1. Rachel's cell phone is actively pinging.

2. A few mosquitoes are pinging shrilly.

3. 9 Noise was muted, telephones pinging daintily against the artificial air.

4. The man from Forensic arrives, his steel heel-caps pinging across the tarmac.

5. Along streams in the desert Southwest, a sharp pinging note in the thickets announces the presence of Abert's Towhee