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Windows CE Multimedia Team Blog
Multimedia, Graphics, and Audio for Windows CE, Windows Mobile, and their partner products.
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Author: Andy Raffman
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Windows CE Multimedia Team Blog
The Wavedev2 ForceSpeaker API
Posted
over 5 years ago
by
Andy Raffman
13
Comments
This is just a quick note describing the behavior of the MM_WOM_FORCESPEAKER API built into the wavedev2 wave driver. One issue in Smartphone devices is determining where to route ringtones and other high-priority notifications. This is driven by...
Windows CE Multimedia Team Blog
Multichannel Audio in Windows CE
Posted
over 5 years ago
by
Andy Raffman
10
Comments
Most of the infrastructure is in place to support multichannel audio in Windows CE, although the number of components that we ship to actually implement it is limited. In this blog I'll cover the varying types of multichannel audio and what features are...
Windows CE Multimedia Team Blog
Windows CE Audio: What does the term "mixer" mean?
Posted
over 5 years ago
by
Andy Raffman
4
Comments
In the Windows CE audio stack, the term "mixer" is used to refer to a couple of different, unrelated components. This blog will try to define each of them and how they differ. There are usually three different contexts in which "mixer" is used: the...
Windows CE Multimedia Team Blog
FAT Filesystem Performance Issues for DVR
Posted
over 5 years ago
by
Andy Raffman
3
Comments
Time to switch gears a bit away from audio... First a minor digression into what we were building (which some people may find interesting, and this is still a Multimedia blog ;-). Then I'll get to how this involves the FAT filesystem. One of the...
Windows CE Multimedia Team Blog
The Wavedev2 Gainclass Implementation
Posted
over 5 years ago
by
Andy Raffman
13
Comments
Goals Back in 2000, while we were defining the requirements for the Windows Mobile Smartphone audio design, one of our goals was to mute most audio applications while a phone call is in progress. A secondary issue is the fact that most of...
Windows CE Multimedia Team Blog
The Wavedev2 MIDI Implementation
Posted
over 5 years ago
by
Andy Raffman
10
Comments
The wavedev2 wave driver sample code includes a fairly primitive MIDI synthesizer as part of the source code. The reason for its relative simplicity dates back to the question: "What can you implement in two weeks with no additional ROM hit to run on...
Windows CE Multimedia Team Blog
Windows CE Audio Driver Samples
Posted
over 5 years ago
by
Andy Raffman
12
Comments
This is my first blog post, so please feel free to leave feedback with questions or comments, especially if you feel I've gotten anything wrong or if there's some critical bit of infomation missing. Windows CE currently ships audio driver samples descended...
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