Electronic noise cancellation techniques for aircraft enclosures and / or other enclosures

Abstract

The present disclosure relates to improved techniques for electronic noise cancellation in aircraft and other enclosures. In some embodiments, an electronic noise cancellation device can be disposed within an aircraft. In some embodiments, the electronic noise cancellation device includes a housing that integrates one or more audio input devices configured to receive an input audio signal, one or more audio output devices configured to output a noise cancellation signal, one or more lighting components, and at least one connector that enables the electronic noise cancellation device to be coupled to an overhead service component of the aircraft. In some embodiments, the electronic noise cancellation device is adapted to be received within a lighting socket of an overhead service component included within an aircraft enclosure. Other embodiments are also disclosed.

Description

Technical Field

[0001] (Cross - Reference to Related Applications) This application claims the benefit and priority of U.S. Provisional Patent Application No. 63 / 343,363, filed on May 18, 2022, and U.S. Provisional Patent Application No. 63 / 407,904, filed on September 19, 2022, and claims the priority of U.S. Non - Provisional Patent Application No. 18 / 195,051, filed on May 9, 2023. The content of the applications identified above is hereby incorporated by reference in its entirety herein.

[0002] (Technical Field) The present disclosure describes, among other things, an electronic noise cancellation system that can be utilized to cancel noise within an enclosure. In some embodiments, the electronic noise cancellation system can be disposed inside an aircraft and / or inside other vehicles to cancel noise within the interior of the vehicle. The electronic noise cancellation system can be similarly disposed in other environments.

Background Art

[0003] (Background) Noise cancellation technology can be used to cancel ambient noise. Generally, there are two types of noise cancellation techniques, namely, passive noise cancellation and active noise cancellation.

[0004] Passive noise cancellation generally involves using barriers, materials, or physical designs to block the audio signal from reaching an individual's ear canal. Passive noise cancellation can be applied to various types of devices and structures. For example, earbuds can be inserted into an individual's ear to block or limit noise from reaching the individual's ear canal. Similarly, sound - absorbing foam can be adhered to walls (e.g., in a music or instrument setting) to block or limit noise from leaving the room.

[0005] Active noise cancellation uses electronic technology to cancel out noise. Generally, this technology attempts to detect the sound pattern of incoming noise, generate a corresponding output sound, and cancel out the incoming noise. A common use of this technology is applied to noise-canceling headphones.

[0006] Noise cancellation can be desirable in various settings and environments. Applying noise cancellation technology to vehicles can be beneficial due to the high ambient noise produced by the vehicle's mechanical components during operation. For example, in many types of aircraft, the noise generated by the propeller, engine, and / or other mechanical components during operation can be heard within the aircraft cabin or interior at a very high volume. This is particularly true for aircraft using turboprop engine systems. Pilots often use noise-canceling headsets to filter out and eliminate the ambient noise generated by the aircraft, but passengers within the aircraft cabin remain exposed to the noise. The noise generated by the aircraft during operation can prevent the pilot or crew from effectively communicating information to the passengers sitting within the aircraft cabin.

[0007] Similarly, other vehicle mechanical components also produce high noise during operation. For example, in automobiles, the wheels and / or engine often produce high noise that can be heard within the passenger cabin of the automobile. Similarly, in seaplanes (e.g., boats, yachts, etc.), the engine, turbine, and / or other mechanical components can generate high noise that can be heard inside the ship.

[0008] The effectiveness of passive noise cancellation techniques in vehicles is limited, and noise emitted from the mechanical components of a vehicle can often be heard in the passenger compartment even when noise-blocking materials are used. Additionally, in many cases, due to the limited availability of space within the vehicle passenger compartment and / or because upgrading the vehicle with noise-blocking materials would require substantial time, cost, and retrofit effort, it is not practical to incorporate sufficient noise-blocking materials within the vehicle. Furthermore, it can be technically difficult to incorporate an active noise cancellation system within the vehicle. One technical challenge relates to avoiding feedback that can occur when both a speaker or microphone associated with the active noise cancellation system are installed within the interior of the vehicle passenger compartment. SUMMARY OF THE INVENTION MEANS FOR SOLVING THE PROBLEM

[0009] The present disclosure relates to systems, methods, devices, and techniques for providing electronic noise cancellation. In certain embodiments, an electronic noise cancellation system can be disposed within an enclosure for use in eliminating unwanted noise using active noise cancellation techniques. For example, in certain embodiments, the electronic noise cancellation system can be disposed inside an aircraft enclosure (e.g., within one or more overhead service compartments) for eliminating unwanted noise generated from aircraft mechanical components (e.g., turboprop engines, propellers, etc.).

[0010] An electronic noise cancellation system can include one or more audio input devices and one or more audio output devices that are strategically installed within an enclosure, as well as one or more sensors configured to monitor parameters associated with one or more noise sources. The noise sources may be located outside and / or inside the enclosure. The electronic noise cancellation system can utilize signals from the one or more sensors to generate a noise cancellation signal that cancels ambient noise within the enclosure generated by the noise sources. The noise cancellation solutions described herein can avoid or reduce audio feedback while allowing one or more input devices and one or more audio output devices to be installed within the same enclosure.

[0011] The noise cancellation techniques discussed herein can be used in a variety of different situations and environments. Generally speaking, an electronic noise cancellation system can be disposed within any enclosure to cancel noise within the enclosure. One useful application of these techniques exists in the context of vehicles. For example, the electronic noise cancellation system described herein can be disposed inside an aircraft (e.g., within an aircraft cabin and / or cockpit) to cancel noise generated by a propeller, engine, and / or other mechanical components during operation of the aircraft. This can facilitate better communication between the pilot and passengers and improve the comfort of the pilot, crew, and passengers.

[0012] In another example, an electronic noise cancellation system can be disposed inside an automobile (e.g., a passenger car, truck, bus, and / or other ground-based vehicle) to cancel noise generated by wheels, an engine, and / or other mechanical components during operation of the automobile. The electronic noise cancellation system can similarly be disposed within other types of vehicles (e.g., trains, boats, ocean vessels, watercraft, etc.) to cancel noise generated by a noise source (e.g., an engine, turbine, motor, etc.).

[0013] Noise cancellation techniques can also be used in situations not related to vehicles. For example, in some scenarios, an electronic noise cancellation system can be deployed within a room to cancel out room noise (e.g., noise generated from elevators, central air conditioning units, humidifiers, fans, furnaces, boilers, water heaters, etc.). The techniques discussed herein can also be similarly applied in other environments.

[0014] An electronic noise cancellation system can include at least one noise cancellation device or apparatus disposed within an aircraft's overhead service compartment (also referred to as a passenger service unit or PSU). In some embodiments, each device or apparatus can include one or more audio input devices (e.g., one or more microphones), one or more audio output devices (e.g., one or more speakers), and one or more lighting components (e.g., one or more LEDs and / or other light sources). Each device or apparatus can include or communicate with one or more processing devices that perform a noise cancellation function, and the device or apparatus can be disposed within the passenger service unit to facilitate cancellation of noise within the aircraft. For example, one or more passenger service units originally disposed within the aircraft can be modified using the noise cancellation devices or apparatuses described herein to enhance the functionality of the passenger service unit.

[0015] The noise cancellation device can be positioned within or connected to the passenger service unit in one or more configurations. In certain embodiments, the noise cancellation device can be partially enclosed or obscured when disposed within the passenger service unit. For example, a first obscured portion of the noise cancellation device that can be internally mounted within the PSU and / or above the bottom surface of the PSU can include, among other things, mechanical, power, and electronic connectors for coupling the device to the PSU, a power source within the aircraft, and / or a processing device that performs the noise cancellation function. A second exposed portion of the noise cancellation device that can be mounted external to the PSU and / or extend beyond the bottom surface of the PSU can include at least one lighting component, at least one audio input device, and at least one audio output device. The second exposed portion can output a noise cancellation signal in the vicinity of the PSU and can include a lighting switch that enables activation and deactivation of the lighting component.

[0016] The embodiments described in this disclosure can be combined in various ways. Any aspect or feature described with respect to one embodiment can be incorporated into any other embodiment referred to in this disclosure. Also, any of the embodiments described herein may be hardware-based, software-based, or may comprise a mixture of both hardware and software elements. Thus, while the description herein may describe an embodiment, feature, or component as being implemented in software or hardware, it should be recognized that any embodiment, feature, and / or component referred to in this disclosure may be implemented in hardware and / or software.

Brief Description of the Drawings

[0017] To facilitate further description of the embodiments, the following drawings are provided in which like reference symbols are intended to refer to like or corresponding parts.

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DETAILED DESCRIPTION OF THE INVENTION

[0027] For purposes of simplification and clarification of the illustrations, the figures in the drawings illustrate a general manner of the structure, and descriptions and details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the present invention. In addition, the elements in the figures of the drawings are not necessarily drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve the understanding of the embodiments of the present invention. The same reference numerals in different figures represent the same elements.

[0028] Where appropriate, the terms "first", "second", "third", "fourth", and the like in the description and claims are used to distinguish similar elements and are not necessarily used to describe a particular sequential or chronological order. It should be understood that such terms are synonymous in appropriate circumstances so that the embodiments described herein can operate in a sequence other than, for example, that illustrated or otherwise described herein.

[0029] Where appropriate, the terms "left", "right", "front", "rear", "back", "top", "bottom", "upper", "lower", and the like in the description and claims are used for illustrative purposes and are not necessarily used to describe a permanent relative position. It should be understood that such terms are synonymous in appropriate circumstances so that the embodiments of the apparatus, method, and / or article of manufacture described herein can operate in other orientations than, for example, those illustrated or otherwise described herein.

[0030] The terms "connect", "connected", "connects", "connecting", "couple", "coupled", "couples", "coupling", and equivalents are to be broadly understood and refer to electrically, electronically, mechanically, and / or otherwise coupling two or more elements or signals. Connecting / coupling can be for any length of time, e.g., permanent or semi-permanent, or for just an instant.

[0031] The terms "pilot", "pilots", "operator", "operators", or equivalents are to be broadly understood to refer to any individual or user and not necessarily to an individual qualified to operate or fly an aircraft or other vehicle. (Detailed Description of Exemplary Embodiments)

[0032] FIG. 1 is a schematic diagram of an exemplary system 10 according to an embodiment. System 10 includes an electronic noise cancellation system 100 disposed inside an enclosure 150. One or more noise sources 160 may be installed outside and / or attached to the outside of the enclosure 150. One or more sensors 170 are installed near or coupled to one or more noise sources 160. The electronic noise cancellation system 100 includes one or more processing devices 110, one or more storage devices 120, one or more audio input devices 130, and one or more audio output devices 140. One or more storage devices 120 store instructions associated with implementing a noise cancellation function 125. All components illustrated in FIG. 1 can be configured to communicate directly with each other and / or via a network through wired or wireless communication links, or a combination of the two.

[0033] One or more processing devices 110 may include one or more central processing units (CPUs), one or more microprocessors, one or more microcontrollers, one or more controllers, one or more complex instruction set computing (CISC) microprocessors, one or more reduced instruction set computing (RISC) microprocessors, one or more very long instruction word (VLIW) microprocessors, one or more graphics processor units (GPUs), one or more digital signal processors, one or more application specific integrated circuits (ASICs), and / or any other type of processor or processing circuit capable of performing the desired functions. The one or more processing devices 110 may be configured to execute any computer program instructions stored on or included in the storage device 120, including, but not limited to, instructions associated with performing a noise cancellation function 125.

[0034] One or more storage devices 120 may include (i) non-volatile memory such as, for example, read-only memory (ROM) and / or (ii) volatile memory such as, for example, random access memory (RAM). The non-volatile memory may be removable and / or non-removable non-volatile memory. On the other hand, the RAM may include dynamic RAM (DRAM), static RAM (SRAM), etc. Further, the ROM may include mask-programmed ROM, programmable ROM (PROM), one-time programmable ROM (OTP), erasable programmable read-only memory (EPROM), electrically erasable programmable ROM (EEPROM) (e.g., electrically modifiable ROM (EAROM) and / or flash memory), etc. In certain embodiments, the storage device 120 may be a physical non-transitory medium.

[0035] One or more audio input devices 130 may include one or more microphones, one or more audio sensors, one or more audio cards, and / or the like. In certain embodiments, the audio input device 130 is configured to receive an input audio signal 135 (e.g., an analog audio signal) within the enclosure 150 and convert the analog signal to a digital audio signal (e.g., using an analog / digital converter). The input audio signal 135 captured by the audio input device 130 can include noise 105 originating from one or more noise sources 160 as well as other ambient noise within the enclosure 150. As will be described in further detail below, one or more processing devices 110 can execute a noise cancellation function 125 to generate a noise cancellation signal 145 that cancels out the noise 105 originating from one or more noise sources 160.

[0036] One or more audio output devices 140 may include one or more speakers, one or more sound cards, and / or the like. One or more audio output devices 140 can be configured to output a noise cancellation signal 145 generated using the noise cancellation function 125. As mentioned above, the noise cancellation signal 145 can be output within the enclosure 150 to cancel out the noise 105 inside the enclosure 150 originating from one or more noise sources 160.

[0037] In certain embodiments, the noise cancellation function 125 is configured to detect or determine the frequency and / or phase of the unwanted noise 105 captured within the input audio signal 135 and generate an output audio signal that is approximately 180 degrees out of phase with respect to the unwanted noise 105. The in-phase inverted signal can be output as the noise cancellation signal 145, which serves to cancel out the unwanted noise 105 within the enclosure 150.

[0038] In one embodiment, one or more sensors 170 installed near or coupled to the noise source 160 can be configured to monitor various adjustment parameters 126 associated with the noise source 160 and relay this information to the electronic noise cancellation system 100. The noise cancellation function 125 can utilize the adjustment parameters 126 to generate a noise cancellation signal 145 with higher accuracy and precision.

[0039] The type of sensor 170 (and the type of adjustment parameter 126 monitored by the sensor 170) can vary based on the environment where noise cancellation is desired and / or based on the type of noise source 160. Exemplary sensors 170 that can be used to monitor the noise source 160 and / or derive the associated adjustment parameters 126 can include one or more velocity sensors, one or more touch sensors, one or more pressure sensors, one or more infrared (IR) sensors, one or more proximity sensors, one or more audio sensors, one or more piezoelectric sensors, and / or other types of sensors. In some embodiments (such as when the electronic noise cancellation system 100 is disposed in a vehicle passenger compartment or an enclosure), the sensor 170 can be coupled to or located near a mechanical component of the vehicle. In these scenarios, the sensor 170 may include one or more propeller-mounted sensors, one or more engine-mounted sensors, one or more wheel-mounted sensors, etc.

[0040] In some embodiments, each sensor 170 can be configured to detect or monitor the frequency and / or phase of the noise source 160. This frequency and / or phase information can represent (or be used to derive) the adjustment parameter 126 that is utilized by the noise cancellation function 125 to generate the noise cancellation signal 145. For example, the noise cancellation function 125 can utilize the adjustment parameter 126 to accurately identify the noise 105 in the input audio signal 135 generated from the noise source 160 and / or generate an output signal with a phase inversion that can cancel out the noise 105.

[0041] In some cases, the noise cancellation function 125 can be pre-programmed or calibrated to identify and cancel a specific frequency band that is prevalent for a particular type of noise source 160. For example, the noise 105 generated from a known noise source 160 may be monitored to determine the frequency band resulting from the noise source 160. In this scenario, the noise cancellation function 125 can be pre-programmed to be more sensitive to a specific frequency band associated with the noise source 160. This tendency for a specific frequency band can be used in combination with the adjustment parameter 126 to perform the noise cancellation function 125 with higher accuracy and precision.

[0042] The techniques described herein can be used to cancel the noise 105 within various types of enclosures 150. In some scenarios described herein, the enclosure 150 may represent a vehicle passenger compartment, housing, or interior (e.g., aircraft housing or interior and / or automotive housing or interior, etc.). Additionally, or alternatively, the enclosure 150 can represent a room within a residential or commercial building. The techniques described herein can be similarly applied to other types of enclosures 150.

[0043] The following description provides additional details regarding specific use cases of the electronic noise cancellation system 100 within various types of systems and enclosures.

[0044] FIG. 2 is a block diagram of an electronic noise cancellation system 100 disposed within an aircraft enclosure 150A, according to an embodiment. In this exemplary system, the electronic noise cancellation system 100 is disposed inside an aircraft and includes one or more turboprop engines 160A, each of which produces ambient noise 105 that can be heard within the aircraft enclosure 150A. Each turboprop engine 160A can include a turbine engine that drives an aircraft propeller 161. Examples of aircraft that include turboprop engines 160A include the Beechcraft King Air and the Pilatus PC-12. In these and other aircraft, the frequency of the aircraft propeller 161 is a major cause of the noise 105 within the aircraft enclosure 150A.

[0045] One or more propeller-mounted sensors 170A can be coupled to or near each turboprop engine 160A to monitor adjustment parameters 126 associated with the turboprop engine 160A. For example, in some cases, the propeller-mounted sensor 170A can include a speed sensor or other sensor configured to monitor the frequency and / or phase of a propeller 161 driven by the turboprop engine 160A. The propeller 161 (and the turboprop engine 160A) represents a noise source 160 that produces unwanted noise 105 that can be heard within the aircraft enclosure 150A. The frequency, phase, and / or other adjustment parameters 126 monitored by the one or more propeller-mounted sensors 170A can be received by a noise cancellation function 125 along with an input audio signal 135 collected by one or more audio input devices 130 within the aircraft enclosure 150A. The noise cancellation function 125 may utilize the adjustment parameters 126 to identify unwanted noise 105 within the input audio signal 135 originating from the propeller 161 (and / or the turboprop engine 160A). The noise cancellation function 125 may also utilize the adjustment parameters 126 to generate an anti-phase signal that can be output as a noise cancellation signal 145 for canceling unwanted noise 105 inside the aircraft enclosure 150A. Using the adjustment parameters 126 to adjust or regulate the noise cancellation signal 145 output by the audio output device 140 can serve to eliminate or reduce audio feedback.

[0046] In some embodiments, the aircraft may be equipped with a propeller synchronization system 180. In particular, the propeller synchronization system 180 can be configured to monitor the speed or frequency of the propellers 161 (or corresponding engines) included within a multi-engine propeller system and adjust the speed or frequency of the propellers 161 (or corresponding engines) so that they all rotate at the same speed. The propeller synchronization system 180 can include one or more pre-deployed propeller-mounted sensors 170A that monitor the frequency and / or phase of the propellers 161 and / or the corresponding engines driving the propellers 161. In this scenario, the adjustment parameter 126 may be read from the propeller synchronization system 180. In other embodiments, the electronic noise cancellation system 100 can interface directly with one or more propeller-mounted sensors 170A and read the adjustment parameter 126 directly from the sensors.

[0047] In some embodiments, the noise cancellation function 125 is prevalent in a particular type of aircraft and / or can be pre-programmed or pre-calibrated to detect and cancel frequency bands that are generally associated with a particular type of aircraft mechanical system (e.g., a particular type of turboprop engine 160A and / or propeller 161). For example, during the calibration phase, the noise cancellation function 125 can monitor and determine the frequency bands associated with the particular aircraft type in which the noise cancellation system 100 will be deployed. This can help the noise cancellation function 125 to be customized or adjusted to the frequency bands associated with that specific aircraft and / or specific type of aircraft.

[0048] Note that the noise cancellation techniques described herein can be applied to any type of aircraft and are not limited to turboprop aircraft. Additionally, the noise cancellation techniques can be applied to cancel noise generated from various types of noise sources 160 that can be located inside or outside the aircraft enclosure 150A, and these techniques are not limited to canceling the noise 105 generated from the propeller 161 and / or the turboprop engine 160A. For example, in some cases, one or more sensors 170 can be coupled to other external mechanical components (such as other types of engines or equivalents) or near them to cancel the noise 105 inside the aircraft enclosure 150A generated from the external mechanical components. Similarly, one or more sensors 170 can be coupled to these internal mechanical components (such as landing gear, air conditioning units, etc.) or near them to cancel the noise 105 generated from the internal mechanical components.

[0049] Furthermore, the electronic noise cancellation system 100 can be disposed in various parts inside the aircraft. In some cases, the noise cancellation system 100 (including the associated audio input device 130 and audio output device 140) can be integrated into the walls and / or ceiling portions of the aircraft enclosure 150A. The electronic noise cancellation system 100 can, in addition or as an alternative, be integrated into one or more passenger seats included within the aircraft enclosure 150A. The electronic noise cancellation system 100 can, in addition or as an alternative, be integrated in or near the cabin crew service station included within the aircraft enclosure 150A. The following description illustrates an example demonstrating how the electronic noise cancellation system 100 can be integrated into one or more overhead service components or passenger service units of the aircraft.

[0050] FIG. 3 is a block diagram demonstrating a way in which an electronic noise cancellation system 100 can be integrated within one or more overhead service components 200 (also referred to as passenger service units or PSUs) of an aircraft.

[0051] Various aircraft include overhead service components 200 located above passenger seats within the aircraft cabin. The overhead service components 200 can provide various passenger amenities 220 to passengers, such as lighting components, air conditioning vents, buttons for requesting assistance from flight attendants, deployable oxygen masks, lighting signs (e.g., seatbelt signs or no-smoking signs), and / or loudspeakers for relaying announcements. As described below, the noise cancellation system 100 can be integrated within one or more of the overhead service components 200 included within the aircraft enclosure 150A. In some scenarios, the overhead service components 200 can be arranged to replace conventional passenger service units and upgrade the aircraft with noise cancellation functionality (or can be modified to include the noise cancellation system 100 described herein).

[0052] In one embodiment, the overhead service component 200 can include a housing 210 having a top surface 201 and a bottom surface 202. The bottom surface 202 can face the floor of the aircraft (e.g., face downward toward the passengers). The bottom surface 202 can include the passenger amenities 220 and one or more audio output devices 140 (e.g., speakers) configured to output a noise cancellation signal 145 and other audio output signals (e.g., announcements by the pilot or flight attendants). The top surface 201 can face upward toward the ceiling of the aircraft and can be invisible to passengers when the overhead service component 200 is deployed. The top surface 201 can include one or more audio input devices 130 (e.g., microphones).

[0053] One or more audio output devices 140 mounted on the bottom surface 202 of the housing 210 can output a noise cancellation signal 145 generated by the noise cancellation system 100. One or more audio input devices 130 mounted on the upper surface 201 can receive an input audio signal 135 that may include unwanted noise 105 generated from one or more noise sources 160 (e.g., propellers, engines, landing gear, air conditioning units, etc.). One or more noise sources 160 may be mounted outside and / or inside the aircraft enclosure 150A. In some scenarios, the housing 210 separates one or more audio input devices 130 mounted on the upper surface 201 from one or more audio output devices 140 mounted on the bottom surface 202, which may be useful for reducing audio feedback.

[0054] To further assist in reducing feedback, one or more audio input devices 130 can be mounted at a defined or predetermined angle relative to one or more audio output devices 140. In some cases, the audio input device 130 on the upper surface 201 can be oriented upward on the upper surface 201 at an angle of 90 degrees or more (e.g., 90 degrees, 120 degrees, 150 degrees, or 180 degrees) relative to the audio output device 140 facing downward on the bottom surface 202. Mounting the audio input device 130 and the audio output device 140 in this way helps to reduce feedback and can improve the performance of the noise cancellation function 125.

[0055] In some embodiments, each overhead service component 200 can include a stand-alone electronic noise cancellation system 100 that independently executes a noise cancellation function 125. In this scenario, each overhead service component 200 can include a processing device 110 that separately executes the noise cancellation function 125 (which can be stored, for example, on the storage device 120) using adjustment parameters 126 obtained from one or more sensors 170.

[0056] In other embodiments, a plurality of overhead service components 200 can be networked and / or coupled to a centralized processing device 110 that executes the noise cancellation function 125. In this scenario, each of the plurality of overhead service components 200 may include an audio input device 130 and an audio output device 140 that communicate with the centralized processing device 110. The centralized processing device 110 can receive an input audio signal 135 collected by the audio input device 130, as well as adjustment parameters 126 collected by one or more sensors 170 (e.g., the propeller-mounted sensor 170A). The centralized processing device 110 utilizes this information to generate a noise cancellation signal 145 that can be relayed to a plurality of audio output devices 140 to cancel noise 105 within the aircraft interior.

[0057] Figures 4-5 and 6A-6B disclose an exemplary noise cancellation device 101 that can be included within the noise cancellation system 100 according to an embodiment. Figures 4 and 5 are exploded views of the noise cancellation device 101 according to an embodiment. Figures 6A and 6B illustrate the noise cancellation device 101 in an assembled configuration according to an embodiment.

[0058] The noise cancellation device 101 can be incorporated into one or more overhead service components 200 inside the aircraft enclosure 150A to upgrade the overhead service component 200 using active noise cancellation technology. For example, the noise cancellation device 101 can be configured to replace a conventional lighting component originally included within the manufactured overhead service component 200. The noise cancellation device 101 can generate or output a noise cancellation signal 145 in the same manner as described above. For example, the noise cancellation device 101 can communicate with or include one or more processing devices 110 that generate a noise cancellation signal in the same manner as described herein (e.g., using adjustment parameter 126, sensor output, propeller synchronization system output, etc.), and the noise cancellation device 101 can output these noise cancellation signals directly in the vicinity of the PSU. In addition to providing noise cancellation functionality, the noise cancellation device 101 can also provide a lighting component that emits light in the vicinity of the underlying passenger seats.

[0059] The exemplary electronic noise cancellation device 101 includes a light emitting diode (LED) diffuser 300, an LED printed wiring board (PWB) 302, a microphone 303, a microphone bezel 304, a speaker 306, a speaker housing 308, a first fastener 310, a second fastener 312, an aircraft color 314, a speaker PWB 316, a third fastener 318, and a PSU connector 322. As will be described below, these components can be integrated or connected to form a housing for the electronic noise cancellation device 101.

[0060] In some embodiments, the electronic noise cancellation device 101 can include one or more of the foregoing components. Additionally, in some embodiments, one or more of these components illustrated in FIGS. 4-5 and 6A-6B can be excluded from or removed from the noise cancellation device 101. Alternative components (e.g., alternative types of lighting sources or fastening means) can also be used in place of the specific components illustrated in these figures. The noise cancellation device 101 can also be equipped with additional components not shown. For example, in some scenarios, in addition, it can include one or more processing devices 110, one or more storage devices 120, and / or additional components associated with providing other types of passenger amenities 220 described herein.

[0061] The electronic noise cancellation device 101 can be connected to and powered by an existing electrical system within the aircraft. For example, in one case, the electronic noise cancellation device 101 can be powered by an electrical connection within or near the overhead service component 200 (e.g., an electrical connection previously used to power the original lighting component included within the overhead service component 200).

[0062] To assemble the exemplary noise cancellation device 101 illustrated in FIGS. 4-5 and 6A-6B, the speaker 306 can be positioned within the speaker housing 308, and the second fastener 312 can serve to couple the speaker 306 to the speaker housing 308. In some embodiments, the second fastener 312 can correspond to a speaker mount screw. However, the second fastener 312 can be any type of fastening or coupling means (e.g., snap-fit connector, press-fit connector, etc.). The aircraft collar 314 can be positioned across the speaker housing 308, and the speaker PWB 316 can be coupled to the speaker 306 and the speaker housing 308 using one or more third fasteners 318. In some embodiments, the third fastener 318 can correspond to a speaker PWB screw that, in some cases, can represent a threaded insert and is received by the PSU connector 322.

[0063] The LED PWB 302 can be positioned within the microphone bezel 304, and the LED diffuser 300 can be positioned on the LED PWB 302 and coupled to the microphone bezel 304. The microphone bezel 304 can be coupled to the speaker housing 308 using the first fastener 310. In some embodiments, the first fastener 310 can correspond to a flat head retaining screw. It should be appreciated that the screws (310, 312, 318) and threaded inserts associated with the PSU connector 322 can be replaced with other types of mechanical connectors.

[0064] One or more third screws 318 (or other type of connector) can also be used to couple the noise cancellation device 101 to the overhead service component 200. For example, in some scenarios, one or more third screws 318 can be inserted through one or more openings or holes included within the overhead service component 200 to attach or couple the noise cancellation device 101 to the overhead service component 200.

[0065] The noise cancellation device 101 can be mounted within the overhead service component 200 to output a noise cancellation signal 145 generated by the noise cancellation function 125. For example, the noise cancellation device 101 can be coupled to the overhead service component 200 using aircraft collar 314 and / or one or more third screws 318. In some embodiments, the noise cancellation device 101 can be designed and dimensioned to fit inside the lighting socket of a conventional overhead service component 200. In such a scenario, an existing lighting component (e.g., one originally incorporated into the PSU when manufactured or deployed) included within the conventional overhead service component can be removed and replaced with the noise cancellation device 101. The connectors (e.g., one or more third screws 318) used to couple the noise cancellation device 101 to the PSU can be the same connectors utilized to connect the lighting component, and the noise cancellation device 101 can be connectable to the same power source utilized by the conventional lighting component.

[0066] The manner in which the noise cancellation signal 145 is generated and / or output by the noise cancellation device 101 can vary. In some cases, a microphone included within the noise cancellation device 101 monitors ambient noise within the aircraft cabin and / or in the vicinity of the passenger seat, and the noise cancellation function 125 generates a corresponding noise cancellation signal 145 to cancel out the ambient noise. The noise cancellation function 125 can be executed by the noise cancellation device 101 itself (e.g., by a processing device 110 integrated within the noise cancellation device 101), or the noise cancellation function 125 can be executed by a processing device that communicates with the noise cancellation device 101 (e.g., a centralized processing device that communicates with a plurality of noise cancellation devices 101, etc.). For example, a plurality of noise cancellation devices 101 included within the aircraft enclosure 150A can be networked with or connected to a centralized processing device that executes the noise cancellation function 125. Regardless of whether the noise cancellation signal 145 is generated locally by the noise cancellation device 101 or remotely by a centralized processing device, the noise cancellation signal 145 can be output by a speaker included on each of the noise cancellation devices 101.

[0067] In certain embodiments, the noise cancellation device 101 can communicate directly or indirectly with other components of the noise cancellation system 100 described above (e.g., the sensor 170, the propeller-mounted sensor 170A, the propeller synchronization system 180, etc.). As described above, the noise cancellation device 101 (or the processing device 110 that communicates with the noise cancellation device 101) can utilize adjustment parameters 126 obtained or derived from the sensor 170 and / or the propeller synchronization system 180 to enhance the performance of the noise cancellation function 125. For example, in some cases, the adjustment parameters 126 can assist in canceling out noise generated from specific noise sources 160 associated with the aircraft (e.g., a turboprop engine 160A, a propeller 161, etc.), and the noise cancellation signal 145 can be output via a speaker 306 included within the noise cancellation device 101.

[0068] The noise cancellation device 101 can be calibrated or pre-programmed to identify and cancel specific frequency bands that are prevalent with respect to a particular type of noise source 160 and / or prevalent with respect to a particular type of aircraft, in the same manner described throughout this disclosure. For example, in one embodiment, a component of the noise cancellation device 101 (e.g., the LED diffuser 300) can be rotatable to adjust the light settings, and this component can also be utilized to activate a calibration mode for the noise cancellation device 101 (e.g., by rotating the component for an additional period of time). As explained above, when the calibration mode is activated, the noise cancellation function 125 can monitor and identify the prevalent frequency bands for the particular aircraft type in which the noise cancellation device 101 is disposed, and the noise cancellation device 101 can be programmed to detect the identified frequency bands when the noise cancellation device 101 is operating in its normal operating mode.

[0069] Turning to FIGS. 7A and 7B, the noise cancellation device 101 is shown as being disposed within the lighting socket 326 in order to replace the lighting device of the overhead service component 200. FIG. 7A illustrates an isolation view of a section 328 of the noise cancellation device 101 as disposed within the lighting socket 326. In the illustrated embodiment, the microphone bezel 304 includes an opening 320 that houses the microphone 323 and the sound insulation material 324. The sound insulation material 324 is positioned within the opening to reduce incoming noise (e.g., from the aircraft fuselage) so as not to reach the microphone 323. The opening 320 allows noise and / or directional waveform input within the aircraft passenger cabin to reach the microphone 323. Consistent with the above discussion related to FIGS. 1-3, the directional waveform input is received by the microphone 323, and a directional waveform output (e.g., the noise cancellation signal 145) is output by the speaker 306 of the noise cancellation device 101 to cancel noise within the passenger cabin (e.g., in the vicinity of the passenger seat installed below the noise cancellation device 101). In this embodiment, the microphone 323 is oriented at an angle that is 90 degrees (e.g., 90 degrees from the direction of the directional waveform output) from the output of the speaker 306. This arrangement serves to eliminate or at least reduce the occurrence of audio feedback.

[0070] As mentioned above, in addition to providing a noise cancellation function, the noise cancellation device 101 can also include one or more lighting components (e.g., LEDs) that provide a lighting function.

[0071] The LED PWB 302 includes, or is connected to, at least one LED (or other type of lighting component) configured to emit light in a downward direction in the direction of the passenger seat. The LED diffuser 300 can perform a function associated with evenly diffusing or distributing the light output by the LEDs incorporated in the noise cancellation device 101. In some embodiments, the LED diffuser 300 can be rotatable to adjust the lighting setting. For example, an individual can rotate the LED diffuser 300 around the microphone bezel 304 to turn the LEDs on, dim them, or turn them off. In other embodiments, the noise cancellation device 101 can be configured to adjust the lighting setting in other ways (e.g., using switches, buttons, etc.).

[0072] In some embodiments, the noise cancellation device 101 can be partially enclosed by the overhead service component 200 when the noise cancellation device 101 is disposed within the overhead service component 200. For example, a first portion can be positioned within the overhead service component 200 and / or extend above the bottom surface 202 of the overhead service component 200, and a second portion can be positioned outside the overhead service component 200 and / or extend below the bottom surface 202.

[0073] As shown in FIG. 7B, the noise cancellation device 101 is partially enclosed by the lighting socket 326. In the illustrated embodiment, the speaker housing 308, the aircraft collar 314, and the speaker PWB 316 are positioned on a first side of the bottom surface 202 of the housing 210 (i.e., inside the lighting socket 326). Also, in the illustrated embodiment, a portion of the LED diffuser 300, the LED PWB 302, the microphone 303, the microphone bezel 304, and the speaker 306 are positioned on a second side of the bottom surface 202 of the housing 210 (i.e., outside the lighting socket 326). This enables an individual to operate the noise cancellation device 101.

[0074] In some embodiments, the first portion can include the speaker housing 308, the aircraft collar 314, the speaker PWB 316, and the upper portion of the audio output device 140 (e.g., the speaker 306). The first portion can also include one or more mechanical connectors for coupling the noise cancellation device 101 to the overhead service component 200, as well as connectors for powering the noise cancellation device 101 and connecting the noise cancellation device 101 to one or more processing devices 110 that generate noise cancellation signals.

[0075] In some embodiments, the second portion of the noise cancellation device 101 can include one or more lighting components (e.g., the LED diffuser 300, the LED PWB 302, and / or other lighting components), one or more audio input devices 130 (e.g., the microphone 303), the microphone bezel 304, and the lower portion of the audio output device 140 (e.g., the speaker 306). The second portion can be exposed above the passenger seat and can enable a passenger to operate the noise cancellation device 101 (e.g., activate / deactivate the noise cancellation device 101, control the settings of the lighting components, etc.). For example, in some embodiments, a passenger can be enabled to rotate the LED diffuser 300 around the microphone bezel 304 to turn the LEDs on, dim them, and turn them off.

[0076] Positioning the second portion of the noise cancellation device 101 outside of the overhead service component 200 allows the audio input device 130 (e.g., microphone 323) within the aperture 320 to receive aircraft cabin noise and / or directional waveform inputs. The directional waveform inputs received by the audio input device 130 can be transmitted to the processing device 110 for analysis, and the processing device 110 can generate a directional waveform output (e.g., noise cancellation signal 145) and transmit it to the audio output device 140 (e.g., speaker 306), which can output these signals and cancel the noise in the passenger cabin (e.g., in the vicinity of the passenger seat installed below the noise cancellation device 101). Positioning a portion of the speaker 306 of the noise cancellation device 101 outside of the overhead service component 200 reduces obstacles so as not to interfere with the directional waveform output.

[0077] The noise cancellation device described above provides various advantages and benefits. In particular, it provides a compact device that can cancel unwanted noise inside the aircraft cabin. Also, in some embodiments, the noise cancellation signal output by the noise cancellation device can use improved noise cancellation techniques (e.g., using the adjustment parameters, sensor outputs, propeller synchronization system outputs, and / or calibration techniques described herein) to more effectively cancel unwanted noise in the aircraft cabin. In addition, the configuration of this device allows it to replace existing lighting components within a conventional PSU and upgrade the conventional PSU to include noise cancellation technology. Further, the configuration of the noise cancellation device when disposed within the PSU (e.g., the location and orientation of the microphone, speaker, and sound insulation material, etc.) shields the device from noise emitted from the fuselage and reduces audio feedback.

[0078] The electronic noise cancellation system 100 described herein can be incorporated into an aircraft in other ways than those explicitly mentioned herein.

[0079] In some embodiments, the electronic noise cancellation system 100 can be coupled to an output interface that enables a user to view data related to the noise cancellation function and / or control aspects of the electronic noise cancellation system 100. In some cases, the output interface may be included within an aircraft cockpit or within a cabin crew section. In other scenarios, the output interface may be included on or near an automotive dashboard. In further scenarios, the output interface may be included within a control room of a residential or commercial building.

[0080] The output interface can include one or more light emitting diode (LED) displays, one or more liquid crystal displays (LCDs), one or more cathode ray tube (CRT) displays, and / or other types of displays. The output interface can also include selectable options (e.g., buttons, dials, capacitive touchscreens, switches, etc.) that enable a pilot, automotive operator, and / or other individual to make selections.

[0081] The output interface can enable an individual to perform various functions, including activating and deactivating the electronic noise cancellation system 100, viewing adjustment parameters and / or other metrics associated with performing the noise cancellation function, adjusting or customizing the adjustment parameters and / or other metrics, and / or viewing parameters related to ambient noise within the enclosure.

[0082] As mentioned above, the techniques and solutions described in this disclosure can be applied to any type of aircraft (e.g., commercial airplanes, military airplanes, helicopters, airships, etc.). The techniques can also be applied to other types of vehicles (e.g., ground-based vehicles, water-based vehicles, etc.) and / or other types of enclosures (e.g., rooms or buildings). Appropriate adaptations or modifications can be incorporated to tailor these techniques and solutions to a particular type of aircraft, vehicle, and / or enclosure.

[0083] In one embodiment, an electronic noise cancellation device for an aircraft is provided. The electronic noise cancellation device includes a housing that integrates one or more audio input devices configured to receive an input audio signal, one or more audio output devices configured to output a noise cancellation signal, one or more lighting components, and at least one connector that enables the electronic noise cancellation device to be coupled to an overhead service component of the aircraft. The electronic noise cancellation device is adapted to be received within a lighting socket of the overhead service component included within the aircraft enclosure.

[0084] In some embodiments, the electronic noise cancellation device replaces a lighting component of the overhead service component and is adapted to upgrade the overhead service component using noise cancellation functionality. The electronic noise cancellation device is sized to fit inside the lighting socket based on the dimensions of the lighting component. The electronic noise cancellation device uses the same or a similar connection mechanism as the lighting component for attachment to the overhead service component. The noise cancellation device is configured to be connected to the power source utilized to power the lighting component.

[0085] In some embodiments, when disposed within an overhead service component, the electronic noise cancellation device comprises a first obfuscated portion that extends above the bottom surface of the overhead service component and a second exposed portion that extends below the bottom surface of the overhead service component. The second exposed portion includes an opening that includes a microphone, the opening being positioned to receive ambient noise within the aircraft cabin. The second exposed portion further includes a speaker configured to output a noise cancellation signal, and the microphone and the speaker are positioned at approximately 90 degrees relative to each other.

[0086] In some embodiments, the first obfuscated portion of the electronic noise cancellation device is coupled to a power source and includes at least one mechanical connector for coupling the electronic noise cancellation device to a lighting socket. The second exposed portion includes a rotatable component adapted to adjust one or more settings of one or more lighting components.

[0087] In some embodiments, the first obfuscated portion of the electronic noise cancellation device includes or communicates with a processing device that generates a noise cancellation signal.

[0088] In some embodiments, one or more sensors are configured to monitor a noise source, and a noise cancellation function utilizes at least one adjustment parameter derived from the output of the one or more sensors to generate a noise cancellation signal adapted to cancel noise generated by a noise source within the aircraft enclosure. One or more audio output devices output the noise cancellation signal generated by the noise cancellation function.

[0089] In some embodiments, the noise source is an aircraft mechanical component including at least one of a turboprop engine or a propeller, and the one or more sensors are positioned on or adjacent to the noise source.

[0090] In some embodiments, the electronic noise cancellation device is pre-calibrated to detect and cancel the prevalent frequency bands inside the aircraft where the noise cancellation device is disposed. During the calibration phase, the frequency bands related to the aircraft are monitored, the prevalent frequency bands are identified, and the noise cancellation function that generates the noise cancellation signal is pre-programmed to detect the prevalent frequency bands.

[0091] In some embodiments, the electronic noise cancellation device communicates with a processing device. The processing device is configured to determine the frequency of the ambient noise inside the passenger cabin of the aircraft and generate a noise cancellation signal. One or more audio output devices are configured to output the noise cancellation signal, and the noise cancellation signal is phase-inverted by 180 degrees with respect to the ambient noise.

[0092] In some embodiments, a plurality of electronic noise cancellation devices are disposed inside the aircraft. A unified processor is configured to communicate with each of the plurality of electronic noise cancellation devices. The unified processor executes the noise cancellation function and generates a noise cancellation signal, at least in part, based on the inputs received from the plurality of electronic noise cancellation devices. The noise cancellation signal is output by each of the plurality of electronic noise cancellation devices.

[0093] In one embodiment, an electronic noise cancellation system for an aircraft is provided. The electronic noise cancellation system includes an overhead service component contained within an aircraft enclosure, and at least one noise cancellation device configured to be disposed within a lighting socket of the overhead service component. The at least one noise cancellation device includes one or more audio input devices configured to receive an input audio signal, one or more audio output devices configured to output a noise cancellation signal, one or more lighting components, and at least one connector that enables the electronic noise cancellation device to be coupled to the overhead service component of the aircraft. The electronic noise cancellation system further includes at least one processor coupled to the one or more audio input devices and the one or more audio output devices, the at least one processor being configured to execute a noise cancellation function to generate the noise cancellation signal.

[0094] In some embodiments, the noise cancellation device replaces a lighting component of the overhead service component and is adapted to upgrade the overhead service component using noise cancellation functionality. The noise cancellation device is sized to fit inside the lighting socket based on the dimensions of the lighting component. The noise cancellation device uses the same or a similar connection mechanism as the lighting component for attachment to the overhead service component. The noise cancellation device is configured to be connected to the power source utilized to power the lighting component.

[0095] In some embodiments, when disposed within an overhead service component, the noise cancellation device includes a first obscuring portion that extends above the bottom surface of the overhead service component and a second exposed portion that extends below the bottom surface of the overhead service component. The second exposed portion includes an opening that includes a microphone, the opening being positioned to receive ambient noise within the passenger cabin of the aircraft. The second exposed portion further includes a speaker configured to output a noise cancellation signal, and the microphone and the speaker are positioned at approximately 90 degrees relative to each other.

[0096] In some embodiments, the first obscuring portion of the noise cancellation device is coupled to a power source and includes at least one mechanical connector for coupling the noise cancellation device to a lighting socket. The second exposed portion includes a rotatable component adapted to adjust one or more settings of one or more lighting components.

[0097] In some embodiments, the first obscuring portion of the noise cancellation device includes or communicates with a processor that generates a noise cancellation signal.

[0098] In some embodiments, one or more sensors are configured to monitor a noise source, and a noise cancellation function utilizes at least one adjustment parameter derived from the output of the one or more sensors to generate a noise cancellation signal adapted to cancel noise generated by a noise source within an aircraft enclosure. One or more audio output devices output the noise cancellation signal generated by the noise cancellation function. The noise source is a mechanical component of the aircraft that includes at least one of a turboprop engine or a propeller, and the one or more sensors are positioned on or adjacent to the noise source.

[0099] In some embodiments, the noise cancellation device is pre-calibrated to detect and cancel the prevalent frequency bands inside the aircraft where the noise cancellation device is disposed. During the calibration phase, the frequency bands related to the aircraft are monitored, the prevalent frequency bands are identified, and the noise cancellation function that generates the noise cancellation signal is pre-programmed to detect the prevalent frequency bands.

[0100] In some embodiments, the noise cancellation device communicates with a processor, the processor is configured to determine the frequency of the ambient noise inside the passenger cabin of the aircraft and generate a noise cancellation signal, and one or more audio output devices are configured to output the noise cancellation signal, and the noise cancellation signal is phase-inverted by 180 degrees with respect to the ambient noise.

[0101] In some embodiments, a plurality of noise cancellation devices are disposed inside the aircraft, a unified processor is configured to communicate with each of the plurality of noise cancellation devices, the unified processor executes the noise cancellation function and generates a noise cancellation signal based at least in part on the inputs received from the plurality of noise cancellation devices, and the noise cancellation signal is output by each of the plurality of noise cancellation devices.

[0102] In some embodiments, a method is provided. The method is to provide an electronic noise cancellation device for an aircraft, the electronic noise cancellation device comprising: (a) one or more audio input devices configured to receive an input audio signal; (b) one or more audio output devices configured to output a noise cancellation signal; (c) one or more lighting components; and (d) at least one connector enabling the electronic noise cancellation device to be coupled to an overhead service component of the aircraft, the electronic noise cancellation device being housed in a housing integrating the foregoing, the electronic noise cancellation device being adapted to be received within a lighting socket of an overhead service component included within an aircraft enclosure, and the method including disposing the electronic noise cancellation device within the lighting socket of the overhead service component and activating the electronic noise cancellation device to cancel within the aircraft enclosure.

[0103] In some embodiments, an electronic noise cancellation device for an aircraft is provided. The electronic noise cancellation device comprises a housing integrating one or more audio input devices configured to receive an input audio signal, one or more audio output devices configured to output a noise cancellation signal, and one or more lighting components, and the electronic noise cancellation device is adapted to be received within a lighting socket of an overhead service component included within an aircraft enclosure.

[0104] In some embodiments, an electronic noise cancellation device for an aircraft is provided. The electronic noise cancellation device comprises a housing integrating one or more audio input devices configured to receive an input audio signal, one or more audio output devices configured to output a noise cancellation signal, and one or more lighting components, and the one or more audio input devices are arranged at an angle of at least 90 degrees with respect to the one or more audio output devices.

[0105] In some embodiments, the noise cancellation signal is generated by either 1) the electronic noise cancellation device itself or 2) a unified processing device that communicates with the electronic noise cancellation device and one or more additional electronic noise cancellation devices.

[0106] In some embodiments, noise cancellation is generated in response to at least one of the adjustment parameters generated by 1) ambient noise detected within the input audio signal and 2) one or more sensors configured to monitor the noise source.

[0107] In some embodiments, an electronic noise cancellation system for an aircraft is provided. The electronic noise cancellation system includes an enclosure, one or more audio input devices included within the enclosure and configured to receive an input audio signal, one or more audio output devices included within the enclosure, the one or more audio output devices being configured to output a noise cancellation signal, and at least one processor coupled to the one or more audio input devices and the one or more audio output devices, the at least one processor being configured to perform a noise cancellation function. The noise cancellation function receives one or more adjustment parameters associated with a noise source, the noise source generating ambient noise, the one or more adjustment parameters indicating at least one of a frequency or a phase associated with the noise source, the noise cancellation function utilizing the one or more adjustment parameters to generate a noise cancellation signal, the noise cancellation signal being configured to at least partially cancel the ambient noise generated by the noise source, and the one or more audio output devices outputting the noise cancellation signal inside the enclosure.

[0108] In some embodiments, an electronic noise cancellation system for an aircraft is provided. The electronic noise cancellation system includes one or more audio input devices included inside the aircraft enclosure, the one or more audio input devices being configured to receive an input audio signal, one or more audio output devices included within the aircraft enclosure, the one or more audio output devices being configured to output a noise cancellation signal, and at least one processor coupled to the one or more audio input devices and the one or more audio output devices, the at least one processor being configured to execute a noise cancellation function. The noise cancellation function receives one or more adjustment parameters associated with a noise source, the noise source including one of a propeller or an engine, the noise source generating ambient noise, the one or more adjustment parameters indicating at least one of a frequency or a phase of the propeller or the engine, and the noise cancellation function utilizes the one or more adjustment parameters to generate a noise cancellation signal in a manner that at least partially cancels the ambient noise inside the aircraft enclosure, and the one or more audio output devices output the noise cancellation signal inside the enclosure.

[0109] In some embodiments, an electronic noise cancellation system for a vehicle is provided. The electronic noise cancellation system includes one or more audio input devices included inside the vehicle enclosure, where the one or more audio input devices are configured to receive an input audio signal, one or more audio output devices included inside the vehicle enclosure, where the one or more audio output devices are configured to output a noise cancellation signal, and at least one processor coupled to the one or more audio input devices and the one or more audio output devices, where the at least one processor is configured to execute a noise cancellation function. The noise cancellation function receives one or more adjustment parameters associated with a noise source that generates ambient noise, where the one or more adjustment parameters indicate at least one of a frequency of the noise source or a phase of the noise source. The noise cancellation function utilizes the one or more adjustment parameters to generate a noise cancellation signal in a manner that at least partially cancels the ambient noise inside the vehicle enclosure, and the one or more audio output devices output the noise cancellation signal generated by the noise cancellation function.

[0110] In some embodiments, an electronic noise cancellation system is provided. The electronic noise cancellation system includes an enclosure, one or more audio input devices included within the enclosure and configured to receive an input audio signal, one or more audio output devices included within the enclosure and configured to output a noise cancellation signal, and at least one processor coupled to the one or more audio input devices and the one or more audio output devices and configured to perform a noise cancellation function. The noise cancellation function receives one or more adjustment parameters associated with a noise source that generates ambient noise, where the one or more adjustment parameters indicate at least one of a frequency or a phase associated with the noise source. The noise cancellation function utilizes the one or more adjustment parameters to generate a noise cancellation signal configured to at least partially cancel the ambient noise generated by the noise source, and the one or more audio output devices output the noise cancellation signal inside the enclosure.

[0111] Embodiments may include a computer program product accessible from a computer-usable or computer-readable medium providing program code for use by or in connection with a computer or any instruction execution system. The computer program product may store instructions for implementing the functionality of the electronic noise cancellation system 100 and / or other components described herein. The computer-usable or computer-readable medium may include any device that stores, communicates, propagates, or transports a program for use by or in connection with an instruction execution system, apparatus, or device. The medium can be a magnetic, optical, electronic, electromagnetic, infrared, or semiconductor system (or apparatus or device) or propagation medium. The medium may include computer-readable storage media such as semiconductor or solid state memory, magnetic tape, removable computer diskette, random access memory (RAM), read-only memory (ROM), rigid magnetic disk, and optical disk.

[0112] A data processing system suitable for storing and / or executing program code may include at least one processor directly or indirectly coupled to memory elements through a system bus. The memory elements may include local memory employed during actual execution of the program code, bulk storage, and cache memory that provides temporary storage of at least some program code in order to reduce the number of times the code is read from bulk storage during execution. Input / output or I / O devices (including but not limited to keyboards, displays, pointing devices, etc.) may be coupled to the system either directly or through intervening I / O controllers.

[0113] A network adapter may also be coupled to the system to enable the data processing system to become coupled to other data processing systems or storage devices through intervening private or public networks. Satellite transceivers, wireless transceivers, modems, and Ethernet (registered trademark) cards are just some of the types of network adapters currently available.

[0114] Although various novel features of the present invention have been shown, described, and pointed out as applied to its particular embodiments, it should be understood that various omissions, substitutions, and changes in the form and details of the systems and methods illustrated and exemplified herein may be made by those skilled in the art without departing from the spirit of the present invention. In particular, the steps in the methods may, in many cases where such is appropriate, be performed in a different order. Those skilled in the art will recognize, based on the above disclosure and understanding of the teachings of the present invention, that the specific hardware and devices that are part of the systems described herein, and the general functionality provided thereby and incorporated therein, may vary in different embodiments of the present invention. Thus, the description of the system components is for illustrative purposes to facilitate a full and complete understanding and appreciation of the various aspects and functionality of the particular embodiments of the present invention as realized in those system and method embodiments. Those skilled in the art will recognize that the present invention may be practiced beyond the embodiments described and illustrated herein for purposes of illustration and not limitation. Variations, modifications, and other implementations of the subject matter described herein may be conceived by those skilled in the art without departing from the spirit and scope of the present invention and its claims.

Claims

**Claim 1** An electronic noise cancellation device for an aircraft, comprising a housing, wherein the housing integrates one or more audio input devices configured to receive an input audio signal, one or more audio output devices configured to output a noise cancellation signal, one or more lighting components, and at least one connector enabling the electronic noise cancellation device to be coupled to an overhead service component of the aircraft, and the electronic noise cancellation device is adapted to be received within a lighting socket of the overhead service component included within an aircraft enclosure. **Claim 2** The electronic noise cancellation device is adapted to replace a lighting component of the overhead service component and upgrade the overhead service component using noise cancellation functionality, the electronic noise cancellation device is dimensioned to fit inside the lighting socket based on the dimensions of the lighting component, the electronic noise cancellation device uses the same or a similar connection mechanism as the lighting component for attachment to the overhead service component, the noise cancellation device is configured to be connected to a power source utilized to power the lighting component. The electronic noise cancellation device according to claim 1. **Claim 3** When disposed within the overhead service component, the electronic noise cancellation device includes a first obfuscated portion extending above a bottom surface of the overhead service component and a second exposed portion extending below the bottom surface of the overhead service component, the second exposed portion includes an opening including a microphone, the opening being positioned to receive ambient noise within a passenger cabin of the aircraft, the second exposed portion further includes a speaker configured to output the noise cancellation signal, the microphone and the speaker are positioned at approximately 90 degrees relative to each other. The electronic noise cancellation device according to claim 1. **Claim 4** The first obfuscated portion of the electronic noise cancellation device is coupled to a power source, The first obfuscated portion of the electronic noise cancellation device includes at least one mechanical connector for coupling the electronic noise cancellation device to the lighting socket. The second exposed portion includes a rotatable component, and the rotatable component is adapted to adjust one or more settings of the one or more lighting components. The electronic noise cancellation device according to claim 3. **Claim 5** The first obfuscated portion of the electronic noise cancellation device includes or communicates with a processing device that generates the noise cancellation signal. The electronic noise cancellation device according to claim 4. **Claim 6** One or more sensors are configured to monitor a noise source. The noise cancellation function utilizes at least one adjustment parameter derived from the output of the one or more sensors to generate the noise cancellation signal. The noise cancellation signal is adapted to cancel the noise generated by the noise source within the aircraft enclosure. The one or more audio output devices output the noise cancellation signal generated by the noise cancellation function. The electronic noise cancellation device according to claim 1. **Claim 7** The noise source is a mechanical component of the aircraft that includes at least one of a turboprop engine or a propeller. The one or more sensors are positioned on or adjacent to the noise source. The electronic noise cancellation device according to claim 6. **Claim 8** The electronic noise cancellation device is pre-calibrated to detect and cancel prevalent frequency bands inside the aircraft where the noise cancellation device is disposed. During the calibration phase, the frequency bands related to the aircraft are monitored and the prevalent frequency bands are identified. The noise cancellation function that generates the noise cancellation signal is pre-programmed to detect the prevalent frequency bands. The electronic noise cancellation device according to claim 1. **Claim 9** The electronic noise cancellation device communicates with a processing device that is configured to determine the frequency of ambient noise inside the passenger cabin of the aircraft and generate the noise cancellation signal. The one or more audio output devices are configured to output the noise cancellation signal, and the noise cancellation signal is phase-inverted by 180 degrees with respect to the ambient noise. The electronic noise cancellation device according to claim 1. **Claim 10** A plurality of electronic noise cancellation devices are disposed within the aircraft, The unified processor is configured to communicate with each of the plurality of electronic noise cancellation devices, The unified processor executes a noise cancellation function and generates the noise cancellation signal, at least in part, based on inputs received from the plurality of electronic noise cancellation devices, The noise cancellation signal is output by each of the plurality of electronic noise cancellation devices, the electronic noise cancellation device according to claim 1.

11. An electronic noise cancellation system for an aircraft, An overhead service component included within an aircraft enclosure, and At least one noise cancellation device configured to be disposed within an illumination socket of the overhead service component, the at least one noise cancellation device comprising: One or more audio input devices configured to receive an input audio signal, One or more audio output devices configured to output a noise cancellation signal, One or more lighting components, and At least one connector that enables the noise cancellation device to be coupled to an overhead service component of the aircraft Comprising at least one noise cancellation device, and At least one processor coupled to the one or more audio input devices and the one or more audio output devices, the at least one processor being configured to execute a noise cancellation function that generates the noise cancellation signal, at least one processor An electronic noise cancellation system comprising.

12. The noise cancellation device replaces an illumination component of the overhead service component and is adapted to upgrade the overhead service component using noise cancellation functionality, The noise cancellation device is dimensioned to fit inside the illumination socket based on the dimensions of the illumination component, The noise cancellation device uses the same or a similar connection mechanism as the illumination component for attachment to the overhead service component, The noise cancellation device is configured to be connected to a power source utilized to power the illumination component, the electronic noise cancellation system according to claim 11.

13. When disposed within the overhead service component, the noise cancellation device includes a first obscuring portion that extends above the bottom surface of the overhead service component and a second exposed portion that extends below the bottom surface of the overhead service component. The second exposed portion includes an opening that includes a microphone, and the opening is positioned to receive ambient noise within the passenger cabin of the aircraft. The second exposed portion further includes a speaker configured to output the noise cancellation signal. The electronic noise cancellation system according to claim 11, wherein the microphone and the speaker are positioned at approximately 90 degrees relative to each other.

14. The first obscuring portion of the noise cancellation device is coupled to a power source. The first obscuring portion of the noise cancellation device includes at least one mechanical connector for coupling the noise cancellation device to the lighting socket. The electronic noise cancellation system according to claim 13, wherein the second exposed portion includes a rotatable component, and the rotatable component is adapted to adjust one or more settings of the one or more lighting components.

15. The electronic noise cancellation system according to claim 14, wherein the first obscuring portion of the noise cancellation device includes or communicates with the processor that generates the noise cancellation signal.

16. One or more sensors are configured to monitor a noise source. The noise cancellation function utilizes at least one adjustment parameter derived from the output of the one or more sensors to generate the noise cancellation signal. The noise cancellation signal is adapted to cancel noise generated by the noise source within the aircraft enclosure. The one or more audio output devices output the noise cancellation signal generated by the noise cancellation function. The noise source is a mechanical component of the aircraft that includes at least one of a turboprop engine or a propeller. The electronic noise cancellation system according to claim 11, wherein the one or more sensors are positioned on or adjacent to the noise source.

17. The noise cancellation device is pre-calibrated to detect and cancel prevalent frequency bands inside the aircraft in which the noise cancellation device is disposed. During the calibration phase, the frequency band related to the aircraft is monitored, and the popular frequency band is identified. The electronic noise cancellation system according to claim 11, wherein the noise cancellation function for generating the noise cancellation signal is pre-programmed to detect the popular frequency band.

18. The noise cancellation device communicates with the processor, and the processor is configured to determine the frequency of the ambient noise inside the passenger cabin of the aircraft and generate the noise cancellation signal. The electronic noise cancellation system according to claim 11, wherein the one or more audio output devices are configured to output the noise cancellation signal, and the noise cancellation signal is phase-inverted by 180 degrees with respect to the ambient noise.

19. A plurality of noise cancellation devices are arranged inside the aircraft. The unified processor is configured to communicate with each of the plurality of noise cancellation devices. The unified processor executes a noise cancellation function and generates the noise cancellation signal at least partially based on inputs received from the plurality of noise cancellation devices. The electronic noise cancellation system according to claim 11, wherein the noise cancellation signal is output by each of the plurality of noise cancellation devices.

20. A method comprising: providing an electronic noise cancellation device for an aircraft, the electronic noise cancellation device comprising a housing that integrates (a) one or more audio input devices configured to receive an input audio signal, (b) one or more audio output devices configured to output a noise cancellation signal, (c) one or more lighting components, and (d) at least one connector that enables the electronic noise cancellation device to be coupled to an overhead service component of the aircraft, the electronic noise cancellation device being adapted to be received within a lighting socket of the overhead service component included within the aircraft enclosure; arranging the electronic noise cancellation device within the lighting socket of the overhead service component; activating the electronic noise cancellation device to cancel within the aircraft enclosure. A method.

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