Capturing raw PCM audio on Windows Phone 8 and 8.1

[This is a copy of the blog post I originally wrote and published on behalf of the WSDS team. The original post can be found here.] There are a number of different audio capture and playback APIs on Windows Phone 8.x. Unfortunately If you want to get at the raw PCM data and process it…


Free Chalk Talk: Light up Your Apps with Sights and Sounds

Hello All, I am giving a live chalk talk on October 16th for interested English speaking engineers. Anyone can sign up and join the talk for free! If you or someone you know would benefit from a discussion about integrating audio and video technologies into your apps please join me. All audio and video questions…


Activating an audio endpoint when not connected causes the device to report incorrect capabilities

The other day we had a major OEM report an issue with the WASAPI. In particular when they found that when they called “IAudioEndpointVolume::QueryHardwareSupport” it would occasionally return unexpected results for USB web cam devices. Most of the time calling this method would return a full list of capabilities for the device. Occasionally this method…

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