An audio system is provided that employs time-frequency analysis andor synthesis techniques for processing audio obtained from a microphone array. In one implementation, the present invention allows for a differentiated network services scheme that adapts to existing network conditions and, in one implementation, selects higher, generally more expensive classes of differentiated network service for certain data flows when the performance of selected applications degrades below a threshold level. During the creation of the newerupdated version of firmwaresoftware in the flash memory card, the electronic device may be operational. Predictive interaction variables are calculated on the predictive data using simulated consumer profiles before and after assuming a sizeable simulated balance to infer the consumer’s tolerance for incremental future debt. The inlet valves and the compression ratio are controlled by a control unit, so that the fuelair mixture, within a lower engine rpm range, is compressed to self-ignition. These polycarbonate compositions can exhibit improved ductility andor ageing resistance compared to conventional polycarbonate compositions.