A portable wireless speaker arrangement includes a speaker module, a rigid casing that at least partially encloses the speaker module, and a user interaction unit adapted to allow user input. The speaker module may include a speaker element for generation of audio and at least one electric circuit configured for receiving, from a source device, a signal representing the audio and configured for providing an electric output signal to be fed to the speaker element for the generation of the audio. The speaker module may be received by the casing to allow for insertion thereof into the rigid casing and removal thereof from the casing. The casing at least partially encloses the speaker module in that the casing includes an opening in which the speaker element of the speaker module is arranged. The casing may include a set of battery elements that is integrated with the casing.

A hybrid input networked subwoofer includes a traditional line-in analog audio input for receiving analog audio content from non-networked audio source devices together with wired and/or wireless network interfaces for receiving digital audio content from one or more networked audio devices.

In some embodiments, a low voltage system can include a capacitor between an output node of an amplifier and ground, with the output node connectable to a load, and the amplifier configured to operate with a series of pulses. The low voltage system can further include a monitoring circuit configured to monitor a voltage at the capacitor against a desired low voltage value, and a control system configured to generate the series of pulses for the amplifier, and to control charging and discharging of the capacitor based on an output of the monitoring circuit to regulate the voltage at the output node at approximately the desired low voltage value.

An acoustic noise reduction (ANR) headphone described herein has current detection circuitry that detects current consumed by an acoustic driver amplifier as a result of pressure changes due to a tapping of the headphone. Tapping may be performed to change an audio feature or operating mode of the audio system for the headphone. The current detection circuitry senses a characteristic of the current consumed by the acoustic driver amplifier that can be used to determine an occurrence of a tap event. Examples of a characteristic include an amplitude, waveform or duration of the sensed current. Advantageously, the ANR headphones avoid the need for control buttons to initiate the desired changes to the audio feature or operating mode.

This document describes techniques and systems that enable a range extender device. The techniques and systems include a user device that includes a housing with an audio sensor, a heat sink assembly, a circuit board assembly, and a speaker assembly positioned within the housing. The housing includes a top housing member connected to a bottom housing member. The top housing member includes a concave-down top-end portion connected to a generally-cylindrical vertical wall via rounded corners. The heat sink assembly includes a heat sink and one or more antennas positioned proximate to an inner surface of the vertical wall. The circuit board assembly is positioned within the housing and proximate to the heat sink assembly, and the speaker assembly is positioned within the housing and connected to the circuit board assembly. Also, a light ring assembly is connected to a bottom exterior surface of the bottom housing member.

Magic cube speaker with charging stand, charging block, and methods for controlling the same, comprising a magic cube module having a liner with a cavity inside and splicing blocks installed on surface of the liner, a speaker inside the cavity, a charging interface, and a button mounted to the splicing block. The splicing block comprises sound passages formed by a sound inlet port, a sound outlet port, and a middle section between the sound inlet and outlet ports. A first sound transmission channel is formed by the cavity inside the liner, the sound transmission holes, the sound inlet port, the hollow space inside the splicing block, and the sound outlet port, and a second sound transmission channel is formed by the cavity inside the liner, the sound transmission holes, the sound inlet port, the hollow space inside the splicing block, and the plurality of the micro holes.

The present disclosure relates generally to providing a flexible patch and system for communicating through hard plastic masks such as CPAP/BiPAP® masks. Using electronic circuitry and novel designs, the present systems and methods can detect speech vibrations and output audible speech from hard plastic mask wearers. For example, in certain embodiments, the present systems and methods can recognize speech through a CPAP/BiPAP® mask, filter out non-human voice related noise, and output the resulting speech of the mask wearer.

A tactile audio system and associated methods are disclosed. In one example, the tactile audio system includes a signal processor configured to separate an input signal into a transient group and a sustained group. In one example, the tactile audio system includes a signal processor configured to separate an input signal into a plurality of frequency bands for each of the transient group and the sustained group. A number of transducers are provided to generate a tactile response corresponding to portions of the separated audio signal.

An audio-enhanced furniture system comprises: a furniture assembly; an upholstery fabric at least partially covering the furniture assembly; and a speaker system positioned within the furniture assembly, the speaker system including a speaker covered by the upholstery fabric. The speaker is configured to be tuned to compensate for sound being emitted from the speaker through the upholstery fabric. A method of tuning a speaker to compensate for sound being emitted through upholstery fabric comprises: selecting a baseline equalization, configuring the speaker to emit sound at an actual equalization approximate to the baseline equalization; covering the speaker with an upholstery fabric; measuring a resultant equalization as the speaker emits sound through the upholstery fabric; calculating a differential equalization; and reconfiguring the audio system to emit sound from the speaker through the upholstery fabric according to the baseline equalization by adjusting the actual equalization by the differential equalization.

Techniques are described for dynamically changing a power draw from a power source of a portable device based on an audio output of the portable device. In an example, the portable device determines that an audio signal to be output by the portable device is associated with an audio mode. The portable device sets a voltage of a power converter of the portable device to a voltage level based at least in part on the audio mode. An amount of power is supplied from a power source of the portable device to the power converter based at least in part on the voltage level. In addition, the portable device outputs the audio signal based at least in part on the amount of power.