Combining the Alesis QSR with MIDI drum triggers and a trigger interface, or a pad
controller, produces a flexible, low-cost, open-architecture, electronic drum kit.
What hardware do I need?
The QSR Drum Synthesizer system can be configured in many different ways, from simple to
complex. The Alesis QSR synthesizer module acts as the
system sound module. A sound module receives digital control inputs and generates audio
signals that can be connected to any audio system.
Important: Since the QSR sends and receives
MIDI information, any device that generates MIDI commands can control the module.
This means that you can use triggers and controllers from any manufacturer as long as they
comply with the MIDI standard.
You can create a simple system by connecting a single MIDI controller, such as the Alesis
Control Pad, to the QSR. Alternatively, or in addition, triggers can be connected to the
system using trigger to MIDI interfaces. You can also use multiple QSR synthesizers in
parallel to increase the polyphony or storage space of the system.
The QSR Drum Synthesizer Manual discusses the specific system configuration I used to
develop my drum synthesizer system. This information will help you understand the
possibilities and allow you to design your own system, based on your needs and budget. You
may use a different configuration but the principles described here will be relevant.
Alesis Control Pad
This self-contained unit houses 8 piezo pads and integrated trigger to MIDI converters.
Just connect the MIDI Out port to the QSR MIDI Input and start playing drum samples in
minutes.
Alesis Trigger iO
This inexpensive trigger interface converts the signals from individual pads and
controllers to MIDI. While Alesis no longer sells the Trigger iO, it is available from ddrum
under the DDTI model name.
Pads and Controllers
There are a variety
of pad and controller types on the market. We'll discuss a few of the options, but before
buying your own components review the specifications for your particular trigger interface
to ensure compatibility.
MIDI and Audio Accessories
Be sure to consider MIDI cables, trigger cables, audio cables, and a MIDI interface to your
computer, as well as other MIDI devices that might be required. I use the MOTU FastLane MIDI
interface in this example, as well as MIDI mergers from MIDI Solutions.