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From: "Neil Goldstein" <ngold@...>
Date: Sun, 1 Oct 2000 at 5:54:47 PM
Subject: Digital drums
Message #40637
I mention the following as it may help others who are wanting to record digital drums with a 'real' drummer: I regularly play with a digital drummer where he triggers a Roland TD-8 VDrum module, with acoustic cymbals and high hat mic'd, and all is recorded as audio in a VS-1680. Now we want to record some stuff with separation of drum parts, but there is limited input channels for live recording in the 1680, so figured its time to record the midi into Logic. We ran some experiments in recording his pads as midi data, with the main objective being that the drummer would be satisfied that the midi triggered module would be an identical performance to what he plays, hears, and what is recorded in audio in real time. (I'm running LAM 4.5 on a PBG3 with VXPocket with a MTPII). For this test we had the same cymbals and high hat recorded as an obvious way to hear how the audio vs midi jelled. He played some beats with lots of 16th note triplets, and other swing things. We listened to the audio recording on the 1680 and compared it to the same track with midi triggering the module. And it sounded like crap. All the notes were recorded with OK velocity, including ghost notes, but the timing was off on denser passages. I thought the problem was in the midi interface or that I was quantizing on input. Made sure quantize was off and I put the MTPII in "Fast" mode, but the same problem persisted. Then it hit me, what should have been obvious from the start. We didn't turn Local control off on the TD-8. When we turned Local Off, and he played direct into Logic with midi through triggering the module, everything sounded tight and accurate. Yess! Before turning Local Control off, I was recording drums into a No Outup instrument, so there was no midi loop present. Then assigning that track to the TD-8 Instrument. Guess there's enough of a delay in midi triggered data, compared to physically triggered drum audio to make for a significant mis-match. The thing I don't understand is that the notes that sounded out of time came during dense passages. There wasn't a consistent delay, just certain notes were out of the pocket. Must also be that the drummer is monitoring the midi and playing with it so his feel is adapted to the few millisecond delay that is inherent in midi, in comparison to the physical trigger of the drum pads. Neil
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