets a value indicating whether the control can accept data that the user drags onto it.
(Inherited from Control.)
Public propertyAnchor
Gets or sets the edges of the container to which a control is bound and determines how a control is resized with its parent.
(Inherited from Control.)
Public propertyAutoScrollOffset
Gets or sets where this control is scrolled to in ScrollControlIntoView(Control).
(Inherited from Control.)
Public propertyAutoSize
This property is not relevant for this class.
(Inherited from Control.)
Public propertyBackColor
Gets or sets the background color for the control.
(Inherited from Control.)
Public propertyBackgroundImage
Gets or sets the background image displayed in the control.
(Inherited from Control.)
Public propertyBackgroundImageLayout
Gets or sets the background image layout as defined in the ImageLayout enumeration.
(Inherited from Control.)
Public propertyBindingContext
Gets or sets the BindingContext for the control.
(Inherited from Control.)
Public propertyBorderStyle
Gets or sets the border style for the control.
Public propertyBottom
Gets the distance, in pixels, between the bottom edge of the control and the top edge of its container's client area.
(Inherited from Control.)
Public propertyBounds
Gets or sets the size and location of the control including its nonclient elements, in pixels, relative to the parent control.
(Inherited from Control.)
Public propertyCanFocus
Gets a value indicating whether the control can receive focus.
(Inherited from Control.)
Public propertyCanSelect
Gets a value indicating whether the control can be selected.
(Inherited from Control.)
Public propertyCapture
Gets or sets a value indicating whether the control has captured the mouse.
(Inherited from Control.)
Public propertyCausesValidation
Gets or sets a value indicating whether the control causes validation to be performed on any controls that require validation when it receives focus.
(Inherited from Control.)
Public propertyClientRectangle
Gets the rectangle that represents the client area of the control.
(Inherited from Control.)
Public propertyClientSize
Gets or sets the height and width of the client area of the control.
(Inherited from Control.)
Public propertyCompanyName
Gets the name of the company or creator of the application containing the control.
(Inherited from Control.)
Public propertyContainer
Gets the IContainer that contains the Component.
(Inherited from Component.)
Public propertyContainsFocus
Gets a value indicating whether the control, or one of its child controls, currently has the input focus.
(Inherited from Control.)
Public propertyContextMenu
Gets or sets the shortcut menu associated with the control.
(Inherited from Control.)
Public propertyContextMenuStrip
Gets or sets the ContextMenuStrip associated with this control.
(Inherited from Control.)
Public propertyControls
Gets the collection of controls contained within the control.
(Inherited from Control.)
Public propertyCreated
Gets a value indicating whether the control has been created.
(Inherited from Control.)
Public propertyCursor
Gets or sets the cursor that is displayed when the mouse pointer is over the control.
(Inherited from Control.)
Public propertyData
Audio data array for the SoundLevelMeter.
Public propertyDataBindings
Gets the data bindings for the control.
(Inherited from Control.)
Public propertyDisplayRectangle
Gets the rectangle that represents the display area of the control.
(Inherited from Control.)
Public propertyDisposing
Gets a value indicating whether the base Control class is in the process of disposing.
(Inherited from Control.)
Public propertyDock
Gets or sets which control borders are docked to its parent control and determines how a control is resized with its parent.
(Inherited from Control.)
Public propertyEnabled
Gets or sets a value indicating whether the control can respond to user interaction.
(Inherited from Control.)
Public propertyFocused
Gets a value indicating whether the control has input focus.
(Inherited from Control.)
Public propertyFont
Gets or sets the font of the text displayed by the control.
(Inherited from Control.)
Public propertyForeColor
Gets or sets the foreground color of the control.
(Inherited from Control.)
Public propertyHandle
Gets the window handle that the control is bound to.
(Inherited from Control.)
Public propertyHasChildren
Gets a value indicating whether the control contains one or more child controls.
(Inherited from Control.)
Public propertyHeight
Gets or sets the height of the control.
(Inherited from Control.)
Public propertyImeMode
Gets or sets the Input Method Editor (IME) mode of the control.
(Inherited from Control.)
Public propertyInvokeRequired
Gets a value indicating whether the caller must call an invoke method when making method calls to the control because the caller is on a different thread than the one the control was created on.
(Inherited from Control.)
Public propertyIsAccessible
Gets or sets a value indicating whether the control is visible to accessibility applications.
(Inherited from Control.)
Public propertyIsDisposed
Gets a value indicating whether the control has been disposed of.
(Inherited from Control.)
Public propertyIsHandleCreated
Gets a value indicating whether the control has a handle associated with it.
(Inherited from Control.)
Public propertyIsMirrored
Gets a value indicating whether the control is mirrored.
(Inherited from Control.)
Public propertyLayoutEngine
Gets a cached instance of the control's layout engine.
(Inherited from Control.)
Public propertyLeft
Gets or sets the distance, in pixels, between the left edge of the control and the left edge of its container's client area.
(Inherited from Control.)
Public propertyLocation
Gets or sets the coordinates of the upper-left corner of the control relative to the upper-left corner of its container.
(Inherited from Control.)
Public propertyMargin
Gets or sets the space between controls.
(Inherited from Control.)
Public propertyMaximumSize
Gets or sets the size that is the upper limit that GetPreferredSize(Size) can specify.
(Inherited from Control.)
Public propertyMinimumSize
Gets or sets the size that is the lower limit that GetPreferredSize(Size) can specify.
(Inherited from Control.)
Public propertyName
Gets or sets the name of the control.
(Inherited from Control.)
Public propertyOwnerDraw
Gets or sets a value indicating whether the control is drawn by itself or by the code that you provide.
Public propertyPadding
Gets or sets padding within the control.
(Inherited from Control.)
Public propertyParent
Gets or sets the parent container of the control.
(Inherited from Control.)
Public propertyPreferredSize
Gets the size of a rectangular area into which the control can fit.
(Inherited from Control.)
Public propertyProductName
Gets the product name of the assembly containing the control.
(Inherited from Control.)
Public propertyProductVersion
Gets the version of the assembly containing the control.
(Inherited from Control.)
Public propertyRecreatingHandle
Gets a value indicating whether the control is currently re-creating its handle.
(Inherited from Control.)
Public propertyRegion
Gets or sets the window region associated with the control.
(Inherited from Control.)
Public propertyRight
Gets the distance, in pixels, between the right edge of the control and the left edge of its container's client area.
(Inherited from Control.)
Public propertyRightToLeft
Gets or sets a value indicating whether control's elements are aligned to support locales using right-to-left fonts.
(Inherited from Control.)
Public propertySite
Gets or sets the site of the control.
(Inherited from Control.)
Public propertySize
Gets or sets the height and width of the control.
(Inherited from Control.)
Public propertyTabIndex
Gets or sets the tab order of the control within its container.
(Inherited from Control.)
Public propertyTabStop
Gets or sets a value indicating whether the user can give the focus to this control using the TAB key.
(Inherited from Control.)
Public propertyTag
Gets or sets the object that contains data about the control.
(Inherited from Control.)
Public propertyText
Gets or sets the text associated with this control.
(Inherited from Control.)
Public propertyTop
Gets or sets the distance, in pixels, between the top edge of the control and the top edge of its container's client area.
(Inherited from Control.)
Public propertyTopLevelControl
Gets the parent control that is not parented by another Windows Forms control. Typically, this is the outermost Form that the control is contained in.
(Inherited from Control.)
Public propertyUseWaitCursor
Gets or sets a value indicating whether to use the wait cursor for the current control and all child controls.
(Inherited from Control.)
Public propertyVisible
Gets or sets a value indicating whether the control and all its child controls are displayed.
(Inherited from Control.)
Public propertyWidth
Gets or sets the width of the control.
(Inherited from Control.)
Public propertyWindowTarget
This property is not relevant for this class.
(Inherited from Control.)
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Events
  NameDescription
Public eventAutoSizeChanged
This event is not relevant for this class.
(Inherited from Control.)
Public eventBackColorChanged
Occurs when the value of the BackColor property changes.
(Inherited from Control.)
Public eventBackgroundImageChanged
Occurs when the value of the BackgroundImage property changes.
(Inherited from Control.)
Public eventBackgroundImageLayoutChanged
Occurs when the BackgroundImageLayout property changes.
(Inherited from Control.)
Public eventBindingContextChanged
Occurs when the value of the BindingContext property changes.
(Inherited from Control.)
Public eventCausesValidationChanged
Occurs when the value of the CausesValidation property changes.
(Inherited from Control.)
Public eventChangeUICues
Occurs when the focus or keyboard user interface (UI) cues change.
(Inherited from Control.)
Public eventClick
Occurs when the control is clicked.
(Inherited from Control.)
Public eventClientSizeChanged
Occurs when the value of the ClientSize property changes.
(Inherited from Control.)
Public eventContextMenuChanged
Occurs when the value of the ContextMenu property changes.
(Inherited from Control.)
Public eventContextMenuStripChanged
Occurs when the value of the ContextMenuStrip property changes.
(Inherited from Control.)
Public eventControlAdded (Inherited from Control.)
Public eventControlRemoved (Inherited from Control.)
Public eventCursorChanged
Occurs when the value of the Cursor property changes.
(Inherited from Control.)
Public eventDisposed
Occurs when the component is disposed by a call to the Dispose method.
(Inherited from Component.)
Public eventDockChanged
Occurs when the value of the Dock property changes.
(Inherited from Control.)
Public eventDoubleClick
Occurs when the control is double-clicked.
(Inherited from Control.)
Public eventDragDrop
Occurs when a drag-and-drop operation is completed.
(Inherited from Control.)
Public eventDragEnter
Occurs when an object is dragged into the control's bounds.
(Inherited from Control.)
Public eventDragLeave
Occurs when an object is dragged out of the control's bounds.
(Inherited from Control.)
Public eventDragOver
Occurs when an object is dragged over the control's bounds.
(Inherited from Control.)
Public eventEnabledChanged
Occurs when the Enabled property value has changed.
(Inherited from Control.)
Public eventEnter
Occurs when the control is entered.
(Inherited from Control.)
Public eventFontChanged
Occurs when the Font property value changes.
(Inherited from Control.)
Public eventForeColorChanged
Occurs when the ForeColor property value changes.
(Inherited from Control.)
Public eventGiveFeedback
Occurs during a drag operation.
(Inherited from Control.)
Public eventGotFocus
Occurs when the control receives focus.
(Inherited from Control.)
Public eventHandleCreated
Occurs when a handle is created for the control.
(Inherited from Control.)
Public eventHandleDestroyed
Occurs when the control's handle is in the process of being destroyed.
(Inherited from Control.)
Public eventHelpRequested
Occurs when the user requests help for a control.
(Inherited from Control.)
Public eventImeModeChanged
Occurs when the ImeMode property has changed.
(Inherited from Control.)
Public eventInvalidated
Occurs when a control's display requires redrawing.
(Inherited from Control.)
Public eventKeyDown
Occurs when a key is pressed while the control has focus.
(Inherited from Control.)
Public eventKeyPress
Occurs when a key is pressed while the control has focus.
(Inherited from Control.)
Public eventKeyUp
Occurs when a key is released while the control has focus.
(Inherited from Control.)
Public eventLayout
Occurs when a control should reposition its child controls.
(Inherited from Control.)
Public eventLeave
Occurs when the input focus leaves the control.
(Inherited from Control.)
Public eventLocationChanged
Occurs when the Location property value has changed.
(Inherited from Control.)
Public eventLostFocus
Occurs when the control loses focus.
(Inherited from Control.)
Public eventMarginChanged
Occurs when the control's margin changes.
(Inherited from Control.)
Public eventMouseCaptureChanged
Occurs when the control loses mouse capture.
(Inherited from Control.)
Public eventMouseClick
Occurs when the control is clicked by the mouse.
(Inherited from Control.)
Public eventMouseDoubleClick
Occurs when the control is double clicked by the mouse.
(Inherited from Control.)
Public eventMouseDown
Occurs when the mouse pointer is over the control and a mouse button is pressed.
(Inherited from Control.)
Public eventMouseEnter
Occurs when the mouse pointer enters the control.
(Inherited from Control.)
Public eventMouseHover
Occurs when the mouse pointer rests on the control.
(Inherited from Control.)
Public eventMouseLeave
Occurs when the mouse pointer leaves the control.
(Inherited from Control.)
Public eventMouseMove
Occurs when the mouse pointer is moved over the control.
(Inherited from Control.)
Public eventMouseUp
Occurs when the mouse pointer is over the control and a mouse button is released.
(Inherited from Control.)
Public eventMouseWheel
Occurs when the mouse wheel moves while the control has focus.
(Inherited from Control.)
Public eventMove
Occurs when the control is moved.
(Inherited from Control.)
Public eventPaddingChanged
Occurs when the control's padding changes.
(Inherited from Control.)
Public eventPaint
Occurs when the control is redrawn.
(Inherited from Control.)
Public eventParentChanged
Occurs when the Parent property value changes.
(Inherited from Control.)
Public eventPreviewKeyDown
Occurs before the KeyDown event when a key is pressed while focus is on this control.
(Inherited from Control.)
Public eventQueryAccessibilityHelp
Occurs when AccessibleObject is providing help to accessibility applications.
(Inherited from Control.)
Public eventQueryContinueDrag
Occurs during a drag-and-drop operation and enables the drag source to determine whether the drag-and-drop operation should be canceled.
(Inherited from Control.)
Public eventRegionChanged
Occurs when the value of the Region property changes.
(Inherited from Control.)
Public eventResize
Occurs when the control is resized.
(Inherited from Control.)
Public eventRightToLeftChanged
Occurs when the RightToLeft property value changes.
(Inherited from Control.)
Public eventSizeChanged
Occurs when the Size property value changes.
(Inherited from Control.)
Public eventStyleChanged
Occurs when the control style changes.
(Inherited from Control.)
Public eventSystemColorsChanged
Occurs when the system colors change.
(Inherited from Control.)
Public eventTabIndexChanged
Occurs when the TabIndex property value changes.
(Inherited from Control.)
Public eventTabStopChanged
Occurs when the TabStop property value changes.
(Inherited from Control.)
Public eventTextChanged
Occurs when the Text property value changes.
(Inherited from Control.)
Public eventValidated
Occurs when the control is finished validating.
(Inherited from Control.)
Public eventValidating
Occurs when the control is validating.
(Inherited from Control.)
Public eventVisibleChanged
Occurs when the Visible property value changes.
(Inherited from Control.)
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Examples
This example shows simple using of SoundLevelMeter class.
SoundLevelMeter vum = new SoundLevelMeter();
WaveReader wr = new WaveReader(File.OpenRead("in.wav"));
IntPtr format = wr.ReadFormat();
byte[] data = wr.ReadData();
wr.Close();
short[] buffer = AudioCompressionManager.RecalculateData(format, data, vum.ClientRectangle.Width);
vum.Data = buffer;
See Also