Realtek HD Audio Codecs, software and driver package for Realtek HD Series sound cards. For Windows 2000/XP/2003/Vista/7/8 32/64-bit Linux Editor's rating. Both assistive technology devices and services. Okay, I've checked and triple-checked all my plugs/connections, etc, to my speakers. 1 Download file for Windows 7 / 8 / 8.1 / 10 / Vista / XP, save and unpack it if needed. The Vortex Multifunction PCI Parent is a sound card that has good sound quality and 3D performance. ESI wins GOOD DESIGN award. The GOOD DESIGN award honors both products and industry leaders in design and manufacturing that have chartered new directions for innovation and pushed the envelope for competitive products in the world marketplace.

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Audio Stream Input/Output (ASIO) is a computer sound card driver protocol for digital audio specified by Steinberg, providing a low-latency and high fidelity interface between a software application and a computer's sound card. Whereas Microsoft’s DirectSound is commonly used as an intermediary signal path for non-professional users, ASIO allows musicians and sound engineers to access external hardware directly.

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ASIO bypasses the normal audio path from a user application through layers of intermediary Windows operating system software so that an application connects directly to the sound card hardware. Each layer that is bypassed means a reduction in latency (the delay between an application sending audio information and it being reproduced by the sound card, or input signals from the sound card being available to the application). In this way ASIO offers a relatively simple way of accessing multiple audio inputs and outputs independently. Its main strength lies in its method of bypassing the inherently high latency and poor-quality mixing and sample rate conversion of Windows NT 5.x audio mixing kernels (KMixer)[citation needed], allowing direct, high speed communication with audio hardware. Unlike KMixer, an unmixed ASIO output is 'bit identical' or 'bit perfect'; that is, the bits sent to or received from the audio interface are identical to those of the original source, thus potentially providing higher audio fidelity. In addition, ASIO supports 24-bit samples, unlike Windows NT 5.x MME and DirectSound which truncate 24-bit samples to the upper 16 bits, whereas Windows NT 6.x mixer provides 32-bit floating point output. Higher bit-depth samples offer the potential for a higher signal-to-noise ratio.