A circuit and a method for controlling an audio adapter are provided. The audio adapter includes a button and a microphone, and the microphone is adapted for generating a recorded data. The control circuit includes a button detection circuit, a first-in, first-out (FIFO) data buffer, a USB endpoint buffer, a mute circuit and a USB endpoint control circuit. The button detection circuit is used for detecting whether the button is triggered. The FIFO data buffer is used for storing the recorded data. The USB endpoint buffer is used for storing the recorded data. The mute circuit is used for controlling whether the recorded data is transmitted to the USB endpoint buffer according to whether the button is triggered. The USB endpoint control circuit is used for controlling whether the audio adapter outputs the recorded data according to whether the button is triggered.

A headset device includes a first earpiece configured to receive a reference sound and to generate a first reference audio signal based on the reference sound. The headset device further includes a second earpiece configured to receive the reference sound and to generate a second reference audio signal based on the reference sound. The headset device further includes a controller coupled to the first earpiece and to the second earpiece. The controller is configured to generate a first signal and a second signal based on a phase relationship between the first reference audio signal and the second reference audio signal. The controller is further configured to output the first signal to the first earpiece and output the second signal to the second earpiece.

In example implementations, an apparatus is provided. The apparatus includes an adaptive filter and a double talk detector in communication with the adaptive filter. The adaptive filter is to calculate a transfer function with coefficients for a particular time that is applied to an output signal of a microphone to cancel echoes caused by a reference signal in the output signal of the microphone. The double talk detector is to determine a peak of the coefficients, detect double talk based on a location of the peak of the coefficients, and transmit a pause signal to the adaptive filter in response to detection of the double talk, wherein the pause signal is to pause a calculation of updates to the coefficients by the adaptive filter.

A headset adapter and a headset system for voice communication comprising a headset and a headset adapter as well as a method of enabling microphone transmission to a host device are provided. The headset comprises at least one earphone having a headset speaker, a headset microphone and a headset transceiver, the headset adapter being configured to interconnect the headset and a host device, the headset adapter comprising an adapter processor, a host interface, such as a host interface interconnecting the adapter processor and the host device, an adapter transceiver configured to establish a wireless communication link with the headset. The adapter furthermore comprises a controller configured to enable and disable the headset microphone. The adapter processor is configured to receive a request for headset microphone activation or microphone deactivation, for example from the host interface, and in response to receiving the request providing a control signal to the controller to enable or disable the headset microphone. The controller may thus activate the transceiver to configure the wireless communication link with the headset.

Provided is a method of removing an earphone noise of a portable terminal includes: recognizing a connection of an earphone through an interface unit; applying power to a mike bias port in case the earphone is recognized; sensing a signal which indicating a detachment of the earphone from the interface unit during applying power to the mike bias port; and discharging the power of the mike bias port when the detachment occurs.

A method for communicating with a given device that is located at a given direction, the method may include transmitting a triggering signal, by a communication device and over a directional communication link; receiving, by the communication device, one or more responses to the triggering signal, wherein the one or more responses originate from one or more devices; participating in determining of whether the one or more devices comprises the given device or receiving indication about whether the one or more devices comprises the given device; and when the one or more devices comprises the given device then attempting, by the communication device, to establish communication with the given device.

Provided is an electronic apparatus. The electronic apparatus includes an audio receiver configured to obtain an audio signal of sound output by an external object; a sensor configured to sense a posture of the electronic apparatus; a display; and a processor configured to, based on the audio signal that is obtained by the audio receiver, determine a direction in which the external object is located with respect to the electronic apparatus, and control the display to display a graphical object that corresponds to the external object based on the posture of the electronic apparatus sensed by the sensor and the direction in which the external object is located.

Disclosed herein are method and device for processing received sound. The method includes receiving at least three sets of sound sent by at least three microphones of an apparatus; calculating a position of a sounding point in a three-dimensional space according to the at least three sets of sound; and adjusting a physical position of the apparatus according to the position of the sounding point in the three-dimensional space and an optimal sound receiving region of the apparatus, so as to approach or contain the position of the sounding point relative to the optimal sound receiving region of the apparatus. The physical position includes a spatial position and orientation of the apparatus. The embodiments can accurately determine the position of the sounding point, and then adjust state of the apparatus according to the position of the sounding point, to ensure the optimization of the sound reception effect.

Example implementations disclosed herein can be used to generate a local sound signal corresponding to utterances of a user and other sounds detected by a microphone array coupled to a communication device and to condition the local sound signals to separate the utterances of the user from the other sounds to generate a conditioned sound signal. The conditioned sound signals are evaluated to generate a local quality score for the conditioned sound signals, and when the local quality score of the conditioned sound signals is below a threshold associated with the communication device, a local feedback message indicating a local user position change can be generated. The local feedback message can include instructions for the user to move to another location to improve the quality of the condition sound signals.

Systems, methods, devices and non-transitory, computer-readable storage mediums are disclosed for location-tracking wireless devices. In an embodiment, a method performed by an electronic device comprises: playing, or initiating the playing of, a sound through a loudspeaker of an accessory device via a communication link. The sound is played at a specified frequency that utilizes a frequency response of the loudspeaker (or loudspeaker plus speaker enclosure). The sound is received through two or more microphones of the electronic device and filtered by one or more filters. The one or more filters are configured to pass the sound at or around the specified frequency and to reduce masking of the sound by ambient noise. The filtered sound is associated with direction data generated from sensor data provided by one or more inertial sensors of the electronic device. In another embodiment, the specified frequency is higher than the maximum human hearing range.