Communication device using bone conduction
First Claim
Patent Images
1. A communication device comprising:
- a microphone, a conduction interface, an electromechanical force transducer mounted to the conduction interface to drive the interface to conduct sound to a user by bone conduction, wherein the transducer has an intended operative frequency range and comprises a resonant element having a frequency distribution of modes in the operative frequency range, and a coupler for mounting transducer to the interface, wherein the parameters of the resonant element are selected to enhance the distribution of modes in the resonant element in the operative frequency range, and wherein the distribution of modes in the resonant element has a density of modes which is sufficient for the resonant element to provide an effective mean average force which is substantially constant with frequency.
5 Assignments
0 Petitions
Accused Products
Abstract
A communication device comprising a microphone, a conduction interface and an electromechanical force transducer mounted to the conduction interface to drive the interface to conduct sound to a user by bone conduction, characterised in that the transducer has an intended operative frequency range and comprises a resonant element having a frequency distribution of modes in the operative frequency range and coupling means for mounting the transducer to the interface.
104 Citations
16 Claims
-
1. A communication device comprising:
-
a microphone, a conduction interface, an electromechanical force transducer mounted to the conduction interface to drive the interface to conduct sound to a user by bone conduction, wherein the transducer has an intended operative frequency range and comprises a resonant element having a frequency distribution of modes in the operative frequency range, and a coupler for mounting transducer to the interface, wherein the parameters of the resonant element are selected to enhance the distribution of modes in the resonant element in the operative frequency range, and wherein the distribution of modes in the resonant element has a density of modes which is sufficient for the resonant element to provide an effective mean average force which is substantially constant with frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A communication device comprising:
-
a microphone, a conduction interface, an electromechanical force transducer to the conduction interface to drive the interface to conduct sound to user by bone conduction, wherein the transducer has an intended operative frequency range and comprises a resonant element having a frequency distribution of modes in the operative frequency range, and a coupler for mounting the transducer to the interface, wherein the resonant element is modal along two substantially normal axes, each axis having an associated fundamental frequencies and the ratio of two associated fundamental frequencies being adjusted for best modal distribution. - View Dependent Claims (15)
-
-
16. A communication device comprising:
-
a microphone, a conduction interface, an electromechanical force transducer mounted to the conduction interface to drive the interface to conduct sound to a user by bone conduction, wherein the transducer has an intended operative frequency range and comprises a resonant element having a frequency distribution of modes in the operative frequency range, and a coupler for mounting the transducer to the interface, wherein the transducer comprises a plurality of resonant elements each having a distribution of modes of the resonant elements being arranged to interleave in the operative frequency range whereby the distribution of modes in the transducer as a whole device is enhanced.
-
Specification