make the point well of how limiting the battery life
can be for
a MIDI wireless controller right now.
$2.99 will get you a 15 foot (~5 meter) USB 2.0 cable
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2000010001+…+-+15+ft.
theres also 16 foot cables, with a buffered repeater on the end, of which 5 can be chained
for 90 feet. no idea about latency in this case..
plus, it will power the device.
what about MIDI over bluetooth? i'm thinking OSC over bluetooth, and a rechargable AA
battery in each device, so long as thats enough to last ~1 hr