SignalScope Pro provides tremendous flexibility when it comes to viewing audio signals in real time. Dual signal displays can be configured independently for a variety of visualization options. View single or dual-channel output from two analyzers simul- taneously, or arrange a single analyzer for viewing dual-channel output with one channel in each display.

SignalScope Pro also adds octave and third-octave band spectral analysis, like a traditional RTA. The filtering is performed in real time by digital Butterworth filters, as recommended by ANSI standards. This offers results superior to synthesized fractional octave band filtering using an FFT.

Also new to SignalScope Pro is frequency weighting based on the standard A and C frequency weighting curves. These curves were developed to mimic human perception of loudness at low and high sound levels, respectively. Weighting can be applied to the time-domain input signals before spectral analysis is performed, or applied to the results of a previously computed FFT magnitude.