OhmPediaSignal and Measurement

Signal and Measurement

信号与测量 · V

Ratios expressed in decibels, bandwidths expressed in time, and the instruments that decide which number is real.

Entries in this section 2 / 8

1. DecibeldB = 20 log₁₀(V₂/V₁)

   A logarithmic ratio used to express gain, loss or level, so that multiplication becomes addition.

2. Low-Pass Filterf_c = 1 / (2πRC)

   A network that passes frequencies below a cutoff and attenuates those above it.