Abstract: An electronic device includes two speakers, a single functional chip, a parameter extraction circuit, an audio processing module, a gain adjusting circuit and a current detecting unit. The current detecting unit is disposed in the functional chip for detecting the driving current of the two speakers. The functional chip provides the driving voltage of the two speakers based on an output signal and converts the analogue current/voltages of the two speakers into digital current/voltages. The parameter extraction circuit acquires the parameter of each speaker based on the digital current/voltages. The audio processing module acquires the gains of various physical quantities based on the parameter of each speaker and determines the final gain of each physical quantity. The gain adjusting circuit provides the output signal by adjusting the gain of an input signal based on the final gain of each physical quantity.

Abstract: Example embodiments may include one or more of receiving sound emissions signals from channels via sound emitters, controlling the sound emission signals, via relay circuits, and one of the relay circuits is configured to interrupt one of the sound emission signals associated with one of the sound emitters while the other sound emissions signals pass to the other corresponding sound emitters, and receiving, via a sound detection circuit, an electrical ambient sound signal based on ambient sound sensed by the one of the sound emitters responsive to the interrupted one of the sound emission signals.

Abstract: A hearing aid adjustment system is provided that can efficiently improve hearing while alleviating excessive stress to be felt by a user after adjustment of a set value of a hearing aid at each phase is performed. An adjustment system S includes a target set value decision unit 3b which decides the target set value, a first set content decision unit 3c which decides the set value at each phase based on the target set value, a wearing time measurement unit 3e which measures a wearing time of a hearing aid 2 of a user after previous adjustment, and an adjustment processing unit 3d which performs adjustment of the hearing aid 2 based on the set value at each of the phases. In adjustment at each of the phases, the adjustment processing unit 3d corrects the present set value based on the measured wearing time.

Abstract: An active noise reduction system includes a reference signal generator configured to generate a reference signal, a canceling sound generator configured to generate a canceling sound, an error detector configured to detect an error between a noise and the canceling sound and generate an error signal corresponding to the error, and a controller configured to control the canceling sound generator based on the reference signal and the error signal, wherein the controller is configured to update an estimation value of acoustic characteristics in an internal space of a mobile body based on the reference signal and the error signal, estimate a head position of an occupant in the internal space based on the updated estimation value of the acoustic characteristics, and update a control filter based on the estimated head position of the occupant, the control filter being a filter for controlling the canceling sound generator.

Abstract: This disclosure describes an apparatus and method of an embodiment of an invention that is a ceiling tile microphone that includes: a plurality of microphones coupled together as a microphone array used for beamforming where the plurality of microphones are positioned at predetermined locations and produce audio signals to be used to form a directional pickup pattern; a single ceiling tile with an outer surface on the front side of the ceiling tile where the outer surface is acoustically transparent, the microphone array couples to the back side of the single ceiling tile and combines with the single ceiling tile as a single unit; a housing that encloses signal processing circuitry and couples to the back side of the single unit; where the single unit is mountable on the ceiling using mounting accessories; where all or part of the housing is in the ceiling space above the plane of the ceiling; where the single unit further includes beamforming.

Abstract: A backplate assembly for a condenser microphone. The backplate may be coated with a parylene configured to help reduce the flatness deviation of the backplate across the diameter of the backplate. A plurality of openings may extend from the top portion of the backplate to the bottom portion of the backplate.

Abstract: An electronic device includes one or more pose sensors for detecting a pose of a user of the electronic device relative to a first physical environment and is in communication with one or more audio output devices. While a first pose of the user meets first presentation criteria, the electronic device provides audio content at a first simulated spatial location relative to the user. The electronic device detects a change in the pose of the user from the first pose to a second pose. In response to detecting the change in the pose of the user, and in accordance with a determination that the second pose of the user does not meet the first presentation criteria, the electronic device provides audio content at a second simulated spatial location relative to the user that is different from the first simulated spatial location.

Abstract: A loudspeaker system (200) includes an overhead sound image generating (e.g., ATMOS™) elevation sound projecting loudspeaker transducer or array (210) for reproducing an elevation signal and a second cancellation loudspeaker or transducer array (250) for generating and projecting a direct signal cancellation. The cancellation speaker or array (250) is driven with a filtered, polarity reversed version of the elevation signal to cancel undesired direct sound (160) from elevation speaker (210) which would otherwise diminish the quality of elevation signal reproduction for a listener L.

Abstract: In some examples, a sensor node is mounted to a post and includes a microphone that is coupled to the post. The sensor node records, at a first time, first audio data, using the microphone, filters the first audio data to create first filtered audio, records, at a second time that occurs after the first time, second audio data using the microphone, filters the second audio data to create second filtered audio, and determines a difference in decibels between a first volume of the first filtered audio and a second volume of the second filtered audio. If the sensor node determines that the difference in decibels is greater than a predetermined threshold, then the sensor node sends a notification of activity that includes the difference in decibels.

Abstract: Illustrative embodiments enable a MEMS transducer to quickly recover from, acoustic overload events by quickly resetting signal processing circuitry downstream from a MEMS transducer. An acoustic overload sensor detects occurrence of an acoustic overload event, and triggers a reset circuit to operate a set of switches to rapidly drain charge from a corresponding set of capacitances within the transducer, or within the signal processing circuitry, thereby resetting the signal processing circuitry more rapidly than would occur if said transducer or circuitry were allowed to recover on its own.

Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.

Abstract: A hearing protection system includes an earplug and an electronic hearing device inserted into a cavity in the earplug. The electronic hearing device includes electronics that incorporate digital signal processing to provide sound amplification and fast compression programming to shut off sound amplification to protect the user when a loud noise is detected. The housing of the electronic hearing device has a sound aperture for emitting the sound from a speaker assembly. The sound aperture is aligned with an opening of a sound tube in the earplug so that sound generated by the speaker assembly can propagate through the sound tube to the user's ear canal. The electronic hearing device may include a short-range communication interface for receiving a short-range communication signal that carries information. The system may include a noise dosimeter that generates noise exposure measurement data related to a dose of noise exposure over a period of time.

Abstract: There is disclosed an audio recorder that automatically determines, when preset microphones are configured to be detachable and different microphones are attached to the same jacks, whether or not the different microphones are in-house microphones, and automatically determines which of the X-Y technique or the A-B technique is used as the attachment technique. Holders in the audio recorder include a switch structure in which, in cases where the different microphones are attached in place of the preset microphones, a contact is turned on only when the different microphones are in-house microphones. Further, a main body unit includes a processor that, when the contact in the switch structure is turned on, automatically determines which of the X-Y technique or the A-B technique is used based on a voltage value of a certain terminal in a plug of the different microphones.

Abstract: Content rules engines for playback devices are disclosed herein. A media playback system receives a first command to form a synchrony group comprising a plurality of playback devices. The system receives a second command for the synchrony group to play back first audio content. In response to the second command, the first audio content is played back via the synchrony group. The system receives (i) second audio content to be played back by one or more of the playback devices of the synchrony group and (ii) content source properties associated with an audio source of the second audio content. The system accesses a rules engine to determine playback restrictions based at least in part on the content source properties. Based at least in part on the playback restrictions, operation of one or more of the playback devices is restricted.

Abstract: A device is configured to assist an individual during extravehicular activity. The device obtains and operates on first data indicative of a detection space around the individual, and second data indicative of a pose of the head of the individual relative to a helmet, which is worn over the head of the individual with spacing to the head. The device is configured to process the first data to detect an object in the detection space and determine a first position of the object with respect to the helmet; determine, based on the first position and the second data, a second position of the object with respect to the head, and cause an array of speakers in the helmet to generate an audible sound inside the helmet with a spatial origin given by the second position.

Abstract: Systems and methods for loudspeaker layout mapping in accordance with embodiments of the invention are illustrated. In many embodiments, loudspeakers are able to generate tones which are used by other loudspeakers to generate impulse responses. The impulse responses and the angles at which the tones were received can be used to determine the relative locations and orientations of the loudspeakers. In various embodiments, obstacles which obstruct the path of the tone can be identified and accounted for.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for audio equalization. Example instructions disclosed herein cause one or more processors to at least: detect an irregularity in a frequency representation of an audio signal in response to a change in volume between a set of frequency values exceeding a threshold; and adjust a volume at a first frequency value of the set of frequency values to reduce the irregularity.

Abstract: A method is disclosed, the method comprising obtaining at least one first information indicative of audio data gathered by at least one first microphone, and at least one second information indicative of audio data gathered by at least one second microphone; determining a differential information indicative of one or more differences between at least two pieces of information, wherein the differential information is determined based, at least in part, on the at least one first information and the at least one second information; and compensating of an impact onto the audio data, wherein audio data of the first information and/or the second information is compensated based, at least in part, on the determined differential information. Further, an apparatus, and a system are disclosed.

Abstract: A system and a corresponding method for assisting selective hearing are provided. The system includes a detector for detecting an audio source signal portion of one or more audio sources by using at least two received microphone signals of a hearing environment. In addition, the system includes a position determiner for allocating position information to each of the one or more audio sources. In addition, the system includes an audio type classifier for assigning an audio source signal type to the audio source signal portion of each of the one or more audio sources. In addition, the system includes a signal portion modifier for varying the audio source signal portion of at least one audio source of the one or more audio sources depending on the audio signal type of the audio source signal portion of the at least one audio source so as to obtain a modified audio signal portion of the at least one audio source. In addition, the system includes a signal generator.

Abstract: A hearing protection system includes an earplug and an electronic hearing device inserted into a cavity in the earplug. The electronic hearing device includes electronics that incorporate digital signal processing to provide sound amplification and fast compression programming to shut off sound amplification to protect the user when a loud noise is detected. The housing of the electronic hearing device has a sound aperture for emitting the sound from a speaker assembly. The sound aperture is aligned with an opening of a sound tube in the earplug so that sound generated by the speaker assembly can propagate through the sound tube to the user's ear canal. The electronic hearing device may include a short-range communication interface for receiving a short-range communication signal that carries information. The system may include a noise dosimeter that generates noise exposure measurement data related to a dose of noise exposure over a period of time.