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Acoustic beam forming array using feedback-controlled microphones for tuning and self-matching of frequency response
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 2014 |
| Description | A feedback-controlled microphone includes a microphone body and a membrane operatively connected to the body. The membrane is configured to be initially deflected by acoustic pressure such that the initial deflection is characterized by a frequency response. The microphone also includes a sensor configured to detect the frequency response of the initial deflection and generate an output voltage indicative thereof. The microphone additionally includes a compensator in electric communication with the sensor and configured to establish a regulated voltage in response to the output voltage. Furthermore, the microphone includes an actuator in electric communication with the compensator, wherein the actuator is configured to secondarily deflect the membrane in opposition to the initial deflection such that the frequency response is adjusted. An acoustic beam forming microphone array including a plurality of the above feedback-controlled microphones is also disclosed. |
| File Size | 689329 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150003428 |
| Archival Resource Key | ark:/13960/t3sv2kr7d |
| Language | English |
| Publisher Date | 2014-09-30 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Patents Actuators Deflection Acoustic Emission Frequency Response Feedback Control Tuning Compensators Sound Pressure Microphones Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
