Mid dual-side microphone
AssigneeShure Acquisition Holdings, Inc.
InventorBrent Robert Shumard
Life of this patent
Estimating the term…
Abstract
A microphone device comprising, for example, a mid microphone cartridge and two side microphone cartridges. The mid microphone cartridge may be, for example, a cardioid microphone cartridge, and the side microphone cartridges may each be, for example, a bidirectional microphone cartridge. Each of the mid microphone cartridge and of the two side microphone cartridges may be orthogonal to the other two microphone cartridges. The microphone device, which may be referred to herein as a mid dual-side microphone, may provide a combined pickup pattern, such as a beam and/or a toroid, that may be steerable.
Claims22
A microphone comprising:
- a cardioid microphone cartridge;
- a first bidirectional microphone cartridge;
- and
- a second bidirectional microphone cartridge, wherein each of the first bidirectional microphone cartridge and the second bidirectional microphone cartridge is directed orthogonally to each other and to the cardioid microphone cartridge,
- wherein the microphone is configured to steer a direction of maximum sensitivity of the microphone by at least performing a weighted summation of a first audio signal corresponding to the first bidirectional microphone cartridge, a second audio signal corresponding to the second bidirectional microphone cartridge, and a third audio signal corresponding to the cardioid microphone cartridge.
A method for operating a microphone, the method comprising:
- generating a first audio signal based on sound detected by a first bidirectional microphone cartridge;
- generating a second audio signal based on sound detected by a second bidirectional microphone cartridge;
- generating a third audio signal based on sound detected by a cardioid microphone cartridge, wherein each of the first bidirectional microphone cartridge and the second bidirectional microphone cartridge is directed orthogonally to each other and to the cardioid microphone cartridge;
- and
- steering a direction of maximum sensitivity of the microphone by at least performing a weighted summation of the first audio signal, the second audio signal, and the third audio signal.
A method for operating a microphone, the method comprising:
- generating a first audio signal based on sound detected by a first bidirectional microphone cartridge;
- scaling, based on a control signal, the first audio signal to affect an azimuth angle of a pickup pattern of the microphone;
- generating a second audio signal based on sound detected by a second bidirectional microphone cartridge that is directed orthogonally to the first bidirectional microphone cartridge;
- generating a third audio signal by at least shifting the second audio signal by 90 degrees;
- and
- combining the scaled first audio signal with the third audio signal to generate the pickup pattern of the microphone.
Dependencies are inferred from the claim text.