On Windows you have the ability to use different audio driver standards, WASAPI or ASIO.
ASIO is a proprietary audio interface standard which bypasses the operating system’s mixing kernel, so providing lowest latency direct communication between computer audio software and hardware. Some Hardware manufactures supply an ASIO driver, or you can use ASIO4ALL.
WASAPI is the Microsoft solution to get lower latency. It has 2 modes:
- WASAPI Shared mode, that shares the audio in/output with other applications, restricting the setting of Sample frequency and data bits to be determined by the Systems Sound Playback/Recording Advanced Properties ->
- WASAPI Exclusive mode, that handles an in/output exclusively giving LUCI the ability to determine sample frequency and data bits.
When WASAPI is selected you can set the hardware’s desired latency or leave it to it’s default. At Shared mode you also see the Samples frequency set at the device properties.