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参见wiki:
! _5 ]* ~2 q x8 K5 ], c- KASIO bypasses the normal audio path from the user application through layers of intermediary Windows operating system software, so that the 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 audio mixing kernels (KMixer), allowing direct, high speed communication with audio hardware. Unlike KMixer, an unmixed ASIO output is "bit identical" or "bit transparent", that is, the bits sent to the sound card are identical to those of the original source, thus having higher audio fidelity. |
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