University:
Massachusetts Institute of Technology
Course:
21M.380 | Music and Technology: Live Electronics Performance Practices
Academic year:

2019
Views:

23

Pages:

12
Author:

Yusuf Mack

Chapter 11. Meeting 11, Practices: Touch Interfaces and OpenSoundControl 11.1. Announcements • Due Wednesday, 16 March: Controller/Interface/Instrument Design 1 Report Will accept as late as midnight Friday, 18 March Must submit code and report See syllabus for report details • Begin exploring instruments in Martingale poly/performance-d 11.2. Using Probabilistic and Random Control • Can use randomness to select items • Can use randomness to limit or filter items • Varying the intensity of random influence becomes an expressive parameter • [mgGateProbabilistic1] • What would mgGateProbabilistic3.pd do? 11.3. Making Continuous Values Discrete • [mgQuantizeUnitOct] 11.4. Poly Performance D: Pulse Driven with Probabilistic Events • Instrument 6: mgSynthBufferPulse8 Joystick controller photo © Logitech. All rights reserved. • Instrument 5: mgSynthBufferPulse8 Joystick controller photo © Logitech. All rights reserved. 11.5. Poly Performance D: Looping Buffer with Dynamic Playback Rate and Window Size • Instrument 4: mgSynthBufferLoop8 Joystick controller photo © Logitech. All rights reserved. 11.6. MIDI Devices • Review Meeting 9 11.7. Reading: Wright, Open Sound Control • Wright, M. 2005. “Open Sound Control: an enabling technology for musical networking.” Organised Sound 10(3): pp. 193-200. • The author criticizes many existing roles of network technology in music: what are his criticisms? • What are some of the design goals of OSC? • What advantages does OSC have over MIDI? • What are the benefits and disadvantages of symbolic parameter names • What are some shortcomings of OSC? • What is the difference between jitter and latency? Which is acceptable for musical controllers and why? 11.8. OSC Devices • Numerous hardware and software devices send and receive OSC • TouchOSC http://hexler.net/software/touchosc • MRMR http://mrmr.noisepages.com 11.9. TouchOSC • Available for Android and iPhone/iPad http://hexler.net/software/touchosc http://hexler.net/software/touchosc-android • Desktop editor permits designing custom interfaces Courtesy of Hexler. Used with permission. • • Basic interfaces controls: • Buttons: push, toggle, multi-toggle • Faders: linear, multi-linear, and rotary • XY pad Basic OSC encoding • Each pane defines a top-level OSC division: /1, /2 • Each control is named and defines a second level: /toggle2, /push3 • Some controls define a third level: /multifader1/4, /multifader1/6 • Following the message name is value (unit interval ranges are the best) 11.10. Setting Up TouchOSC • Create wifi/Airport network with a manual IP address: 192.168.2.1 (alternatives are fine) • Subnet mask: 255.255.255.0 • Join network with mobile device • With touchOSC on mobile device, enter IP address as host • Set outgoing port to 8000 and incoming port to 9000 (alternatives are fine) 11.11. Getting and Processing OSC Values • [dumpOSC 8000]: receives raw OSC values on port 8000 • Can only have one instance of [dumpOSC 8000]; must have argument for port number • Use [OSCroute] to parse hierarchical structure • Example: [mgHwTouchOscDualAnalg] Emulate dual-analog style control with TouchOSC • Example: [mgHwTouchOscAccelerometer] Unpack round, filter, scale, and limit accelerometer data 11.12. TouchOSC Instruments Emulating Dual Analog Instruments • instruments/touchosc/mono/synthNoiseFilter.pd • instruments/touchosc/mono/synthSaw.pd • instruments/touchosc/mono/synthBufferPulse8.pd 11.13. TouchOSC Instruments Employing Accelerometer Data • instruments/touchosc/mono/airSynthBufferLoop8.pd 11.14. Listening: Ryoji Ikeda • Listening: Ryoji Ikeda, “data.syntax,” Dataplex, 2006 • Listening: Ryoji Ikeda, “data.reflex,” Dataplex, 2006

Meeting 11, Practices: Touch Interfaces and Open Sound Control

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