Abstract: A client device with one or more processors and memory identifies an action mode of a user of the client device in an application while executing the application. The client device detects an event in the action mode. The client device adjusts an audio mixing mode of sound effects in the application (e.g., adjusting a volume of audio associated with the event and a volume of background music for the application) based on the detected event.

Abstract: A filter coefficient group computation device is configured from a means for performing inverse Fourier transform on a frequency characteristic inputted through an input means; a means for performing short-term Fourier transform on a numerical string obtained by the inverse Fourier transform; a means for performing windowing on a frequency domain signal, obtained by the short-term Fourier transform, using a function of which a window length shortens as frequency increases; a means for performing short-term inverse Fourier transform on the frequency domain signal after the windowing; a means for performing overlap addition on a numerical string obtained by the short-term inverse Fourier transform; and a means for determining a numerical string after the overlap addition as a filter coefficient group which forms a filter having the frequency characteristic inputted through the input means.

Abstract: A microphone circuit includes a microphone configured to generate a microphone signal. The microphone circuit also includes a processor configured to perform sound detection based on the microphone signal and to determine whether to enable a component based on the sound detection. For example, the processor may be a digital signal processor (DSP) of the microphone circuit and the component may be external to the microphone circuit, such as a coder/decoder (CODEC), another DSP, and/or an application processor.

Abstract: A method for forming a complete ring network of a plurality of Bluetooth® speakers, the method including populating a configurable speaker register of each of the plurality of Bluetooth® speakers with an address of an upstream Bluetooth® speaker that is in the plurality of Bluetooth® speakers, populating the configurable speaker register of each of the plurality of Bluetooth® speakers with an address of a downstream Bluetooth® speaker that is in the plurality of Bluetooth® speakers, and coupling an audio source to one Bluetooth® speaker of the plurality of Bluetooth® speakers.

Abstract: A wireless speaker system may include a primary speaker including a first transceiver and a second transceiver and programmed to receive audio data from a user device at the first transceiver, and at least one secondary speaker including a receiver and programmed to receive a wireless signal including the audio data from the primary speaker at the receiver, each speaker configured to transmit audio signals consistently there between based on the received audio data.

Abstract: A solid state relay circuit arrangement for audio signals is described, of the type comprising a first MOSFET and a second MOSFET in a back-to-back configuration, adapted to receive an input signal on the source electrode of the first MOSFET and to take the output signal on the source electrode of the second MOSFET, with a driving voltage being applied to the gate electrodes of said first MOSFET and second MOSFET, apt to change, on the basis of its value, the operational state of said first MOSFET and second MOSFET, According to the invention, each of said first MOSFET and second MOSFET includes a respective bypass capacitor arranged between its source electrode and its gate electrode, having such a capacitance value to determine a bypass path for the input signal from the source electrode to the gate electrode in the operating frequency range of said input signal.

Abstract: A microphone device includes an audio signal output circuit that balanced-outputs, through a balanced transmission line, an audio signal output from a condenser microphone unit, a balanced output terminal including a hot terminal, a cold terminal, and a ground terminal connected to the balanced transmission line, a power supply circuit that supplies a phantom power supply to the audio output circuit from the balanced output terminal through the balanced transmission line, and a display circuit including light emitting elements that perform lighting and non-lighting according to an operation of a manual switch, and the display circuit includes constant current elements that generate a constant current through the balanced transmission line, a constant voltage element connected to the constant current elements and which generates a constant voltage, and light emitting elements connected to the constant current elements, and to which the constant voltage by the constant voltage element is applied.

Abstract: One example device includes a camera; a display device; a memory; and a processor in communication with the memory to receive audio signals from two or more microphones or a far-end device; receive first location information and second location information, the first location information for a visual identification of an audio source of the received audio signals and the second location information identifying a direction of arrival from the audio source; receive a first adjustment to a first portion of a UI to change either a visual identification or a coordinate direction of a direction focus; in response to the first adjustment, automatically perform a second adjustment to a second portion of the UI to change the other of the visual identification or the coordinate direction of the direction focus; and process the audio signals to filter sounds outside the direction focus, or emphasize sounds within the direction focus.

Abstract: Systems and methods for real time monitoring of acoustic environment using ultrasound are provided. An example method includes causing production of an acoustic sensing signal. The acoustic sensing signal can be a continuously repeating ultrasonic signal. The method further includes receiving a reflected acoustic signal, the reflected acoustic signal being a representation of an acoustic signal reflected within the acoustic environment. The method further includes analyzing the reflected acoustic signal based at least in part on the acoustic sensing signal to determine properties of the acoustic environment. The acoustic sensing signal can be produced based on a pseudorandom binary sequence. Analyzing the reflected acoustic signal includes correlating the reflected acoustic signal and the acoustic sensing signal to determine a real time estimate of impulse response of the acoustic environment. The method further allows determining that the properties of the acoustic environment have changed.

Abstract: Adaptive filtering is described for use with amplifiers for any wired speaker. In one example, an apparatus includes an audio cable to provide an analog audio signal to an audio transducer, such as a speaker, the audio cable also receiving a modulated noise current, an output amplifier to receive an audio input, to generate an audio output by amplifying the audio input, and to provide the audio input to the audio cable, and a feedback system to receive the audio output and to receive a reference signal and to generate a noise cancellation signal to the output amplifier, the noise cancellation signal to cancel the modulated noise current.

Abstract: A method for providing information about a failure in a virtual engine sound system (VESS) unit for a vehicle includes sending a VESS unit failure message to a cluster, and displaying the failure message on the cluster. In the unit failure information providing method, VESS unit failure information may be provided by the use of a navigation unit or electric/electronic subassemblies.

Abstract: Audio amplification may be improved by controlling an audio amplifier based on the audio signal being amplified. For example, when the audio signal level increases or decreases, a boost voltage provided to an audio amplifier by a boost converter may also be increased or decreased. In another example, when the audio signal level decrease below a certain level, the audio amplifier may be switched from amplifying the audio signal with a boost converter input to amplifying the audio signal with a low voltage input. Control of the audio amplifier may be implemented in a digital boost converter controller coupled to the boost converter and/or the audio amplifier.

Abstract: Example methods, apparatus, systems and articles of manufacture to implement down-mixing compensation for audio watermarking are disclosed. Example watermark embedding methods disclosed herein include determining respective attenuation factors for a plurality of audio bands based on energy values associated with down-mixed audio samples corresponding to a first audio channel of a multi-channel audio signal and a second audio channel of the multi-channel audio signal. Disclosed example watermark embedding methods also include embedding a watermark in audio samples of the first audio channel based on the attenuation factors.

Abstract: A tape drive-implemented method according to one embodiment includes determining, by a tape drive, a format of a magnetic recording tape, and reading from and/or writing to the magnetic recording tape, by the tape drive, according to the format. The format specifies a number of active channels and a contiguous spare area on the magnetic recording tape. The format also specifies compatibility with a second format. The second format specifies a different number of active channels than the number of active channels specified by the format.

Abstract: Apparatus for optimizing beamformers for echo control comprises microphones to receive acoustic signals, echo cancellers (ECs) respectively coupled to the microphones to adaptively cancel echo in the acoustic signals and to generate EC-acoustic signals, and a first fixed beamformer coupled to the ECs to receive the EC-acoustic signals. The null of the first beamformer is steered in a direction of a first environmental noise source that is determined offline by exciting the ECs with normal speech signals and audio playback signals to cause the ECs to generate test EC-acoustic signals, and selecting the first environmental noise source based on loudness weighted centroids of noise in the test EC-acoustic signals. Apparatus may also include a residual echo suppressor coupled to the first fixed beamformer to perform echo suppression on output of the first fixed beamformer and to generate clean signal. Other embodiments are also described.

Abstract: An audio output device that operates on a network to connect with a first source device. The connection to the first source device can be made using a first wireless port, so that the first source device streams a first audio content to the first wireless port of the audio output device. When connected to the first source device, the audio output device generates an advertisement for the network, which communicates that the audio output device is available to receive a connection to another source device. In this way, the audio output device generates a new wireless port to connect to a second source device when the connection with the first source device is active.

Abstract: The present invention relates to a controller for controlling an electronic device. The invention may e.g. be used to control a headset or another electronic device connected to the controller. The controller (1) comprises an elongate controller body (3) having a first body end (4) and a second body end (5). The controller body (3) comprises an elongate rotatable body section (10) adapted to be rotated by a user about a longitudinal axis (11) extending through the first body end (4) and the second body end (5). The rotatable body section (10) has a radially outer side surface (12) extending between a first section end (13) near the first body end (4) and a second section end (14) near the second body end (5). The rotatable body section (10) has a size and shape allowing the user to rotate the rotatable body section (10) about the longitudinal axis (11) by performing a rolling action using three or more fingers (21, 22, 23).

Abstract: Sound based navigation using a portable communications device is presented herein. A portable communications device can include a speaker for generating a sound, and microphone(s) for receiving a reflection of the sound—the reflection including an acoustic wave that has been reflected from an object. Further, the portable communications device can include a timing component configured to determine a time of propagation of the acoustic wave from the speaker to the microphone(s), and a distance component configured to determine a distance of the object from the portable communications device based on the time of propagation of the acoustic wave. Furthermore, the portable communications device can include a mapping component configured to: determine a geographic location of the portable communications device, and create, based on the geographic location and the distance of the object from the portable communications device, a map, indoor map, etc. of objects, structures, etc. comprising the object.

Abstract: A motion signal processing technique modifies digital audio recordings in order to restore a sense of motion, liveliness, and spatial dynamics. The technique compensates for the static presentation of sound created by modern recording and sound synthesis techniques and common modern playback equipment such as headphones and ear buds in order to create a more natural, immersive, and enjoyable listening experience.

Abstract: Aspects of the present disclose involve a method, a device, and a system comprising a processor and a machine-readable storage medium storing a set of instructions for providing audio level safeguards for output audio signals. In example embodiments, the method includes accessing a most recent audio level of an audio output device and determining whether the most recent audio level transgresses a threshold value. Based on determining the most recent audio level transgresses the threshold value, a current audio level output by the audio output device is set to the threshold value. Thereafter, the current audio level is gradually increased, at repeated time intervals, until it reaches the most recent audio level.