DIGITAL BASS PROJECT
DIGITAL BASS PROJECT (2007)
Jan-Bas Bollen presents 9 pieces for bass guitar and laptop, with which he modified the sounds in real-time. The music, partially notated, partially improvised, incorporates both his expertise as a composer as well as his experiences as a performing artist.
Technical notes: The Digital Bass Project involved the extension of a fretted, 4-string Fender Standard Precicion Bass with two sensors, an expression pedal and a numerical keypad. Ableton Live, ran on an Apple 867 MHz Powerbook G4, was used as a host for several audio and MIDI plugins that were controlled by the sensors, pedal and keypad.
Both the sensors' voltages as well as the voltage from the pedal were processed by Eroktronix' MidiTron into MIDI messages before reception by a MIDI interface. The keypad was connected to USB of the G4.
The sensors used are:
- for the bass body, a Sharp GP2D12 Infrared General Purpose Type Distance Measuring Sensor, used in providing voltage for MIDI channel 2, controller no. 1;
- for the bass head, a Sharp GP2Y0A02YK Infrared Long Distance Measuring Sensor,
used in providing voltage for MIDI channel 1, controller no. 1.
The pedal provided voltage for MIDI channel 2, controller no. 0.
The keypad was used for patch changing, plugin activation / deactivation and sequencer control.
Both the keypad and GP2D12 were mounted on the bass body for easy access by the right hand of the performer. The GP2Y0A02YK was pointed towards the floor so that elevation of the bass head resulted in controller changes.