Lowpass Filter Specifications

• $\delta_s$ : stopband ripple ( $\leq 0.001 = -60$ dB typical)
• $\delta_p$ : passband ripple ($\leq 0.1$ dB typical)
• $\omega_s$ : stopband edge frequency
• $\omega_p$ : passband edge frequency
• TW: transition width $= \omega_s - \omega_p$
• SBA: stop-band attenuation $= -20 \log( \delta_s )$