Digital pulse processing

A digital pulse processing system is certainly worth considering. At the time of writing, it would seem that they offer many advantages and, apart from cost, few disadvantages. 

Table 14.4 Performance comparison of analogue and digital pulse processing systems a ...

As well as software-based aggregate subtraction, so-called pulse processing (or, more recently, digital) electronics can give us help in this task. In general, particles (cells or nuclei) give out signals that... 

Figure 2 A schematic of the digital sampling process (a) A signal, x is multiplied by a train of pulses, p producing the signal Xj,, (b) The analytical signal, x, (c) The carrier signal, p, (d) The resultant sampled signal is a train of pulses with amplitudes limited by x,...

The output of the single photon detection system electronics may be such as to form equal height, equal width pulses for each photon detected, whose output rate is high for high-intensity illumination and low at low-light levels. This form of signal is an ideal input for the digital autocorrelation process. 

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