|Microsoft DirectShow 9.0|
An application can use Microsoft® DirectShow® to capture audio data from microphones, tape players, and other devices, through the inputs on the sound card. Typical scenarios include:
- Recording a voiceover narration for later dubbing over a video stream.
- Converting legacy analog audio content to digital format.
- Capturing voice or music for transmission over a network.
End users have several options for capturing audio from the sound card to the hard disk. Most cards provide applications for mixing and recording from their audio inputs. The Microsoft® Windows® operating system provides Sound Recorder, a simple utility application for recording from a microphone. Microsoft® Windows Media™ Tools includes the Windows Media Encoder stand-alone application. The Windows Media Encoder can also be incorporated into a DirectShow application as a Microsoft® DirectX® Media Object (DMO). This section describes how to integrate audio capture functionality within your own application using DirectShow.
This section contains the following topics:
- About the Audio Capture Filter
- Creating an Audio Capture Graph
- Creating an Audio Capture Graph with Preview
- Setting Audio Capture Properties