By
brazeca
Fri Jun 27, 2008 3:24 pm
I must say, it's not Logic. Now, after you explained what you are up to, it's easy to recommend a workaround or two. Ok, let me start with Logic settings. Try setting audio driver to the lowest I/O buffer size possible, which wouldn't result in audio artefacts like pops and clicks. The problem which you are facing is latency: the amount of time (dozens of milliseconds, actually) between the moment you start playback and the moment the audio, that gets into Logic, starts being recorded. You know, Logic requires some time to prepare the disk space, create a file, etc. This time gap results in loosing the very beginning of the part, and when it's more than 3-6 ms, parts from different tracks can come out of time with each other. Especially rhythmic parts like drums, percussion and bass.
If you are recording using the built-in audio interface (or any other interface which doesn't allow low recording latency: 3-6 ms), then try recording each part separately without syncing MPC to Logic. You can first switch on the recording to Logic, then after it has begun, switch on the playback of your soloed track from MPC. After doing all the recording, you can use Zoom In feature in the Logic's Sample editor, or in the Arrange itself, and adjust the audio region's start point (you don't have to physically cut the initial silence out from recorded audio - leave audio file alone, just drag the region's left side to the point where the sound begins). In Logic you can do that with sample accuracy (there are some modifier keys combinations that allow you to regulate accuracy while dragging/adjusting elements of regions or while moving entire regions in the Arrange, so please refer to Logic's Manual for that, because I don't remember these key combinations by heart).
If some of the tracks in MPC's sequence don't start with a sound with sharp attack (like a kick drum or a hat) or there's a silence before any sound begins, you can use the following technique for recording: put a short sound with a fast attack (like a hat sound or a kick drum) in the beginning of each track which has silence in the beginning (or where it's hard to find the start point visually after recording) - you have to do it in MPC and program this tag sound manually in the Step mode: place it exactly at 001.01.01 position of each track, where it needs to be put. This way, when the track is recorded into Logic, you will know the exact position for the start point of audio region. Obviously, the rhythmic parts don't need such tags, because they already have sounds with fast attack in the beginning. After recording, you will be able to align the tracks manually, using these tags, so that they lock into each other in playback. And the tag sounds can be removed from the beginning of the tracks in Logic's sample editor by selecting them and inserting silence instead.