Instrumentation amplifiers are intended to be used whenever acquisition of a useful signal is difficult. IA’s must have extremely high input impedances because source impedances may be high and/or unbalanced. bias and offset currents are low and relatively stable so that the source impedance need not be constant. Balanced differential inputs are provided so that the signal source may be referenced to any reasonable level independent of the IA output load reference. Common mode rejection, a measure of input balance, is very high so that noise pickup and ground drops, characteristic of remote sensor applications, are minimized.Care is taken to provide high, well characterized stability of critical parameters under varying conditions, such as changing temperatures and supply voltages. Finally, all components that are critical to the performance of the IA are internal to the device. The precision of an IA is provided at the expense of flexibility. By committing to the one specific task of
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Rock Band 2 is a popular video game enjoyed by millions on their Xbox
360 console game systems. However, unlocking all of the available songs
is a task that many players do not have time or patience for. In
addition, many players wish they had talented players to achieve high
scores with. We have designed a system that is able to beat Rock Band
songs on any difficulty, playing up to four instruments at a time.
Implemented on an FPGA, the design is capable of highly accurate,
real-time results. Video is read directly from the Xbox without any
external sensors mounted on the TV. Modifications were made to the Rock
Band instruments that maintain their original functionality and wireless
radios were used to allow users to play the game far away from the
Xbox. Advanced detection algorithms allow this device to achieve
near-perfect scores and compete with any human.