Summary
Sound-based technology that detects edges by analyzing audio waveforms alongside video footage, used in DRS for caught-behind and LBW decisions.
Full Explanation
The Snickometer (Snicko) was invented by English computer scientist Allan Plaskett in 1999. It uses a sensitive microphone in the stump to detect the sound of the ball hitting the bat edge.
UltraEdge is the advanced version developed by the ICC, which synchronizes the audio waveform with high-speed video footage at 300 frames per second. When the ball passes the bat, any spike in the audio that corresponds with the ball being near the bat confirms an edge.
UltraEdge replaced the original Snickometer and the HotSpot infrared system as the primary edge-detection tool in DRS. It's considered more reliable than HotSpot, which sometimes failed to detect faint edges.
Key Points
- •Uses stump microphone to detect sound of ball hitting bat
- •Synchronized with 300fps video for accuracy
- •Replaced HotSpot as primary edge-detection technology
- •Can distinguish between bat hitting ball vs bat hitting pad or ground
- •Key component of DRS for caught-behind and LBW decisions
Notable Controversies
- •Early versions occasionally picked up bat hitting pad as an edge
- •HotSpot vs Snicko debate — different boards preferred different systems
- •Stuart Broad given not out in 2013 Ashes despite clear UltraEdge evidence — Australia had no reviews left
Related Rules
Decision Review System (DRS)
A technology-based system that allows players to challenge on-field umpiring decisions using ball-tracking, UltraEdge, and video replays.
Hawk-Eye Ball Tracking
Computer vision technology that tracks the trajectory of the cricket ball and predicts its future path, used primarily for LBW decisions in DRS.
Caught Out
A batsman is out caught if a fielder catches the ball on the full after it has touched the bat or glove holding the bat.