3 gain = 'sin(0.001*f) - 1':
7 gain = 'if (ch, -0.7 * sin(0.001*f), -0.2 * sin(0.001*f)) - 1':
16 gain_entry = 'entry(1000, 0); entry(5000, 0.1); entry(10000, 0.2)',
19 gain = 'if (ch, -0.3 * sin(0.001*f), -0.8 * sin(0.001*f)) - 1':
24 gain_entry = 'entry(1000, 0.2); entry(5000, 0.1); entry(10000, 0)',