8_MIDIcomms

8_MIDIcomms - Data Communication/MIDI Juan P Bello MIDI The...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Data Communication/MIDI Juan P Bello MIDI The Musical Instrument Digital Interface (MIDI) is a standard for communication between electronic musical instruments, which has also been applied to a larger range of equipment (Fx units, mixers, light control, etc) Main functions: transmission of performance/control data around a digitally-controlled music systems and of other data such as timing info, set-up parameters, samples, etc. The MIDI standard was formulated by agreement between the manufacturers in the early 80s While use of the hardware interconnection scheme is in steady decline, the communications protocol is still widely used. Background (1) Electronic musical instruments, and the need to control them remotely, predated MIDI Old instruments used analog voltage control instead of microprocessors These often used one port for timing and another for note triggering and pitch info (as a DC control voltage) Background (2) With the advent of microprocessor-based control in musical instruments a number of digital control interfaces appeared Incompatibility amongst them created the need for standardization and agreement between major manufacturers This resulted on the MIDI 1.0 specification released in 1982/83. The standard core functionalities remain largely unchanged, although several others have been added over time, e.g.: MIDI files, general MIDI, sample dump, MIDI timecode, etc. The MIDI Manufacturers Association (MMA), is the governing body regulating modifications to the standard (http://www.midi.org/). MIDI vs Audio (1) In digital audio, the waveform is converted to the digital domain, where it is processed and stored before being converted back to analog Sounds are stored and replayed precisely, but we have no access to control data (the parameters that generated that sound) Since we need high temporal and amplitude precision to properly represent an audio waveform, digital audio uses a lot of memory space. MIDI vs Audio (2)...
View Full Document

This note was uploaded on 03/03/2012 for the course FMT E85 taught by Professor Juanpablobello during the Fall '09 term at NYU.

Page1 / 18

8_MIDIcomms - Data Communication/MIDI Juan P Bello MIDI The...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online