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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.
JACK Audio Connection Kit (or JACK; a recursive acronym) is a professional sound server API and pair of daemon implementations to provide real-time, low-latency connections for both audio and MIDI data between applications.
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.
It supports the DirectSound, ASIO and WASAPI audio interfaces, and it uses 32-bit audio processing for its 18-band equalizer and built-in sound effects (Reverb, Flanger, Chorus, Pitch, Tempo, Echo, Speed, Bass, Enhancer, Voice Remover). AIMP can store the currently played media file in RAM, up to 250 MB, ensuring smooth playback.
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.
When the sound card uses a custom driver for use with the system supplied port class driver PortCls.sys or implements a mini-driver for use with the streaming class driver, applications can bypass the KMixer completely and use the kernel streaming interfaces instead to directly interact with audio driver and reduce latency. Windows 98 includes ...
Sound Blaster Live! was the first sound card from Creative with the "What U Hear" recording input source. This was supported in the Windows drivers, so no additional software was needed to utilize it. The analog stereo audio signal that came out of the main Line Out was directed into this input.