A system for remotely communicating sports instructions that includes a transmitter and an audio receiver. The transmitter includes a transmitter unit configured to transmit wireless signals, a first microcontroller coupled to the transmitter unit, the first microcontroller configured to provide the transmitter unit with a selection signal to wirelessly transmit, and a display screen with plurality of user actuatable input elements coupled to the transmitter unit. The user actuatable input elements respectively correspond to different sports instructions. The first microcontroller is configured to provide the transmitter unit with the selection signal to wirelessly transmit a prewritten text in accordance with actuation of the user actuatable input elements, the selection signal corresponding to a sports instruction. The audio receiver includes a first receiving unit configured to wirelessly receive the prewritten text, and a text to speech converter configured to audibly reproduce the received prerecorded text. The transmitter and the receiver can be connected through a cellular network so that the selection signal can be transmitter and received over the cellular network.

An active noise control system selects one reference sensor providing a reference signal with the largest coherence to a noise signal, among a plurality of available reference sensors, as a first entry of a reference sensor set. After selecting the first entry, the active noise control system repeats a process in which a sensor capable of providing the largest information quantity to a current reference sensor set among remaining sensors is selected as a new entry of a reference sensor set, until a desired number of sensors is reached or a desired control level is reached. When the reference sensor set is determined, the active noise control system utilizes the entries of the reference sensor set to generates a noise control signal suitable for canceling the noise signal.

A covert sports communication system has a transmitter configured to wirelessly transmit coded audio track selection signals. The system includes a receiver that may be worn within headgear. The receiver includes stored audio tracks and is configured to receive coded audio track selection signals from the transmitter, decode the audio track selection signals, and play at least one stored audio track in accordance with the decoded audio track selection signals. The audio tracks may include audio instructions to a participant of a sporting event.

There is provided a communication device comprising: a wireless communication circuit configured to control wireless communication with a portable device in conformity with a specific communication standard; a capacitive sensor circuit configured to detect proximity of an object on a basis of a change in capacitance; an antenna configured to be used for both transmitting/receiving a wireless signal conforming to the specific communication and detecting the capacitance; a high-pass filter disposed between the wireless communication circuit and the antenna; and a low-pass filter disposed between the capacitive sensor circuit and the antenna, wherein the communication device is configured to be disposed in a gripping portion to be gripped by a user carrying the portable device.

Tablet PC (10) includes communication units (11.sub.1, 11.sub.2), antenna terminal (T.sub.1) used to receive one of first and second signals, antenna terminal (T.sub.2) used to receive another one of the first and second signals, terminal switch (40) configured to perform switching between a first coupling state in which communication unit (11.sub.1) and terminal (T.sub.1) are coupled, and communication unit (11.sub.2) and terminal (T.sub.2) are coupled, and a second coupling state in which communication unit (11.sub.1) and terminal (T.sub.2) are coupled, and communication unit (11.sub.2) and terminal (T.sub.1) are coupled, and controller (30) configured to control terminal switch (40) so as to switch to the first coupling state when terminal (T.sub.1) receives the first signal, and terminal (T.sub.2) receives the second signal, and to control terminal switch (40) so as to switch to the second coupling state when terminal (T.sub.1) receives the second signal, and terminal (T.sub.2) receives the first signal.

Example systems relate to wireless head-mounted devices. A wireless head-mounted device may include high-throughput performance miming at millimeter wave band receiving hardware to receive a transmission from corresponding high-powered transmitting hardware included in a computing device. The transmission may include audio, visual, or video data. The wireless head-mounted device may further include a plurality of sensors to collect sensor data. The wireless head-mounted device may further include low-powered transmitting hardware to transmit at least the sensor data collected by the sensors to corresponding low-powered receiving software included in the computing device.

Provided are a shell structure and a terminal device. The shell structure includes a first shell; herein, multiple lock catch structures are installed on an inner surface of the first shell and a first through hole is formed by the lock catch structure. A damping plate and a compression part are sequentially arranged in a direction facing the first shell in the first through hole, and the first through hole is connected with the damping plate in a clamping way.

In some embodiments, techniques are provided for extending the functionality of a receiving unit which is configured to express a state during an event. In some embodiments, a receiving unit configured to receive a first set of transmissions during an event from one or more transmitting units and express a state in response may also be configured to receive a second set of transmissions from other components at a time other than during the event and express a state in response to receiving the second set of transmissions.

A computing system wirelessly receives data from an ear-wearable device and determines, based on the data received from the ear-wearable device, a current position of the ear-wearable device. Additionally, the computing system determines, based on the current position of the ear-wearable device and data regarding a golf course, golf advice data that provides a recommendation regarding play of the golf course. Furthermore, the computing system wirelessly sends audio data to the ear-wearable device. The audio data represents soundwaves of a vocalization of the golf advice data.

A portable loudspeaker includes: an enclosure having a first enclosure portion and a second enclosure portion, which together define an acoustic cavity. The loudspeaker further includes an electro-acoustic transducer disposed within the acoustic cavity, where a first side of the electro-acoustic transducer is secured to the first enclosure portion with fasteners and a second, opposite side of the electro-acoustic transducer is secured to the second enclosure portion with an adhesive. The loudspeaker also includes a strap having a first end that is fixedly coupled to the enclosure and a second end that is releasably coupled to the enclosure, where the second end of the strap is also configured to be coupled to another portion of the strap to form a closed loop.