Class ALASIOAudioDevice.TALASIOAudioDevice

Revision as of 02:45, 11 June 2013 (view source) David Alm (Talk | contribs) (Automated Syncronization with Documentation) ← Older edit		Latest revision as of 00:30, 26 June 2013 (view source) David Alm (Talk | contribs) (Automated Syncronization with Documentation)
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	=== C# (.NET): ===		=== C# (.NET): ===
	<code>		<code>
−	'''public ref class''' TALASIOAudioDevice : [[Class LPComponent.TLPComponent|Mitov.AudioLab.Component]]	+	'''public ref class''' ASIOAudioDevice : [[Class LPComponent.TLPComponent|Mitov.AudioLab.Component]]
	</code>		</code>
	== Summary ==		== Summary ==

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Latest revision as of 00:30, 26 June 2013

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Package: AudioLabPkg

Unit: ALASIOAudioDevice

Inherits: TLPComponent

Contents 1 Syntax 1.1 Delphi: 1.2 C++ Builder: 1.3 Visual C++ (MFC): 1.4 C# (.NET): 2 Summary 3 Description 4 Properties 4.1 Published 4.2 Public 5 Methods 5.1 Public 6 Pins 7 PinLists 8 Events

Syntax

Delphi:

type TALASIOAudioDevice = class( TLPComponent )

C++ Builder:

class TALASIOAudioDevice : public TLPComponent

Visual C++ (MFC):

class CTALASIOAudioDevice : public CTLPComponent

C# (.NET):

public ref class ASIOAudioDevice : Mitov.AudioLab.Component

Summary

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

Description

Use this component to captures from and sends audio to multiple channels of ASIO audio input/output device such audio board, modem, or soundblaster.

Audio Stream Input/Output (ASIO) is a computer soundcard 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. Whereas Microsoft’s DirectSound is commonly used as a stereo input and output for non-professional users, ASIO allows musicians and sound engineers to process their audio via Windows' computer software instead of external hardware.

ASIO bypasses the normal audio path from the user application through layers of intermediary Windows operating system software, so that the application connects directly to the soundcard hardware. Each layer that is bypassed means a reduction in latency, the delay between an application sending sound to the sound being reproduced by the soundcard. In this way ASIO offers a relatively simple way of accessing multiple audio inputs and outputs independently.

In order to use this component you need to have a device with ASIO driver. There is also an universal ASIO driver canned ASIO4ALL - http://www.asio4all.com that can be used with any Windows sound blaster.

Diagram:

Properties

Published

• Enabled - Enables or disables the ASIO device.
• BufferSize - Specifies what should be the desired buffer size in samples for the Audio data transfer.
• MasterPumping - Specifies the masterpumping settings.
• Device - Specifies the device to be used for the Audio data transfer.
• SampleRate - Specifies what should be the desired sample rate of the Audio data transfer.
• InputChannels - Collection of Audio input channels.
• OutputChannels - Collection of Audio output channels.
• ClockSource - Specifies what should be the desired Clock Source for the Audio data transfer.

Public

• UsesPostOutput - Indicates if the ASIO device uses post output.
• AvailableOutputChannels - Returns list of the available ASIO audio output channels.
• AvailableInputChannels - Returns list of the available ASIO audio input channels.
• OutputLatency - Returns the Output latency in samples.
• InputLatency - Returns the Input latency in samples.
• DriverVersion - Returns the ASIO driver version number.
• ErrorMessage - Returns the current ASIO error message.
• DriverName - Returns the ASIO driver name.
• Opened - Indicates if the device is opened.

Methods

Public

• function Open() : Boolean - Opens the ASIO device.
• procedure Close() - Closes the ASIO device.
• function Start() : Boolean - Starts the ASIO device.
• procedure Stop() - Stops the ASIO device.
• function ShowDialog() : Boolean - Shows a device specific configuration dialog if available.
• function CanSampleRate(ARate : Real) : Boolean - Checks if the device can sample with a specified sample rate.

Pins

• ClockOutputPin - The clock output pin of the component.

PinLists

• InputPins - The Audio Input Pins of the component.
• OutputPins - The output pins of the component.

Events

• OnError - Occurs on device error.
• OnWarning - Occurs when warning occurs in the device.
• OnResyncRequest - Occurs when the ASIO requests resyncing.
• OnLatenciesChanged - Occurs when the ASIO device latency has changed.