Patent ID: 8206305

Claim:
A system having an acoustic transducer, the system comprising: a first plurality of first elements of a first array defining a first emitting face of the first array, the first elements spaced along an azimuth axis, some first elements of the first array rotated about the azimuth axis in a twisted relationship, relative to other first elements, the first emitting face angled in different directions based on the rotation; a second plurality of second elements of a second array defining a second emitting face of the second array, the second elements spaced along an azimuth axis, some second elements of the second array rotated about the azimuth axis in a twisted relationship, relative to other second elements, the second emitting face angled in different directions based on the rotation; and electrical conductors connected with respective first and second elements; wherein the first and second arrays are rotated about the azimuth axis in opposite directions such that the twisted relationship of the first elements to each other is opposite the twisted relationship of the second elements to each other.