Abstract: A convertible head wearable audio device is provided that may include a headband having a first earpiece at a first end and a receptacle at a second end. The convertible head wearable audio device may also include a wireless interface. The wireless interface may be configured to communicatively couple the convertible head wearable audio device to a remote device. The convertible head wearable audio device may further include an active noise cancellation module. The active noise cancellation module may be configured to reduce ambient noise from an audio output of the convertible head wearable audio device.

Abstract: A method for controlling a loudspeaker having an electromechanical force transducer and a diaphragm by: Providing a non-linear electromechanical model configured to apply one or more desired conditions to a loudspeaker input digital audio signal, i.e. to an analogic input signal converted in a digital input signal; Providing an inverse non-linear electromechanical model of the transducer configured to receive a signal processed by the non-linear model and to linearize at least one mechanical and/or electrical and/or electromechanical non-linearity of the transducer; Converting the digital output signal of the electromechanical model into an analog signal for the transducer, So that the output signal comprises an input voltage signal for the transducer and at least the second non-linear model is a digital wave filter (hereinafter referred to as Wave Digital Filters, WDF) to provide a directly computable function in the discrete-time domain to get the input voltage signal for the transducer.

Abstract: An earbud cover is implemented that secures to an earbud and protects at least the earbud's exterior surface from external damage. The earbud cover includes an upper body portion that conforms to the shape of the earbud's bulky body, a mid-section that conforms to the shape of the earbud's thinner body, and a bottom portion underneath a bottom surface of the earbud. While the upper body portion, mid-section, and bottom portion have been used to describe the earbud, other characterizations of the earbud's design are also possible. The earbud includes a cutout/opening corresponding to the earbud's I/O interface, such as its speaker or microphone. While a single cutout/opening is shown in the pictures, multiple openings may be utilized depending on the specific earbud. The bottom portion of the earbud also includes a hole that may be used to carry around the covers more easily, such as on a keychain.

Abstract: Devices, methods, and computer program products are provided herein for hearing safety. An example hearing safety device configured to be worn by a user includes an earmuff body that defines an interior cavity configured to receive the user's ear therein when worn by the user and an exterior surface opposite the interior cavity. The hearing safety device includes an ear lid attached to a surface of the interior cavity. The ear lid projects into the interior cavity from the surface of the interior cavity and defines a sealing surface configured to substantially seal an ear canal of the user's ear when the hearing safety device is worn by the user. The hearing safety device also includes an adjustment mechanism operably attached to the ear lid and configured to move the ear lid relative the interior cavity of the earmuff body.

Abstract: Aspects are disclosed of an apparatus comprising an assemblage of beads. The assemblage includes a plurality of beads formed from a zeolite and a polymeric binder. At least one bead in the plurality of beads has a shape including a base shape having a continuous exterior formed of a first dome portion and a second dome portion, the first and second dome portions being joined together to form a spheroid with a polar axis, a polar dimension along the polar axis, and a transverse dimension normal to the polar axis, and an indentation formed in one of the first and second domed portions, the indentation having a depth and extending toward a center of the base shape along and in the direction of the polar axis and a width in the direction normal to the polar axis.

Abstract: A fade device includes a processor that couples a crossfader to a mixer, the processor using crossfader input to apply an acceleration or a latency to an audio signal passing through a mixer.

Abstract: Technologies are provided for adaptive control of bias settings in a digital microphone. In some embodiments, a device includes a first component that provides data indicative of a clock frequency of operation in a functional mode of a digital microphone. The clock frequency clocks one or more microphone components having switching activity. The device also can include a second component that determines, using the clock frequency, an amount of bias current to supply to at least a first microphone component of the one or more microphone components. The device can further include a memory device that retains control parameters that include at least one of a first subset of parameters defining a relationship between current and frequency and a second subset of parameters defining a quantization of the relationship. The quantization including multiple bias current levels for respective frequency intervals.

Abstract: Various implementations include conversation assistance audio devices with settings that are adjustable based upon user feedback. In some cases, a computer-implemented method of personalizing a conversation assistance audio device includes: receiving a command from a user for assistance with audio settings in the conversation assistance audio device; applying a baseline set of audio settings to the conversation assistance audio device in response to receiving the user command for assistance; receiving a user command to change the baseline set of audio settings; and applying a modified set of audio settings to the conversation assistance audio device in response to receiving the user command to change the baseline set of audio settings, wherein the modified set of audio settings are applied based upon usage of the conversation assistance audio device and a population model of usage of similar conversation assistance audio devices.

Abstract: The present invention provides a multifunctional electromagnetic transducer including: a housing providing with an accommodation space; a speaker received in the accommodation space, the speaker including: a first vibration system with a voice diaphragm, and a first magnetic circuit system fixed to the housing driving the voice diaphragm to vibrate along a first direction and generate sounds; a vibrator received in the accommodation space driving the multifunctional electromagnetic transducer to vibrate along a second direction, the vibrator including: a second vibration system with a vibration diaphragm, and a second magnetic circuit system flexible suspending on the housing driving the voice diaphragm to vibrate; wherein the voice diaphragm, the voice diaphragm and a housing enclosed a rear chamber.

Abstract: A variable voltage phantom power supply assembly includes a phantom power supply unit having a power input, and one or more audio channels. The variable voltage phantom power supply assembly also includes a variable voltage phantom power supply module having a phantom power supply circuit with a variable voltage controller and a variable voltage phantom power output. A method of customizing at least one performance characteristic of a microphone includes: modifying a phantom power supply to provide a variable voltage phantom power output; connecting a microphone to an input of a variable voltage phantom power supply assembly; adjusting the voltage output of the variable voltage phantom power supply to the microphone; monitoring the performance characteristics of the microphone; and, readjusting the voltage output of the variable voltage phantom power supply to the microphone to obtain at least one desired performance characteristic of the microphone.

Abstract: A method, apparatus, and computer program product are provided for encoding audio events as geo-referenced audio events for use in location establishment. Methods may include: receiving first audio data from a first sensor; establishing a baseline frequency profile; identifying, within the first audio data, a first audio event, where the first audio event satisfies at least one predefined criteria relative to the baseline frequency profile; identify a location corresponding to the first audio event; encoding the first audio event in a database to correspond to the location; receiving second audio data from a second sensor; identifying, within the second audio data, a second audio event; correlating the second audio event with the first audio event; and providing the location in response to the second audio data. The at least one criteria may include a statistically significant change in a prominent frequency in the audio data.

Abstract: Microphones, microphone systems, and methods for capturing and processing sound are described. The microphones and microphone systems may adaptively change the direction from which sound is captured. The microphones and microphone systems avoid the need to provide arrays of microphones, while providing adaptive beamforming without a time delay between each channel of information, and multi-directional sound capture. A dependency between the frequency response and system size is also avoided.

Abstract: Disclosed are a method of controlling a display by a headset with inline control, and related devices. The method includes: detecting whether an headset jack of the display is plugged with the headset; after the headset jack of the display is determined to be plugged with the headset, inputting a detection bias voltage to the headset, and monitoring a feedback signal of the detection bias voltage; in response to detecting a change in the feedback signal of the detection bias voltage, identifying a user's control instruction to the display using the headset according to a control signal sent by the headset; and controlling the display to perform a corresponding display operation according to the control instruction.

Abstract: Example techniques may provide volume enhancements to a media playback system. An example implementation involves a first playback device in a first playback configuration playing audio at a first volume level and storing the first volume level in association with the first playback configuration. The first playback device receives instructions to change to a second playback configuration. Based on receiving the instructions, the first playback device joins a synchrony group with a second zone and adjusts the first playback device to play audio at a second volume level which is based on a volume level of a second playback device in the second zone. While in the second playback configuration, the first playback device receives instructions to change to the first playback configuration and, based on the instructions, leaves the synchrony group and adjusts the first playback device to play audio content at the stored first volume level.

Abstract: Validation of an activation event of a device based on analyzing audio data is disclosed. The device detects an activation event, e.g., an input to a soft-touch button or a wake word detected by a microphone array. Responsive to detecting the activation event, the device captures, via a microphone array on the device, sound from a local area of the device. The device stores the captured sound as audio data in an audio buffer. The device performs a validation of the activation event by analyzing the captured sound. The device performs an action based on a result of the validation.

Abstract: The present disclosure discloses a sounding device including a frame, a vibration system, and a magnetic circuit system. The vibration system includes a diaphragm, and a voice coil. The magnetic circuit system includes a yoke, a magnet assembly, and a magnetic gap. The yoke includes a bottom wall, a side wall in an annular shape extending from an edge of the bottom wall toward the diaphragm, and a flange extending from an end of the side wall close to the diaphragm toward the frame. An end of the flange away from the side wall is fixed to the frame. Compared with the related art, the sounding device disclosed by the present disclosure has a better reliability.

Abstract: Provided is a sensor interface including a first cantilever beam bundle including at least one resonator and a first output terminal, a second cantilever beam bundle including at least one resonator and a second output terminal, and a differential amplifier including a first input terminal electrically connected to the first output terminal of the first cantilever beam bundle and a second input terminal electrically connected to the second output terminal of the second cantilever beam bundle.

Abstract: Provided is a speaker, including: a connector and a magnetic circuit unit and a vibration system that are fixed to the connector. The vibration system includes a first diaphragm fixed to the connector and a voice coil driving the first diaphragm to vibrate and sound. The magnetic circuit unit includes a magnet assembly providing driving force to the voice coil and a mounting member fixing the magnet assembly. A bending portion is formed by bending from an edge of the mounting member toward the first diaphragm, and the bending portion is fixedly connected to the connector. With this structure, the first diaphragm is fixedly connected to the mounting member, so as to strengthen the overall strength of the speaker and prevent the deformation of the speaker in its vibrating direction, thereby improving the quality of the speaker.

Abstract: A protective headgear including an on-ear headset attachable to an inside portion of the protective headgear; a magnetization exhibited that reduces a gap between the compressible foam material of the protective headgear and the on-ear headset; and a method of adjusting the force of the magnetization by a switch adapted to the outer casing of the protective head gear, wherein the switch adjusts the distance between the protective headgear magnet and the on-ear headset magnet.

Abstract: Playback devices can include touch sensor assemblies with one or more integrated antennas. Such touch sensor assemblies can be incorporated into a playback device such as a headphone device. The playback device can include an electrode comprising a first conductor, a second conductor, and a filter coupled between the first and second conductors, a capacitive-touch circuit coupled to the electrode, and a wireless radio coupled to the second conductor. The capacitive-touch circuit is configured to deliver a capacitive sensing signal to the electrode. The wireless radio is configured to facilitate communication over at least one wireless network via the second conductor.