Start with maximum volume and highest pitch. This is the attention-getter. Use full lung pressure and say "KAANC" into the call.
Each subsequent note drops slightly in pitch and volume. "kanc-kanc-kanc" - maintain rhythm but decrease intensity by about 20% each note.
Final notes are softest, almost mumbled. "kank-kank-kank" - this creates the natural fading effect. Don't cut off abruptly.
Total sequence: 2-3 seconds. Space between notes: 0.2-0.3 seconds. Practice with a metronome at 120 BPM for consistent rhythm.