First, the data can be excluded, so you just get the individual note, and this automatically pitch‑quantises MIDI notes to the nearest semitone. There are three options, in terms of pitch‑bend data, when outputting the extracted MIDI information. If you've used VariAudio's Pitch & Warp or Segment tools, the changes you've made to the segments will be reflected in the timing and pitch of the MIDI notes created. Having identified the pitch of individual notes in an audio performance, VariAudio can then export that data to a suitable MIDI part via the Function / Extract MIDI command. The basic principles of the extraction process are straightforward. The same eight-note audio phrase extracted using each of the three pitch‑bend data modes. Surprisingly, for such a potentially useful feature, the MIDI extraction process is given pretty short shrift in Cubase's Operation Manual. In addition, extracted MIDI data can be used with Cubase's scoring features to provide notation of parts for other musicians. It can also be a useful way for a guitarist to create melody lines for synths, without using a keyboard or entering the murky waters of MIDI guitar controllers. So why would you want to extract MIDI from your audio? Although none of the current audio-to-MIDI conversion tools are without their particular quirks, they have a number of uses, which include extracting MIDI from a bass-guitar performance, enabling you to double the part with a bass synth (if the bottom end of your mix needs a little beefing up, for example). This type of audio-to-MIDI conversion has been around for quite some time (Logic, for example, has offered it for many years now, and it's also possible in Celemony's Melodyne), but this is the first time the functionality has been built into Cubase. In other words, using VariAudio, you can take a monophonic audio performance and extract MIDI timing and pitch information from it, leaving you with a MIDI part in place of your audio file. While pitch and timing changes are obviously VariAudio's raison d'être, the tool has a further trick up its sleeve: MIDI extraction. VariAudio's Extract MIDI function provides three different ways of dealing with pitch-bend data.īack in SOS August 2009, I took a look at pitch‑correction using Cubase 5's new VariAudio tool, which can be found in the sample editor.
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