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Please let me know why I am being downvoted, don't just do so. XAudio2 among several other libraries are key, even if not "DirectX". Even Microsoft points you

• vetinari 7y ago
  Sorry, I don't know, it certainly wasn't me... While XAudio2 is a key library, it is not DirectX one, as we were talking about DirectX umbrella project. It is not as low-level library as other DirectX projects were anymore, it doesn't talk to the hardware directly. It is really just a user space library with convenient functions, made by Microsoft. It also has competition, there's OpenAL, which is similar - even if it doesn't have as nice API, it is cross-platform.
  • jfkebwjsbx 7y ago
    Yeah, I understand, that is why I said it is not DirectX, but being in DirectX or not is just marketing. The reason is that XAudio2 (and lower level ones and other non-audio ones) is developed, distributed and recommended by Microsoft, and it is used by many major games and audio engines. So I don't understand who cares about whether it is formally part of DirectX or not. I didn't claim there aren't alternatives like OpenAL or Wine's XAudio2 implementation. I simply said the original XAudio2 is not portable on its own, which means you cannot simply use it in Linux, for instance.