1. Proprietary & Confidential
Resonant Frequency – A Unique Signature
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Active Acoustic Response vs. Excitation Frequency
29MBRC-13469 (SLS)
29MBRC-60169 (SLS)
29MBRC-11234 (Intact )
ResponseAmplitude
Excitation Frequency (kHz)
2.09 kHz
3.98 kHz
7.11 kHz
Intact vs. SLS valves
2-KHz
SLS
4-KHz
SLS
7-KHz
Intact