What are the benefits to using an audio interface?
Higher quality of audio
For a truly professional level of sound quality from RMS Keyboards, using an audio interface is a great idea.
The interface may also allow you more control over your mix, with the ability to separate out keyboard 1 from keyboard 2 and so forth. With a headphone mix, all the instruments being played through RMS Keyboards come out in a single stereo mix.
More sophisticated mix
Many RMS Keyboard patches are comprised of several layers. With a computer by itself, you usually get the layers together as a singel stereo signal. But since most audio interfaces have multiple outputs, you can route sounds separately, where they can be mixed and/or processed individually.
Lower CPU load
Without an audio interface, all of the processing power for rendering the audio comes from the computer’s CPU and will be fighting against all the other programs and processes running on the computer.
Tied in with the point above, putting less demands on your computer CPU results in higher computer stability when running RMS Keyboards. It’s a very straightforward trade-off.
For RMS Keyboards, latency can be defined as the amount of time that passes between pushing a key on the MIDI controller, and hearing the note out of your sound system. Low latencies (under 30 ms or so) will produce sounds quickly enough to be transparent to the keyboard player. Higher latencies will start to feel sluggish to the keyboard player, and the music will drag.
Using an interface guarantees latency to be in the “transparent” range.
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