Figure 2: SAC font comparison
Comparison of the old-style vector-based fonts (A) and postscript fonts added in 101.5 (B). The plot is an amplitude vs. frequency plot of the FIR filter used to prepare an event waveform the and for Butterworth causal 6-pole low-pass filters with corners at 100~Hz, 250~Hz, and 400~Hz. The FIR amplitudes were calculated using program EVALRESP and the low-pass filters by SAC, which uses the bilinear transform so that the amplitude goes to zero at the Nyquist frequency (500~Hz).-clone