Simultaneous attention requires focus on multiple simultaneous activities or occurrences. Performance of sequential and simultaneous movement is impaired. The difference between simultaneous and sequential games is captured in the different representations discussed above. There are two methods for simultaneous detection and quantification. Visual perception allows processing of simultaneous information. In music, consonance and dissonance are categorizations of simultaneous or successive sounds. This approach allows clusters of simultaneous beams to be created. This may be performed either as simultaneous or consecutive interpreting. This redundancy validates the data transmitted and eliminates simultaneous transmissions. Cellular can greatly increase the capacity of simultaneous wireless phone calls. Resistive networks are represented by a system of simultaneous algebraic equations. Canon claims it is capable of recording simultaneous MP4 and AVCHD video streams. These field equations are a set of 10 simultaneous, non-linear, differential equations. Two duets are sung by a pair of soloists representing two simultaneous speakers. The Einstein field equations are a set of 10 simultaneous, non-linear, differential equations.