A portable speaker unit that includes a battery-powered, portable wireless speaker and can be seamlessly incorporated and operate as a speaker element of the vehicle speaker system. The portable speaker unit includes 2.1 channel audio capability with individually sealed speaker chambers for each of the 3 speakers within a housing. The portable speaker unit can be electrically and mechanically interfaced with the vehicle speaker system through a vehicle mount. The portable speaker unit can also operate as a portable wireless speaker when removed from the vehicle interface.

A headphone stand with a base, a stem extending vertically therefrom, and a holder affixed to the stem at or near the top. The holder may be lined, cushioned or padded. The stem is hollow in whole or in part. A recharging cable and plug (which may be a power plug, USB plug, or other form of plug) extends upwards from the base inside the stem, and emerge from an opening located in the stem. The portion of the cable corresponding to the opening is shaped so that the cable forms the cover for the opening when in the neutral position. The outside of the cable may be curved to match the curvature of the stem, and similarly colored, so that when in place as a cover for the opening, the plug on the cable is facing the interior of the stem and this section of the cable appears to be part of the stem.

An electronic device for determining a type of an audio device plugged into the electronic device includes an audio port configured to receive a plug of the audio device, a plug detection system configured to determine a plug type of the audio device from the audio port, and a display configured to display the plug type. The plug type includes a three-section plug and a four-section earphone plug. The three-section plug is either a three-section earphone plug or a three-section external speaker plug.

Signal processing for an acoustic sensor bi-directional communication channel is presented herein. The acoustic sensor can comprise a micro-electro-mechanical system (MEMS) transducer configured to generate, based on an acoustic pressure, an audio output; and a bi-directional communication component configured to send and/or receive data that has been superimposed on the audio output using common mode signaling, time division multiplexing, or frequency separation. In an example, a signal processing component is configured to send the audio output directed to an external device utilizing differential mode signaling between respective pins of the acoustic sensor; and send the data utilizing the common mode signaling comprising a sum of voltages of the respective pins. In other examples, the signal processing component is configured to send and/or receive the data, and send the audio output, during different time periods; or send the data based on a frequency range outside an audio band.

Disclosed is a system and method for generating a model of the geometric relationships between various audio sources recorded by a multi-camera system. The spatial audio scene module associates source signals, extracted from recorded audio, of audio sources to visual objects identified in videos recorded by one or more cameras. This association may be based on estimated positions of the audio sources based on relative signal gains and delays of the source signal received at each microphone. The estimated positions of audio sources are tracked indirectly by tracking the associated visual objects with computer vision. A virtual microphone module may receive a position for a virtual microphone and synthesize a signal corresponding to the virtual microphone position based on the estimated positions of the audio sources.

An in-ear hearing device having an ear interfacing portion integrally formed with an elongated stem portion, wherein the ear interfacing portion extends away from the elongated stem portion; a first acoustic port formed in the ear interfacing portion; a speaker disposed in the ear interfacing portion and aligned to emit sound from the acoustic port; a plurality of electrical contacts disposed at an end of the stem portion, the plurality of electrical contacts including first and second contacts; a second acoustic port formed at the end of the elongated stem portion between the first and second contacts; a microphone disposed in the stem portion; and a channel that fluidically couples the microphone to the second acoustic port.

A host device is connected via universal serial bus (USB) connections to one or more external devices with respective speakers. The host device synchronizes playback of audio through the speakers of the USB-connected external devices by requiring devices to implement a deterministic latency between receipt of a start playback request, and requiring devices to slave their audio clocks to USB start-of-frame tokens, and determining a buffered start time for starting data transmission to the respective USB devices. The buffered time equates to the current time of the USB host plus an additional time buffer. The host device waits until the buffered start time, and then starts transmitting the audio stream to the external devices, which, in turn, begin playing the audio data on the next available clock cycle, frame, or microframe.

An audio output device controls the application of active noise cancellation (ANC) levels based on a current status of the device. The audio output device includes a communication interface configured to provide a wired or wireless connection to a playback device, a signal detector configured to detect an audio signal provided through the communication interface, an ANC module configured to apply a first-level ANC to the audio signal, and a control unit configured to determine a level of the ANC to be applied by the ANC module. Upon determining that the audio signal is not provided based on information provided from at least one of the communication interface or the signal detector, the control unit instructs the ANC module to perform a second-level ANC.

Systems and methods for audio plug type detection excursion are described. In some embodiments, a method may include: receiving an audio plug at an audio jack; grounding a sleeve terminal of the audio jack; applying an electrical current to a second ring terminal of the audio jack; and measuring a voltage between the second ring terminal and the sleeve terminal. In other embodiments an electronic circuit may include a controller and a memory coupled to the controller, the memory having program instructions stored thereon that, upon execution by the controller, cause the controller to: ground a sleeve terminal of an audio jack; apply an electrical current to a second ring terminal of the audio jack; and measure a voltage between the second ring terminal and the sleeve terminal.

A cable assembly for electronic devices such as cellular telephones and music devices is disclosed. The cable assembly can comprise either one or two earpieces, each of which is configured to be received into the concha of a user's ear. The earpiece(s) can be configured so as to be held in place by at least one anatomical structure of the concha. A speaker can be in acoustic communication with each earpiece. A cable can be configured to communicate a signal representative of sound from the electronic device to each earpiece. A microphone can be permanently attached or removably attachable to the cable to facilitate use with a cellular telephone. The cable assembly can facilitate hands free operation of a cellular telephone and can facilitate listening to a music device. Other implementations and related methods are also disclosed.