If the delay becomes too long (>10ms) you will start to notice the delay when you play the keyboard compared to when the audio arrive at the speakers. That means the bigger buffer, the longer wait. And now the timer problem arises: the mentioned timer waits for the buffer based on its size. This means that the buffer size must be increased more. If the cost is still too high the CPU cannot process the data fast enough and fill a buffer before it gets rotated resulting in that the buffer contains no data or in some cases uncleared data which will cause noise and gaps in the audio. The process of rotating buffer is however expensive CPU-wise and to compensate for this one increase buffer size. The software fills a buffer (f.ex after a MIDI note is received) and signal that it has finished and then receives a new buffer to fill. This is because the buffers are of a certain size which is related to data-rate and therefor synchronization - so this is important. The buffers are rotated based on a timer, so no matter what, the buffers get rotated regardless of what currently is in the buffer. This is 2 or 3 buffers that are filled with data and then rotated so that while one buffer is played at the sound card, another buffer is filled with new data. And here's why: How buffers workĪudio data is processed using double or triple buffering. Number one adjustment is always the buffer size. Cubase midi monitor drivers#In other words, it doesn't have so much to do with Cubase as to how the drivers work and are configured as well as the system's hardware. Cubase uses ASIO-drivers (an invention by Steinberg themselves) which mean they are optimized for the sound card if the manufacturer of the sound card makes ASIO-drivers available.įor sound cards that doesn't support ASIO there are workarounds such as DirectX ASIO (built-in in Cubase IIRC) and Asio4All driver wrapper. Latency is due to the audio driver for the audio card.
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