![]() ![]() * These examples assume that the speed of sound in air is 343 m/s. If you're sat 1m (just over an arm's length) from your speakers then the latency between the sound from your speaker and your ear is 3.4ms.If two people stand at the opposite ends of a bus (assuming its maximum length of 15 metres), there is a 43-millisecond delay when they speak (or shout) to each other. The time it takes for the sound of a snare drum to reach a drummer's ears, is about 2.1 milliseconds. To get an idea of how long one millisecond is, it's best to give some real-world examples you might be familiar with*: On a PC system, the buffer size is set either in Focusrite Notifier, or the Audio Control Panel. On a Mac system, the buffer size is set in your DAW - often in the Audio section of the Preferences page (DAWs may vary). If you set your buffer size in milliseconds and not samples, then you are controlling the overall latency in time, The buffer is adjusted for each sample rate so that you always get the latency that you have set in milliseconds. At lower sample rates, there are fewer samples in a second and therefore 512 samples is a longer period of time.At higher sample rates, there are more samples per second and therefore 512 samples is a shorter period of time.The amount of time (milliseconds) 512 samples equates to, depends on how long it takes for 512 samples to be processed. If you have set a buffer size of 512 samples. The higher the sample rate, the less time (milliseconds) that the buffer size equates to. Depending on the interface, the buffer size is set in either samples or milliseconds.Ī buffer size that is set in samples equates to a certain amount of time, but that amount of time is dependent on the sample rate (the number of samples recorded per second). To change the buffer size on a Mac, see the audio Settings page in your DAW. To reiterate, when setting your buffer size, what you are doing is giving the CPU of your computer a period of time to process audio, before it is passed to and from the interface and the recording software.Ī higher buffer size creates a longer latency, a lower buffer size creates a shorter latency. You will notice when it's working too hard because there will be problems with the audio, such as crackling, stretching and dropouts. The goal is to find a buffer size that is low enough that your CPU can handle it before it has to work too hard. Higher buffer size - higher latency but more stability with the audio signal.Lower buffer size - lower latency but a higher chance of glitches/drop-outs.Using a lower buffer size (and therefore getting less latency) gives your CPU less time to process the audio and therefore the CPU must work harder to process the audio in time. You can adjust the buffer size for your needs. Part of the time this takes is the 'buffer size', which you can set yourself. This delay is because the computer needs time to process the audio and route it back out of your interface. When you are recording audio with your interface, you might notice a slight delay in the audio coming back to you. The USB 2.0 version of the Saffire 6 DOES NOT require a driver on Mac.This article explains buffer sizes and latency, including how different sample rates have an effect on them. The USB 1.1 variant of the Saffire 6 DOES require a driver on Mac which you can find in the Downloads section of our website. Serial numbers beginning 'SU' are USB 1.1, and serials beginning 'S2' are USB 2.0. Please note: there are two revisions of the Saffire 6 USB, one is a USB 1.1 device and the other is a USB 2.0 device. In this folder, remove any files named 'FocusriteUSB2Audio.kext'.Select 'Computer' > Mac HD > System > Library > Extensions. ![]() To remove any potentially problematic drivers you may have installed, you can run our Class Compliant application, which is attached at the bottom of this article.Īlternatively, you can manually delete drivers by:
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