Method of detecting and deterring microphone sabotage

1. A microphone grommet comprising:

an enclosure having an internal cavity, the internal cavity dimensioned to receive an input end of the microphone therein; and

a membrane integral with the enclosure spanning the internal cavity across the input end of the microphone having a visual contrast with the input end of the microphone for indicating tampering.

2. The microphone grommet according to claim 1 , wherein the enclosure comprises a plastic material.

3. The microphone grommet according to claim 2 , wherein the plastic material comprises neoprene.

4. The microphone grommet according to claim 1 , wherein the membrane comprises a mesh material.

5. The microphone grommet according to claim 4 , wherein the mesh material comprises one or more of a gauze mesh and a stainless steel mesh.

6. The microphone grommet according to claim 5 , wherein the mesh material comprises a stainless steel mesh, the stainless steel mesh comprising a coating on at least a portion thereof.

7. The microphone grommet according to claim 6 , wherein the coating comprises a color which contrasts with that of the input end of the microphone.

8. The microphone grommet according to claim 6 , wherein the coating comprises one or more of an epoxy coating and an anodized coating.

9. The microphone grommet according to claim 1 , wherein the membrane comprises a color which contrasts with that of the input end of the microphone.

10. The microphone grommet according to claim 1 , wherein the enclosure further comprises an acoustic cavity.

11. The microphone grommet according to claim 10 , wherein the acoustic cavity extends from a first end of the enclosure to the membrane.

12. A method of detecting damage to a microphone, the method comprising:

(a) providing an enclosure having an internal cavity, the internal cavity dimensioned to receive an input end of the microphone therein, and a mesh material integral with the enclosure spanning the cavity across the input end of the microphone for indicating tampering and having a visual contrast with the input end of the microphone; and

(b) fitting the enclosure over the input end of the microphone.

13. The method according to claim 12 , further comprising securing the enclosure and microphone in an outer enclosure.

14. The method according to claim 13 , wherein the outer enclosure is a glassbreak detector.

15. The method according to claim 13 , wherein the outer enclosure has an opening to admit sound to the microphone.

16. A glassbreak detector comprising:

a microphone;

a protective grommet fit over the input end of the microphone, the protective grommet comprising:

a grommet enclosure having an internal cavity, the internal cavity dimensioned to receive an input end of the microphone therein; and

a membrane integral with the enclosure spanning the internal cavity across the input end of the microphone having a visual contrast with the input end of the microphone for indicating tampering; and

an outer enclosure surrounding the microphone and microphone grommet.

17. The glassbreak detector according to claim 16 , wherein the outer enclosure has an opening to admit sound to the microphone.

18. The glassbreak detector according to claim 16 , wherein the grommet enclosure further comprises a first acoustic cavity extending from a first end of the grommet enclosure to the membrane.

19. The glassbreak detector according to claim 18 , wherein the outer enclosure further comprises a second acoustic cavity contiguous with the first acoustic cavity of the grommet enclosure.

20. The grommet of claim 1 , wherein the membrane is substantially transparent acoustically.