![]() We had two systems on test at SOS: the battery-powered G2M V2 - an updated version of the original Sonuus G2M box - and the i2M Musicport, which connects (and is powered) via USB, and which also has some useful software support in the form of the i2M Musicport Desktop Editor (the range is completed by the B2M dedicated bass-to-MIDI unit). Bass lines, and lead melody lines or instrumental solos, tend to be inherently monophonic anyway, and that's a lot of musical ground covered straight away. The designers at UK-based Sonuus, however, calculate that there's an awful lot you can still do with a monophonic system, and I'm inclined to agree with them. Pitch-to-MIDI conversion systems normally require guitarists to fit an additional, hexaphonic (six-channel) pickup that outputs a separate signal for each string, so that the notes within a chord can each be individually analysed and converted to MIDI. There may come a day when digital audio processing algorithms are sophisticated enough to pick out multiple discrete notes within a composite audio stream in real time (Celemony Software's Melodyne can already do it as an off-line process), but that day is not here yet. It is as simple as that, and most of the time it works straight out of the box, but the trade-off for this simplicity is that it can only work monophonically (ie. The units require no special pickup or cabling: you simply plug your guitar in one end of the small box and MIDI comes out of the other end. The Sonuus range of audio-to-MIDI converters makes entering into the world of MIDI sounds and MIDI recording about as simple as it could be for a guitarist. Sonuus' nifty gadgets make real-time audio-to-MIDI conversion easy and affordable - as long as you only play one note at a time!
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