Patent ID: 8472640

Claim:
An elevated toroid microphone comprising: a first microphone element assembly including a first microphone element arranged adjacent to a supporting surface and a first filter connected to the first microphone element, the first filter having a frequency response H 0 ; a second microphone element assembly including a second microphone element arranged a predetermined distance d from the supporting surface and a second filter connected to the second microphone element, the second filter having a frequency response H 1 ; a third microphone element assembly including a third microphone element arranged at twice the predetermined distance d from the supporting surface and a third filter connected to the third microphone element, the third filter having a frequency response H 2 ; an adder configured to combine outputs of the first, second and third microphone assemblies into an adder output; and an equalizer configured to generate an equalized output in response to the adder output, wherein a combination of H 0 , H 1 , and H 2 generates an elevated toroid directivity pattern for the elevated toroid microphone.