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The Ideal Reason Studio > Hard Drive - Pg. 21

ASIO Drivers In 1996, the German company Steinberg developed and released a driver format called ASIO, or Audio Stream Input/Output. ASIO started a trend in digital audio technology by introducing an affordable way to use both the processing power of the computer's CPU and the DSP (Digital Signal Processing) of the sound card to produce a real-time audio performance in both PCs and Macs. To make things even better, Steinberg made the ASIO source code available to any company who wanted to write and design ASIO drivers for their audio cards and programs. The ASIO technology took off like a rocket to Mars, and is currently supported in more than 100 audio cards and numerous digital audio programs, such as Reason. DirectX Drivers If you are on the Windows platform and your sound card does not support ASIO drivers (it's pretty hard to find a card that doesn't these days), you will need to use the card's DirectX drivers instead. Developed by Microsoft using their DirectSound technology, DirectX is a common driver format. The driver is included with every consumer and professional digital sound card on the market today and is very easy to use and configure for pro audio and computer gaming. Later in this chapter, I show you how to set up your audio card for Reason and you will have another look at your audio card's DirectX driver. WDM Drivers In 2001, Microsoft released yet another driver format: WDM (Windows Driver Model). Built from the technology in the Windows NT operating system and supported in Windows 98/Me/XP, the WDM format is another in a long list of drivers supported by Reason 2.5.