The problem: I was using one of Chris McHugh’s acoustic drum loops from the (sadly, no longer available) Discrete Drums sample library. However, it had been recorded at a slower tempo, and when sped up, it was a bit too “busy” in places.
The solution: Drum Replacement with Studio One, Pro EQ, Gate, and Melodyne, so I could edit Note data into the part I wanted.
Getting Started: Step by Step
Prepping the Note Data
The note data length will vary. To tidy up the part, set all the drums to 16th or 32nd notes with Action > Length (fig. 4).
Note that Melodyne picked up on some low-velocity kick hits too (pretty cool). You could assign these to a different sample of a kick hit softly. Fortunately, the Discrete Drums library includes samples of the individual drums. So, I could load the samples into Impact XT, and this way the sound would work with other loops from the same collection. Since the drums are multi-sampled at different velocities, I selected all the notes, and used Studio One’s Transpose function to set them to the same pitch as the kick samples.
Hi-hat was the most difficult to convert to Note data, because snare hits can produce transients that extend into the hi-hat range. A 48 dB/octave low-cut combined with a major high-frequency peak did a decent job of isolating the hi-hat, but the frequency was extremely high and Melodyne wasn’t too happy about that. Transposing the Event down an octave or so before applying the gate made the hits more Melodyne-friendly.
I was taken aback at how well this technique was able to translate the acoustic drum loop into Note data. The best aspects were that it preserved the human timing of a real drummer, and Melodyne did a good job of preserving the dynamics. The only needed fix was removing a few notes caused by loud snare hits that came through on the hi-hat track, and of course, editing the data to create the part I wanted—done!