AudioLab is a set of components for fast audio processing with almost zero lines of code!

  • Capture
  • Process
  • Mix
  • Record
  • Analyze
  • Display

What can I build with AudioLab?

With AudioLab you can do just about anything imaginable: synthesize, capture, process, and analyze; mix, listen, visualize and more. 
Applications include:
  • Audio recording/playback.
  • Audio converters/re-encoders.
  • Jukeboxes, and Play Lists.
  • Audio broadcasting.
  • Connecting to audio streams.
  • Audio Editing, and analysis.
 Supports ASIO and VST 2.X and VST 3        




"Audio Stream Input/Output (ASIO) is a computer sound card driver protocol for digital audio specified by Steinberg, providing a low-latency and high fidelity interface between a software application and a computer's sound card."  (See  Quote from wikipedia.)




"Steinberg's Virtual Studio Technology (VST) is an interface for integrating software audio synthesizer and effect plugins with audio editors and hard-disk recording systems."  ( See  Quote from wikipedia.)


VST 3 Logo

"VST3 marks an important milestone in audio technology with a completely rewritten code base providing not only many new features but also the most stable and reliable VST platform ever."   ( See  )


Play recorded audio (see .NET or VCL tutorial):
Capture and record audio (see .NET or VCL tutorial): 
Capture, process and record audio:
Play or capture, analyze the audio, and display the results:
Mix different audio sources, record and listen to the result:
The latest version of AudioLab supports the older Win32 API ( WaveAPI, Audio ACM ), the newer DirectShow and DMO; and allows, if needed, any mixture of these technologies. The developer can choose the technology and can switch from one to the other at any moment: AudioLab hides the complexity of the chosen technology and makes the components look almost identical from the developer's perspective.
Here is the full list of the supported technologies:
Win32 API:
  • Audio Compression Manager ( ACM )
  • WaveAPI
  • DirectShow
  • Direct Media Objects ( DMO )
  • Intel MMX
  • Intel Performance Primitives ( IPP )
The library includes Wave Player, Wave Logger with compression capabilities, DirectShow Audio Player and Audio Logger, Signal and Noise generators, graphic equalizer, audio mixer, multiplier, convertors, spectrum component, channel splitter and merger, a Win32 API and DirectShow Audio Capture components, a Win32 API and DirectShow Audio Playback components. Three additional components from the SignalLab have been added to allow processing Spectrum Data.


Our component libraries come in 3 versions a VCL - Firemonkey version (for Delphi / C++ Builder / RAD Studio 10.3), an MFC compatible Visual C++ version, and a .NET 4.0 supporting Visual Studio 2005 to 2019.
The RAD Studio version is a set of native VCL and Firemonkey components of which all include now the powerful Mitov Runtime.
The Visual C++ version is a set of native Visual C++ classes (components).
The NET 4.0 (4.5 and higher compatible) version is a set of managed .NET components.  The .NET version has the same performance as the native versions, and supports all the Microsoft .NET languages including Visual Basic, C#, J#, F# and C++/CLI.
Due to the unique architecture of the OpenWire platform, the components are implemented the same way in Managed .NET and native Windows (32 and 64 bit) environments. The code to control a component from VB.NET, C++/CLI, C#, and J#, Visual C++ MFC, Delphi, and C++ Builder is almost identical. This allows the developers to migrate and share code between the different environments thus significantly improving the productivity.
OpenWire Libraries: for fast, complex data stream processing with almost zero lines of code!
Delphi Prism RAD Studio XE8 Delphi XE8 C++ Builder XE8 RAD Studio 10 Seattle Delphi 10 Seattle C++ Builder 10 Seattle RAD Studio 2010 C++ Builder 2010 Delphi 2010


ALSpectrum ALSpectrum

Multi channel audio spectrum

ALGoniometer ALGoniometer

Implements audio Goniometer

Audio Filters

ALAudioToReal ALAudioToReal Converts Wave Audio Data Buffers into Real Data Buffers
ALGenericFilter ALGenericFilter User defined filter for Audio data
ALAudioMixer ALAudioMixer Mixes two or more audio signals
ALAmplifier ALAmplifier Amplifies the audio
ALGraphicEqualizer ALGraphicEqualizer Graphic Audio Equalizer
ALDelayLine ALDelayLine Delays the signal
ALRemoveDC ALRemoveDC Removes the DC component from the audio signal
ALBandPass ALBandPass Performs a BandPass filter over the input signal
ALBandStop ALBandStop Performs a BandStop filter over the input signal
ALHighPass ALHighPass Performs a HighPass filter over the input signal
ALLowPass ALLowPass Performs a LowPass filter over the input signal
ALCombFilter ALCombFilter Performs a Comb filter over the input signal
ALDynamicRangeCompressor ALDynamicRangeCompressor Dynamically adjusts the amplification of the audio.

VST 2.X PlugIn host component


Use this component to host VST 3.X PlugIns

Audio combined input/output components

ALASIOAudioDevice ALASIOAudioDevice Captures from and sends audio to multiple channels of ASIO audio input/output device

Audio generators

ALGenericGen ALGenericGen User defined generator for Audio data
ALSignalGen ALSignalGen Tone, Triangle or Rectangle audio signal generator
ALRandomGen ALRandomGen Random audio signal generator
ALGaussGen ALGaussGen Gaussian random audio signal generator

Audio output components

ALAudioOut ALAudioOut Sends audio data to an audio output device
ALOggLogger ALOggLogger Records the audio to Ogg file
ALRawLogger ALRawLogger Records Raw (unformatted) audio data
ALWaveLogger ALWaveLogger Records the audio to Wave file.
ALLAVAudioLogger ALLAVAudioLogger

Records the audio to Audio file using FFMPeg/LibAV

Audio source components

ALOggPlayer ALOggPlayer Plays audio from Ogg file
ALWavePlayer ALWavePlayer

Plays audio from Wave file.

ALDSAudioPlayer ALDSAudioPlayer

Plays audio from Audio file using DirectShow.

ALAudioIn ALAudioIn Captures audio from an audio input device.
ALLAVAudioPlayer ALLAVAudioPlayer

Plays audio from Audio file using FFMPeg/LibAV


ALAudioDecompressor ALAudioDecompressor Decompresses compressed audio
ALAudioCompressor ALAudioCompressor Compresses audio
ALVorbisCompressor ALVorbisCompressor Compresses audio using Vorbis
ALSpeexDecompressor ALSpeexDecompressor Decompresses Speex compressed audio
ALSpeexCompressor ALSpeexCompressor Compresses audio using Vorbis
ALVorbisDecompressor ALVorbisDecompressor Decompresses Vorbis compressed audio
ALLAVAudioCompressor ALLAVAudioCompressor

Compresses audio using FFMPeg/LibAV

ALLAVAudioDecompressor ALLAVAudioDecompressor

Decompresses compressed audio using FFMPeg/LibAV


ALAudioToReal ALAudioToReal Converts Wave Audio Data Buffers into Real Data Buffers
ALRepack ALRepack Rearranges the samples into buffers with a specified size
ALRealToAudio ALRealToAudio Converts Real Data Buffers into Wave Audio Data Buffers
ALChannelSplitter ALChannelSplitter Splits the multi-channel audio into mono channels
ALChannelMerger ALChannelMerger Merges mono channels into a single multi-channel audio
SLChangeRange SLChangeRange Changes the output range of the signal
SLDetectLevels SLDetectLevels Detects levels in the input signal
SLPair SLPair Pairs multiple data buffers together
SLMakeStructure SLMakeStructure

Combines elements into a strucrure

SLSplitStructure SLSplitStructure

Splits a structure into multiple elements

Custom Filters

SLGenericRealValue SLGenericRealValue User defined filter for Real values
SLGenericReal SLGenericReal User defined filter for Real data
SLGenericFilter SLGenericFilter User defined filter for Binary data
SLGenericRealMatrix SLGenericRealMatrix User defined generator for Real matrix data

DirectShow Audio Filters

ALDMOEffect ALDMOEffect Performs DMO Effect over the Audio
ALDSAudioFilter ALDSAudioFilter Passes audio trough a DirectShow filter

DirectShow Audio output components

ALDSAudioOut ALDSAudioOut Sends audio data to an audio output device
ALASFLogger ALASFLogger Records the audio to WMA or ASF file
ALASFBroadcast ALASFBroadcast Broadcasts WMA or ASF streams over Internet using TCP/IP socket and/or publishing point(s)
ALDSToSinkFilter ALDSToSinkFilter Sends audio to a DirectShow filter
ALDSAudioLogger ALDSAudioLogger Records the audio to Audio file using DirectShow.

DirectShow Audio source components

ALASFPlayer ALASFPlayer Plays ASF and WMA Audio Files
ALDSFromSourceFilter ALDSFromSourceFilter Captures audio from DirectShow filter
ALDSAudioIn ALDSAudioIn Captures audio from an audio input device using DirectShow.

DirectShow Compression

ALDSAudioCompressor ALDSAudioCompressor Compresses audio using DirectShow
ALDSAudioDecompressor ALDSAudioDecompressor Decompresses compressed audio using DirectShow

DirectShow support components

MLDSMediaFilter MLDSMediaFilter

Passes media trough a DirectShow filter


MLDSGraphView MLDSGraphView DirectShow graph display

Generic Filters

SLGenericReal SLGenericReal User defined filter for Real data
SLGenericFilter SLGenericFilter User defined filter for Binary data
SLGenericRealMatrix SLGenericRealMatrix User defined generator for Real matrix data
TLGenericTextFilter TLGenericTextFilter User defined filter for Text data
TLGenericFilter TLGenericFilter

User defined timing filter

Generic Generators

SLGenericGen SLGenericGen User defined generator for Binary data
SLGenericRealGen SLGenericRealGen User defined generator for Real data


ALVUMeter ALVUMeter VU (Volume Unit) Meter
ALPPMMeter ALPPMMeter PPM (Peak Programme Meter) Meter
ALRMSMeter ALRMSMeter RMS (Root Mean Square) Meter


ALQueuedSwitch ALQueuedSwitch Multi-channel queued video and audio switch
ALSystemMixer ALSystemMixer Controls the Windows system audio mixer
ALSnapshot ALSnapshot Takes a snapshot of the data
ALSwitch ALSwitch Enables or disables the audio to go trough
ALBufferQueue ALBufferQueue Audio buffer queue component
ALMasterVolume ALMasterVolume

Controls the Windows system Master Volume Control

OpenWireStudio OpenWireStudio

Loads, executes, and exchanges data with OpenWire Studio projects

Signal Filters

SLGenericRealValue SLGenericRealValue User defined filter for Real values
SLGenericReal SLGenericReal User defined filter for Real data
SLGenericFilter SLGenericFilter User defined filter for Binary data
SLGenericRealMatrix SLGenericRealMatrix User defined generator for Real matrix data

Signal Generators

SLGenericRealValueGen SLGenericRealValueGen User defined generator for Real values
SLGenericGen SLGenericGen User defined generator for Binary data
SLGenericRealGen SLGenericRealGen User defined generator for Real data

Timing components

TLWatchDogTimer TLWatchDogTimer

Implements a Watch Dog Timer.

TLMainThredEvent TLMainThredEvent

Allows other threads to generate main thread notifications.

TLClockGen TLClockGen

Provides clock for other components.

TLThreadEvent TLThreadEvent

Use this component to execute code in a separated thread

TLStopWatch TLStopWatch

Use this component to implement a Stop Watch

TLFrequencyMeter TLFrequencyMeter

Use this component to implement a Frequency meter

TLCounter TLCounter

Use this component to implement a Counter


SLAverageValue SLAverageValue

Use this component to average the input values


SLScope SLScope Visible Scope/Plot component for representing floating point data
SLWaterfall SLWaterfall Visible waterfall for representing Real(double) data

Video Layers

SLScopeLayer SLScopeLayer

A scope drawing layer.  You can add this layer to any drawing component such as TVLDraw to render a video layer containing a scope

SLWaterfallLayer SLWaterfallLayer

A waterfall draw layer.  You can add this layer to any drawing component such as TVLDraw to render a video layer containing a waterfall

Matrix Layers

SLExternalScopeMatrixLayer SLExternalScopeMatrixLayer A scope matrix component layer
SLExternalWaterfallMatrixLayer SLExternalWaterfallMatrixLayer A waterfall matrix component layer

Control Element

SLExternalScopeElement SLExternalScopeElement A scope component element
SLExternalWaterfallElement SLExternalWaterfallElement A waterfall component element

AudioLab: What's New

New in Version (released on 2021-06-20)

  • Improved RAD Studio 10.4 Sydney support
  • Improved Dynamic Type Info implementation

New in Version (released on 2021-05-12)

  • Added RAD Studio 10.4 Sydney support
  • Improved Dynamic Type Info implementation

New in Version (released on 2020-11-26)

  • Added Visual Studio 2019 support
  • Redesigned Visual C++ support
  • Added Byte and Char visual live bindings
  • Significantly improved loading execution, and editing speed
  • Significantly improved JSON support
  • Improved IGDIPlus rendering performance
  • Modified to use interface class function methods instead of constructors
  • Redesigned pin path collection to significantly improve the speed
  • Redesigned to set pin and properties owner fields on creation
  • Improved pin information caching
  • CreateLock replaced by Create with Lock parameter
  • Improved FMX Design Time support
  • Improved FMX support
  • Improved zoom selecting in the scope


New in Version (released on 2020-09-24)

  • Updated to RAD Studio 10.3 Rio Update 3
  • Added support for Boolean Buffers
  • Improved buffer visualizers
  • Added Audio and Video support to the Packet and Structure components
  • Added UnpackedOutputPin to the Split Structure and Unpacket components
  • Significantly Improved FMX support for the Scope and Waterfall components
  • Improved Unpacket implementation
  • Improved Visual Live Bindings
  • Significantly redesigned OpenWire Editor
  • Added initial Quaternion and 3D Point support
  • Added OSX64 support
  • Improved overall performance and stability
  • Added option to use Const anonymous methods for improved performance
  • Improved FMX compatibility and support
  • Simplified JSON API
  • Improved JSON implementation
  • Improved sockets implementation
  • Added Sockets Multicast support
  • Significantly improved Execute Process implementation
  • Added support TStrings reverse enumerators and Query interface trough class helper
  • Improved Dynamic Type Info implementation
  • Improved Property Collection and Component Collection editors
  • Improved Property editors

New in Version (released on 2018-12-21)

  • Added RAD Studio 10.3 Rio support
  • Improved Dynamic Type Info implementation
  • Improved property editors

New in Version (released on 2018-11-12)

  • Added Initial Linux support
  • Added Initial iOS support
  • Added RAD Studio 10.2 Tokyo support
  • Added Visual Studio 2017 support
  • Added 64 bit Visual C++ support
  • Improved MAC, and Android compatibility
  • Added support for floating point Wave files
  • Added ALMasterVolume component
  • Added 64 bit ASIO support
  • Added OnDragged event for TSLDisplayCursor
  • Improved support for Scope Cursors
  • Added separated AutoScaling EnabledMin and EnabledMax properties
  • Added initial Waterfall Interpolate option
  • Added TSLWaterfallMarkers.AddAt
  • Added CursorTrail settings
  • Added GetXIndexesAtValue and GetYIndexesAtValue to the Scope Channels
  • Added serialization for ISLDataBuffer
  • Added buffer enumerators
  • Improved bindings API
  • Pins converted to use the new Mitov.Runtime serialization
  • Added OWRequiredPinAttribute support
  • Added TOWIntToCardinalFormatConverter and TOWCardinalToIntegerFormatConverter
  • Added TOWRealToRealComplexFormatConverter
  • Added TOWRealListStatePin and TOWIntegerListStatePin
  • Added Execute Process
  • Added Command Line parsing and Process Execute
  • Added option to disable the design time extentions
  • Added Socket Binding
  • Redesigned JSON Serialization
  • Added TPeriodicThread
  • Added initial Dynamic Type Info implementation
  • Added GetIndexedSubProperty in the RTTI
  • Added GetType for TObject in the RTTI
  • Added support for both object and class in TMethodInfo.Invoke in the RTTI
  • Enchanced Query functionality
  • Added IPairCollection
  • IArrayWriter renamed to ISequentialWriter
  • IArrayReader renamed to ISequentialReader
  • Improved Serialization Readers
  • Added Reserialize
  • Improved design time property editors support
  • Added option to replace property collection items while keeping all compatible settings
  • Added filtering for property collections
  • Added support for categorized list property selection
  • Added TreeView filtering support
  • Updated to use the latest Delphi language features

New in Version (released on 2016-05-03)

  • Added RAD Studio 10.1 Berlin support
  • Removed the old .NET 2.0 Assemblies
  • Added Visual Live Binding property editors
  • Added Reset to Default property editors
  • Added Enum property editors
  • Added Class events property editors
  • Added Multi-Event property editors
  • Added Flush for the AudioMixer
  • Added option to Enable the processing engines
  • Introduced MAC support for some of the components when compiling with source code

New in Version (released on 2015-10-28)

  • Added 10 Seattle support
  • Added support for VS2015
  • Added TOWBoolToIntFormatConverter
  • Improved threading support
  • Improved OpenWire Editor
  • Clock pins changed to MiltiSink
  • Improved Design Time Editors
  • Improved JSON support
  • Improved collections
  • Added more Live Binding types
  • Added support for hosting OpenWire Studio projects
  • Added serialization support in the buffers
  • Added TALGoniometer

New in Version (released on 2015-04-17)

  • Added TTLGenericFilter
  • Added more visual live binding types
  • Significantly improved property Delphi editors
  • Added option to specify MaxSamples that can be queued per channel in the Audio Mixer.
  • Timestamps interfaced

New in Version (released on 2014-12-20)

  • Improved .NET support
  • Enchanced OpenWire Editor
  • Added custom toolbar buttons, and images to the PlotLab components
  • Added more visual live bindings
  • Added custom Width for the display cursors to the PlotLab components
  • Improved TALDSAudioModes support for the TALDSAudioIn

New in Version (released on 2014-11-18)

  • Improved Speex support
  • Improved FFMpeg support
  • Added button events to the PlotLab components
  • Added selection mouse events to the PlotLab components
  • Added HoldWhileZooming to the PlotLab components
  • Added DisplayChannelLink custoom drawing to the PlotLab components
  • Includes the free Mitov.Runtime
  • Added XE7 support

New in Version (released on 2014-04-15)

  • XE5 and XE6 support
  • Significantly enhanced OpenWire Editor
  • Improved Property and component editors
  • Improved FireMonkey support
  • Performance improvements
  • Added FFMPeg AudioLogger, AudioPlayer, AudioCompressor, and AudioDecompressor
  • Improved access to the filter taps
  • Added filter taps access to the Graphic Equalizer
  • Added TLPProcessingManager component
  • Added TTLSynchronize component
  • Added support for IIR, and Biquad IIR LowPass, HighPass, BandPass and BandStop filetrs
  • Added presets support for VST3
  • Added support for DB signal data binding
  • Added a number of new data bindings
  • Added support for VCL DB Components visual live binding

New in Version 6.0 (released on 2013-06-12)

  • Added support for Delphi / C++ Builder / RAD Studio XE4
  • The OpenWire Editor and Visual Live Binding are now included in the install
  • Added VST 3.0 support
  • Improved VST 2.X support
  • Added TTLStopWatch component
  • Added TTLCounter component
  • Added TTLThreadEvent component
  • Added TTLFrequencyMeter component
  • Added TSLAverageValue component
  • Improved Firemonkey support
  • Significantly improved threading model and performance
  • Significant code reduction due to upgrade to the latest language features such as generics, anonymous methods, and attributes
  • New design time API and functionality
  • Better integration with the OpenWire Editor including inplace editors in the OpenWire view
  • Discontinued support for Delphi and C++ Builder versions older than XE2 due to the lack of support for the latest language features in them
  • Redesigned DirectShow support
  • Improved .NET memory management
  • Improved .NET design time integration
  • Improved OpenWire Editor .NET integration

New in Version (released on 2012-10-20)

  • Fixed a bug when populating existing buffers in .NET generic filters

New in Version 5.0.3 (released on 2012-10-10)


  • Added support for VST 2.X
  • Added TMLDSMediaFilter component
  • Added TTLGenericTextFilter component
  • Added cursor pins for the Waterfall component
  • Added floating markers for the Scope component
  • Added support for Delphi / C++ Builder / RAD Studio XE3
  • Added support for Visual Studio 2012
  • Improved Firemonkey support
  • Fixed memory leak for .NET generic filters

New in Version 5.0.2 (released on 2012-04-16)


  • Added FireMonkey support.
  • Added 64 bit support for VCL, FireMonkey, and .NET
  • All .NET assemblies are now managed assemblies.
  • The .NET assemblies are reduced by half combining low level and high level assemblies, and simplifying deployment.
  • All .NET assemblies now contain the necessary 32 and 64 bit BPLs and DLLs internally simplifying the deployment.
  • The .NET Visual C++ redistributable are not needed any more.
  • Added access to IBaseFilter in the DirectShow audio capture component.
  • Added PlotLab Waterfall Cursors, CursorLinks and Labels.
  • Added PlotLab Waterfall Cursor Intersection pins.

New in Version 5.0.1 (released on 2011-10-18)

  • The managed assemblies are now rewritten in C# for better .NET 4.0 compatibility.
  • Added support for .NET 4.0 and .NET 3.5 “Client Profile”.
  • Significantly improved .NET type converters.
  • Significantly optimized component loading performance in .NET.
  • Major improvements in the .NET property editors.
  • Small improvements in the Unicode support for VC++.
  • Improved VisualStudio 2010 .NET support.
  • .NET assemblies have been renamed to better match the Microsoft guidelines.
  • Added .NET 4.0 assemblies.

New in Version 5.0 (released on 2011-09-05)

  • Added Delphi XE and XE2 support.
  • Added TALDynamicRangeCompressorcomponent.
  • Added DMO values, and envelopes.
  • Added Scope and Waterfall marker crosshairs.
  • Added ASF player attributes.
  • Brand new subsample Waterfall rendering mechanism.
  • Added optional user input for the video layers.
  • Significantly improved multithreading model adapted for multicore systems, with advanced relaxed interlocking, and with optional per-component, dedicated threads.

New in Version 4.5

  • Added Visual Studio 2010 support.
  • Added TALDSVideoFilter component.
  • Added TMLDSGraphView component.
  • Added TSLGenericRealMatrix component.
  • Added SLGenericRealValue and TSLGenericRealValueGen components.
  • Improved DirectShow support.
  • Improved multithreading locks.
  • Improved Scope component.
  • Improved RAD Studio 2010 buffer debugger visualizes.

New in Version 4.3.1

  • Updated install.
  • Improved RAD Studio 2010 buffer debugger visualizes.

New in Version 4.3

  • Added RAD Studio 2010 support.
  • Added support for composite controls.
  • Added TALDSToSinkFilter and TALDSFromSourceFilter components.
  • Added component elements support for the Scope and Waterfall components.
  • Improved .NET memory management.
  • Added RAD Studio 2010 buffer debugger visualizes.

New in Version 4.0.1

  • Added multiple axes support for the Scope cursors.
  • Added support for short, unsigned short and unsigned integer data for the scope and waterfall components.
  • Improved marker support for the Scope.
  • Improved installs.
  • Fixed bug in the ASIO editor.
  • Fixed bug in TALASFBroadcast component when restarting broadcast.

New in Version 4.0

  • Full Visual Studio 2008 support.
  • Full RAD Studio 2009 support.
  • Added Prism support.
  • Improved .NET support.
  • The library is now fully Unicode compliant.
  • New higher performance multithreading locking for better multi core utilization.
  • Significantly enhanced buffer classes.
  • Added integrated GDI+ support.
  • Added TimingLab ClockGen, WatchDogTimer, and MainThredEvent components.
  • Added ChangeRange and DetectLevels components.
  • Added ASIO support.
  • Added Comb filter.
  • Added Windows Media Format broadcasting component.
  • Added buffer queue component.
  • Added integrated GDI+ support.
  • The Scope component supports multiple X and Y Axes.
  • Added Scope and Waterfall toolbar customization.
  • The Scope now allows data gaps.
  • Added Scope Automatic data down sampling for faster drawing of huge amounts of data.
  • Added Scope X Axis logarithmic support.
  • Added Scope channel links (Allow channels to be paired together to form a zone)
  • Circular and arbitrary zones added to the Scope component.
  • Added Scope Step channel mode.
  • Added scope panning navigation mode.
  • Added Scope directional zooming.
  • Added Scope and Waterfall Axis and Level configuration buttons.
  • Added video layers support.
  • Added new examples.

New in Version 3.1

  • Added LowPass, HighPass, BandPass, and BandStop components.
  • Added ASFAudioPlayer component.
  • All libraries are available under .NET.
  • All design time features are now available in .NET
  • All .NET assemblies are signed.
  • The assemblies are registered in GAC.
  • All DLLs are made embedded resources in the assemblies.
  • Fixed some minor OpenWire problems.
  • Full RAD Studio 2007 support.
  • Fixed problems with Reversed and Vertical scope.
  • Added new custom step modes to the Scope and Waterfall.
  • Added data access methods to the Waterfall.
  • Added number of new design editors.
  • Enhanced help files.
  • Delphi 2005, BDS 2006, and RAD 2007 help files are now integrated.
  • Added new examples.

New in Version 3.0

  • Updated to IPP 5.1.
  • Added raw closed caption support (allows access to the CC text).
  • New faster multithreading buffer protection.
  • New faster buffer memory manager.
  • The DataAceessObjects for the buffers are now obsolete. The functionality is moved to the buffers.
  • The buffers raw data access methods now are called Read, Write and Modify. The ModifyData is split into Modify and Write to reduce unnecessary memory copy operations and to improve the performance.
  • Added 24 and 32 bit PCM audio buffer support.
  • Added higher than 44100 sample audio rates support.
  • Added multichannel (More than 2) audio support.
  • Added Generic generator components.
  • Added On/Off Switch component.
  • Added Snapshot component.
  • Added TALDSAudioCompressor and TALDSAudioDecompressor.
  • Enhanced ASF profile support.
  • Added basic Unicode support for Visual C++ MFC.
  • Fixed bug in CTStrings support in Visual C++ MFC.
  • Added Spectrum normalization.
  • Added Scope and Waterfall custom axis labels.
  • Added Scope channel value intersections support.
  • Added Scope and Waterfall Axis zooming and toolbars.
  • Added X/Y plotting support to the Scope.
  • Added Scope channel highlighting.
  • Added Scope Channel OnClick events.
  • Added Scope Cursor events.
  • Added Scope and Waterfall mouse value tip window.
  • Added Scope and Waterfall OnZoom events.

New in Version 2.2.1

  • Fixed a conflict with TChart.
  • Added Four CC property for the DirectShow Audio and Video compressions.
  • Improved Audio Mixer.
  • Added initial support for vertical Scope.

New in Version 2.2

  • Added BDS 2006 support.
  • Added Visual Studio 2005 support.
  • Added Speex compressor and decompressor components.
  • Added Vorbis compressor and decompressor components.
  • The Ogg Logger and Player now do not handle compression. Instead they leave the compression/decompression to other components such as Vorbis compressor and decompresor and just handle the Ogg format structures. This allows adding different types of Ogg compression.
  • Added Scope measurements and selections.
  • Added basic mouse wheel support.
  • Enhanced property pages.
  • Allows adding cursors from the property pages.
  • Allows reversed X axes for the Waterfall component.
  • The cursors and the markers now are available in the legend.
  • The Scope and the Waterfall can receive focus.
  • New Ogg Logger and Player.
  • Added Scope cursors, and property pages.
  • Enhanced Scope markers.
  • This version fully supports Visual C++.
  • New queued audio switch component for rapid switching between audio sources while running.
  • Added sample step in all the Spectrum component.
  • Added Waterfall markers.
  • Added custom draw functionality in the Scope channels.
  • Added Undo/Redo zoom functionality.
  • Added channel editor for the Scope.
  • Added Marker editor for the Waterfall.
  • Improved Audio Compression support.

New in Version 2.1

  • This version does not need any DLLs in order to work.
  • New compression and decompression components for Audio over IP applications.
  • New Windows Media Format component for creating ASF and WMA files and protected content.
  • The logging components have been redesigned to better support splitting audio files.
  • Improved master pumping.
( Click to view Larger images. )
These demos are executable after downloading.
Also see:   Demo source code downloads

AudioLab Examples

Volume Monitor Audio Volume Monitor OpenWire AudioLab Volume Monitor
Plot then Play Wave File Plot then Play Wave File
Process Audio Process Audio
Audio Waterfall Audio Waterfall OpenWire AudioLab Waterfall
Audio Display Audio Display
Audio Mixer Audio Mixer

AudioLab: Frequently Asked Questions

Q: Does AudioLab support the format of my Audio Files?
A: AudioLab supports both Win32 API and DirectShow technologies. Win32 API will allow you to play only Wave files. If you decide to use DirectShow AudioLab will use any DirectShow filter available on your system. If you have a DirectShow filter for a particular video format AudioLab will recognize the format and use the proper filter. This means that AudioLab is capable of using any format available today. If you have a file that you can’t play in AudioLab, it means that you probably don’t have the proper DirectShow filter. Please search the web and download the filter needed for the particular format.
Q: I can’t play my video file! What is wrong?
A: In order to play format other then basic Wave you must use the DirectShow TVLDSAudioPlayer component. If you still can’t play the file, please check if you have installed a DirectShow codec for the file format. AudioLab needs a codec available in the system in order to decode the file. A huge selection of codecs is available on the WEB.
Q: Do I have to purchase AudioLab?
A: AudioLab is free for non commercial purposes. This means that you can use it for personal pleasure, hobby, or evaluation purposes. If you are student you can also use it for free for your educational needs including school projects. If you are a tutor at present you also can use it for free for your classes. However in the near future a low cost tutor license will be available, and you will have to purchase it. Your students however will not need license to use the product at class.
Q: Is AudioLab multithreading? Will it stop streaming while I move the window with the mouse?
A: Yes. AudioLab is fully multithreaded and will not stop streaming while the main thread is busy.
Q: Does AudioLab support DirectShow?
A: Yes. AudioLab supports DirectShow 8.1 or higher.
Q: What version of DirectShow I need to run AudioLab?
A: AudioLab supports DirectShow 8.1 or higher.
Q: Can I capture and save audio sample out of the audio stream?
A: Yes. Use the TALGenericFilter to obtain the sample. Check the CustomFiltersDemo example in the demos directory.
Q: Can I create a audio on the fly?
A: Yes. Use the TALGenericFilter to generate the buffers. Check the “Quick Start” manual for more information.
Q: Can I process the audio faster than the normal audio speed.
A: Yes. Check the “Quick Start” manual for more information.
Q: I want to copy and paste parts of the audio a new file. Can AudioLab do that?
A: Yes. AudioLab uses DirectShow to play and record files. Many formats do not allow easy positioning and can’t be used with DirectShow Editing Services. AudioLab offers a different approach. It allows you to play even non seek enabled file to a specific position and copy a portion of the file into a new one. Check the “Quick Start” manual for more information.
Q: Can I play audio files from a Web URL?
A: Yes. You can use the TALDSAudioPlayer to play files as well as any audio URL from the web.
Q: I want to use AudioLab. Do I have to install DirectShow?
A: DirectShow is not required on your system if you are not planning to write application using the DirectShow components of the package.

AudioLab Installers

Firemonkey and VCL Installer: AudioLab VCL and FireMonkey 32 & 64 bit support for 10.4 Sydney Update 2
Updated on 2021-06-20, downloaded 117 times.
Firemonkey and VCL Installer: AudioLab VCL and FireMonkey 32 & 64 bit support for 10.3 Rio Update 3
Updated on 2020-11-26, downloaded 273 times.
Visual C++ Installer: AudioLab for Visual C++ MFC
Updated on 2020-11-26, downloaded 13761 times.
.NET Installer: AudioLab for Microsoft .NET 4.0 (4.5 and 4.6 compatible)
Updated on 2020-11-26, downloaded 33051 times.

Legacy Firemonkey and VCL Installer: AudioLab VCL and FireMonkey 32 & 64 bit support for 10.2 Tokyo and 10.3 Rio
Updated on 2018-12-22, downloaded 987 times.
Legacy Firemonkey and VCL Installer: AudioLab VCL and FireMonkey 32 & 64 bit support for XE8 to 10.1 Berlin
Updated on 2016-06-06, downloaded 1699 times.
Legacy Firemonkey and VCL Installer: Legacy AudioLab 5.0.3 VCL and FireMonkey (Windows only) for 2010 to XE
Updated on 2016-05-04, downloaded 21198 times.
Legacy Firemonkey and VCL Installer: AudioLab VCL and FireMonkey 32 & 64 bit support for XE7 to 10 Seattle
Updated on 2015-10-28, downloaded 1047 times.
Legacy Firemonkey and VCL Installer: AudioLab VCL and FireMonkey 32 & 64 bit support for XE6 to XE8
Updated on 2015-06-11, downloaded 3647 times.
Legacy Firemonkey and VCL Installer: AudioLab VCL and FireMonkey 32 & 64 bit support for XE4 to XE7
Updated on 2014-11-19, downloaded 3436 times.
Legacy Firemonkey and VCL Installer: AudioLab VCL and FireMonkey 32 & 64 bit support for XE3 to XE6
Updated on 2014-04-22, downloaded 1392 times.
Legacy Firemonkey and VCL Installer: AudioLab 6.0.0 VCL and FireMonkey (Windows only) 32 and 64 bit support for XE2 to XE4
Updated on 2013-06-13, downloaded 8108 times.
Legacy Firemonkey and VCL Installer: AudioLab 5.0.3 VCL and FireMonkey for XE2 Update4 Hotfix1
Updated on 2012-10-13, downloaded 2442 times.
Legacy Firemonkey and VCL Installer: AudioLab 5.0.1 for Delphi/C++ Builder 5 to 2009
Updated on 2011-10-18, downloaded 69781 times.


These demos are executable after downloading.   Also see: Demo source code downloads
Audio Recording demo

Demonstrates basic audio recording

Audio Signal Generator demo

Demonstrates using TALSignalGen to generate audible tone (sine), triangle and square waves

Custom Audio Filters demo

Demonstrates applying custom filters to an audio stream

Audio Compression demo
Demonstrates applying audio compressors
Audio Mixer demo
Demonstrates the TALAudioMixer component
Process Audio demo
Demonstrates applying an equalizer to an audio stream and saving the output to file
Volume Monitor Demo
Demonstrates plotting volume levels of playing audio
Waterfall demo
Displays a playing audio stream in a waterfall plot
Plot Wave Data demo
Demonstrates loading an entire WAV file and displaying in a scope


The libraries are licensed per developer, and there are no royalties required. Once you have purchased a developer license, you are free to distribute your final product without the need to pay any royalties or other fees as long as you comply with the following license agreement:
Users of the LabPacks Component Pack(Software) must accept these terms of license.
If you refuse to accept the terms of license, you may not use this software, and you have the right to return it within 30 days of the purchase date, and to receive your money back.
For your convenience a copy of this license agreement will be stored on your system during the installation.
This license grants you the following rights:
You have a non exclusive license to the Software. The Title and all intangible rights to the Software are the property of Mitov Software .  
You may install and use one copy of the Software per computer assuming only one and the same person will use the Software on all of the computers. You may distribute any application that includes Software without any additional royalties beyond your initial license registration fee.
You can also create a reasonable set of copies of the product on different types of media, such as CD Rom or Type Backup, as far as those copies are used only for your own back up protection.
Description of the limitations. 
You may not reverse engineer, decompile, or disassemble the Software.
The Software is licensed as a single product. You may not rent or lease the Software. You must treat the Software like any other copyrighted material except that you may either (a) a reasonable amount of copies of the Software solely for backup or archival purposes, or (b) install the Software multiple computers provided you keep the original solely for backup or archival purposes and only a single developer will use all of the copies.
You may not separate Delphi and C++ Builder components from this Software.
Each developer must have a valid license for the Software.
You may not create a competing component product using this Software.
Additional restriction to Delphi-VCL and C++ Builder components: 
You may not distribute the Delphi-VCL components in a DCU (Delphi Compiled Unit) format. You can distribute the component only as a part of your executable or dynamic link library program in a compiled form.
You may not distribute the C++ Builder components in OBJ format. You can distribute the component only as a part of your executable or dynamic link library program in a compiled form.
Mitov Software grants a limited warranty with these restrictions:


May 12, 2021more...

NEW RELEASE: RAD Studio/Delphi 10.4.2 Sydney version of all the libraries has been released!

November 26, 2020more...

NEW RELEASE: Version 8.0.0 of all of the Mitov Software products has been released!

September 24, 2020more...

The latest RAD Studio 10.3 Rio Update 3 compatible versions of Libraries and OpenWire Studio are now available on the site

December 21, 2018more...

The latest RAD Studio 10.3 Rio compatible versions of Libraries and OpenWire Studio are now available on the site

November 12, 2018more...

The latest RAD Studio 10.2, and Visual Studio 2017 compatible versions of Libraries and OpenWire Studio are now available on the site

January 22, 2018more...

Delphi 10.2.2 Tokyo versions available

May 4, 2016more...

10.1 Berlin Support in Latest Release

October 28, 2015more...

10 Seattle Support in Latest Release

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