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Audio Stream Input/Output (ASIO) is a computer audio interface driver protocol for digital audio specified by Steinberg, providing high data throughput, synchronization, and low latency between a software application and a computer's audio interface or sound card.
ASIO is supported by most professional music applications. Most sound cards directed at this market support ASIO. If the hardware manufacturer doesn't provide ASIO drivers, there are other ASIO free alternatives, which can be used for any audio interface. ASIO drivers can be emulated, in this case the driver name is ASIO Multimedia.
Sound Blaster Audigy Player Sound Blaster Audigy 2 ZS Gold. Sound Blaster Audigy is a product line of sound cards from Creative Technology.The flagship model of the Audigy family used the EMU10K2 audio DSP, an improved version of the SB-Live's EMU10K1, while the value/SE editions were built with a less-expensive audio controller.
Pre-mixed PCM audio is sent to the driver in a single format (in terms of sample rate, bit depth and channel count) that is configurable from the Sounds control panel. WASAPI Exclusive mode bypasses the mixer, as does using third-party audio APIs like OpenAL or ASIO , which still have direct access to the hardware.
A popular optimization solution is Steinberg's ASIO, which bypasses the audio platform, and connects audio signals directly to the sound card's hardware. Many professional and semi-professional audio applications utilize the ASIO driver, allowing users to work with audio in real time. [13] Pro Tools HD offers a low latency system similar to ASIO.
PortAudio supports Core Audio, ALSA, and MME, DirectSound, ASIO and WASAPI on Windows. Like other libraries whose primary goal is portability, PortAudio is written in the C programming language. It has also been implemented in the languages PureBasic and Lazarus/Free Pascal. PortAudio is based on a callback paradigm, similar to JACK and ASIO.
Windows driver API basics - This article informs you about the basics behind sound card drivers such as WDM, ASIO, MME, DirectX, etc. Channel 9 Video - Interview with the Device Management and Installation team at Microsoft, primarily covering Plug-and-play .
ASIO ensures that the delay caused by the audio hardware during sound output is kept to a minimum to enable hardware manufacturers to provide specialized drivers. ASIO has established itself as the standard for audio drivers. [24]