立たち下さがり

noun, noun which may take the genitive case particle 'no'

falling edge; trailing edge; decay

Technical term used in electronics and signal processing for the falling or trailing part of a waveform, pulse, or signal. Often contrasted with 立ち上がり (rising edge).

• この回かい路ろは信しん号ごうの立たち下さがりを検けん出しゅつします。

  This circuit detects the falling edge of the signal.

• 立たち下さがり時じ間かんが短みじかいほど高こう速そく動どう作さに適てきしている。

  The shorter the fall time, the more suitable it is for high-speed operation.