Snicko vs UltraEdge Cricket Technology Difference Explained

Every time there's a caught-behind review, the commentary team throws around three terms — Snicko, UltraEdge, and Real-Time Snicko — as if they're interchangeable. They aren't. Each is a different generation of the same basic idea, and each has a different role in modern DRS. This explainer walks through all three, step by step, so you never have to guess again during a match.

The core idea — audio-edge detection

When a ball touches a bat, pad, or glove, it makes a tiny sound. A high-sensitivity microphone near the stumps picks up that sound. Meanwhile, high-speed cameras capture the visual of the ball passing the bat at the exact same moment. If you synchronise the audio with the video, you can tell:

• When the ball was at its closest point to the bat.
• Whether there was a spike in the audio at that exact moment.

If there was a spike at bat level, the ball touched the bat. If the spike came slightly later, it may have been a pad hit. If there was no spike, the ball didn't touch anything.

That's the foundation. All three technologies build on this.

Snicko — the original system

Snicko (short for "Snickometer") was the original audio-based edge detection tool, introduced on cricket broadcasts in the late 1990s. It showed a simple waveform graph alongside the video. If the waveform spiked sharply at the moment the ball passed the bat, the commentary team inferred an edge.

Advantages:

• Simple to read.
• Based on raw sound frequencies — hard to fake.

Disadvantages:

• Slow to produce. The full analysis took multiple minutes.
• Was used as broadcast commentary — not as a DRS decision-making tool.

This is why traditional Snicko was never used in live DRS reviews. Too slow.

Real-Time Snicko (RTS)

Real-Time Snicko, introduced in the 2010s, solved the speed problem. By pre-processing audio and synchronising it faster with video, the system could produce the waveform almost immediately after a delivery.

This meant the third umpire could see, in real time:

• Ball approaching the bat (video frame).
• Any audio spike at that exact moment (waveform).
• Whether the spike corresponded to a bat edge, a pad, or background noise.

Real-Time Snicko became usable for DRS decision-making. It was the first audio-based tool used at scale in live reviews.

UltraEdge — the current standard

UltraEdge is the next-generation system that combines high-speed cameras with ultra-sensitive audio filtered through advanced algorithms. It's what you see most often in the IPL and modern international cricket.

Key improvements over Real-Time Snicko:

• Higher audio clarity. The system isolates frequencies more effectively to reduce background noise.
• Better visual sync. The waveform is perfectly aligned with super-slow-motion video.
• Improved noise separation. UltraEdge can often (not always) tell the difference between bat-on-ball, bat-on-pad, and bat-on-ground.

In modern DRS, UltraEdge is the primary tool the third umpire uses for caught-behind decisions.

What each technology can tell you

Tool	What it detects	Speed	Used in DRS?
Classic Snicko	Audio spike	Slow	Broadcast only
Real-Time Snicko	Audio spike synced to video	Near-real-time	Yes, historically
UltraEdge	Filtered audio spike + precise video sync	Real-time	Yes, current standard

What audio edge detection can't do

• It can't tell you which part of the bat made contact (visual cameras and Hot Spot do that).
• It can't always separate bat-on-pad from bat-on-ball when both happen simultaneously. This is why a third umpire may look at Hot Spot or frame-by-frame replay.
• It can be confused by crowd noise or nearby fielders when microphone quality is poor.

Why DRS uses multiple tools together

No single tool decides a caught-behind review. The third umpire looks at:

• UltraEdge. Was there an audio spike at bat level?
• Super-slow-motion video. Did the ball visibly deviate?
• Hot Spot (if available). Is there a heat mark on the bat?

If all three agree, the decision is clear. If they disagree, the third umpire falls back on the on-field umpire's original call.

FAQ

Q: Is Snicko the same as UltraEdge? A: No. Snicko was the original audio graph. UltraEdge is the current, faster, higher-quality version used in DRS.

Q: Does UltraEdge replace Hot Spot? A: Not entirely. They complement each other. UltraEdge uses audio; Hot Spot uses infrared heat signatures.

Q: Can UltraEdge tell bat from pad? A: Often, but not always. That's why Hot Spot and slow-motion visuals also get consulted.

Related reading

• IPL 2026 Pitch Report Decoder: What Terms Mean
• IPL Head-to-Head Records: Complete Guide
• DRS Decision Review System Complete Guide: How It Works