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Hi All! Since LabVIEW uses only Windows MME driver for sound in and out, I'm looking for an other way to get sound data into LabVIEW with much less latency. Has someone use ASIO4ALL for audio input? For sound out I use Midi via MME and the Windows own synthesizer. Its latency is really not high. But the input data comes with some hundred milliseconds lateness. With MME: I tested on 2 systems. About 350ms latency and not really depending of the system load. I tried also with small sample packages of 600 and 1200 byte/chn and a sound card acquisition rate of 96kS/s. In order to collect this data amount the time what the PC needs should be theoretical 6,25/12,5ms plus data transfer time and some reaction times of the system modules. But the response time of MME seems in-depending on it. It needs always around 320...380ms. And the processor load was very low. Maybe someone can help me to use a faster software interface (ASIO?). Best greetings, Frank