Media Foundation is new with Windows Vista, whereas DirectSound, DirectMusic, and the waveXxx and mixerXxx functions are supported in Windows 98, Windows Millennium Edition, and in Windows 2000 and later. These higher-level APIs use the Core Audio APIs to share access to audio devices.
Windows multimedia waveXxx and mixerXxx functions. These APIs serve as the foundation for the following higher-level APIs: This documentation describes the Core Audio APIs. For more information about the improvements and new features added, see What's New for Core Audio APIs in Windows 7. The Core Audio APIs have been improved in Windows 7. Software abstraction of the audio endpoint devices (for example, speakers, headphones, and microphones) that the user manipulates directly. Assignment of particular system-wide roles (console, multimedia, and communications) to individual audio devices. Improved security (processing of protected audio content takes place in a secure, lower-privilege process). Improved reliability (many audio functions have moved from kernel mode to user mode). Low-latency, glitch-resilient audio streaming. These capabilities include the following: This is a new set of user-mode audio components provides client applications with improved audio capabilities. The Core Audio APIs were introduced in Windows Vista. Latest ASIO driver.This documentation provides information about Core Audio APIs for the Microsoft Windows family of operating systems. Unoptimized Windows10 with steam in background (forgot to turn it off). Little click played back and recorded using 32, 64 and 128 samples buffer settings. I would like to know if that is typical, if it varies with different interfaces or if it´s a general thing with asio being a bit faster. 
So i started an investigationĪsio is much faster on my system. I had notoced before that performance with ableton live was about the same with osx 32 samples buffer and windows 64 samples while reported latencys where lower on windows. This is a simple loop test with Reaper (driver compensation set to off!)
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