These are two terms that have yet to find any consistent usage. For the purposes of this glossary, an e-instrument is an electronic one, be it digital or analogue, physical or software-based; an i-instrument is one used only on the internet.
See also:
Interactive Instruments, Interactivity, Interface, Internet MusicBibliography: Barbosa, Alvaro (2005). {Public Sound Objects}: a shared environment for networked music practice on the Web
Freeman, Jason, Varnik, Kristjan, Ramakrishnan, C., Neuhaus, Max, Burk, Phil, Birchfield, David (2005). Auracle: a voice-controlled, networked sound instrument
Kapur, Ajay, Wang, Ge, Davidson, Philip, Cook, Perry R. (2005). Interactive Network Performance: a dream worth dreaming?
Wright, Matthew (2005). Open Sound Control: an enabling technology for musical networking

