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Looper's Delight
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On Fri, Feb 4, 2011 at 12:41 PM, mark francombe <mark@markfrancombe.com> wrote: > The Subject says it all. Some things that will ease the latency blues: 1) I agree with you that an audio buffer of 256 samples for software sucks. You should set it to 128 (personally I'm fine with that, not worse than standing three meters from your guitar amp, or practicing sax turned at a wall to throw back the high freq sound). 2) If using an external sync signal (usually MIDI Clock), whenever stuff doesn't follow in sync you should adjust the device that sends out sync signal to send it a little earlier or later. Do this by ear, simply adjust "sync signal delay" (or whatever your software calls that function) until master stuff and synced stuf run well together. 3) Avoid latency inducing plug-ins! This only goes for live audio input work. DAWs that work with already recorded audio does compensate "under the hood" to fix the latency issue if a plugin delays the audio stream. That is mostly done by delaying the full mix as much needed to get the slowest plugin deliver on time. This all can not happen with a live audio input since the software doesn't know what sound will come in. 4) Speaking about one particular audio signal coming into your sound card: Use Direct Monitoring if you don't need to pass a stream through any software. This means the audio stream comes into the audio interface to be directly directed to the audio output, without passing through the latency producing digitizing process in the software. When using Direct Monitoring you need to watch up for blending the signal with the same signal having passed through the software because that will create bad sounding phasing errors, as the stream passing through the software comes out a bit delayed. It is either Direct Monitoring or just software processed sound - these two shall never blend. 5) If using the Mobius looper, be sure to set up its latency compensation. Since only the looped sound is compensated this works fine with a live audio input, as Mobius has plenty of time to calculate and move your overdubbed audio to the right place regarded earlier layers in the loop (and synced tracks etc etc). Best is to set up Mobius latency compensation by ear: record a rhythmic layer and overdub a second layer. If the second layer comes back earlier or later than the first loop layer you adjust the latency value accordingly. It is not possible to achieve exact sync between layers (i.e. latency compensation) because the references seem to drift and float a bit - but you should be able to come pretty close. I like the setting where overdubbed layers drift forwards as much as they drift backwards; find the point of balance. Greetings from Sweden Per Boysen www.boysen.se www.perboysen.com www.looproom.com internet music hub