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Audio Capture Filter - Win32 apps | Microsoft Docs
https://docs.microsoft.com/en-us/windows/win32/directshow/audio-capture-filter
About the Audio Capture Filter - Win32 apps | Microsoft …
https://docs.microsoft.com/en-us/windows/win32/directshow/about-the-audio-capture-filter
DirectShow enables capture from the analog inputs on a sound card through the Audio Capture Filter. This filter uses the waveInXXX APIs to control any device whose driver supports these APIs. Each card on the system is represented by a separate instance of the filter.
DirectShow Filters - Win32 apps | Microsoft Docs
https://docs.microsoft.com/en-us/windows/win32/directshow/directshow-filters
Audio Capture - Win32 apps | Microsoft Docs
https://docs.microsoft.com/en-us/windows/win32/directshow/audio-capture
An application can use 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.
c++ - Directshow audio capture filter generates only 1 ...
https://stackoverflow.com/questions/70237930/directshow-audio-capture-filter-generates-only-1-sample-per-second
I'm making an small real-time audio-video application using Directshow. I use SampleGrabber to grab samples from Audio Capture filter. The SampleGrabber's callback is called every second and each sample's size is 88200 bytes. I printed the WAVEFORMATEX: WAVE_FORMAT_PCM: true nChannels: 2 nSamplesPerSec: 44100 nAvgBytesPerSec: 176400 …
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