Abstract: Apparatus for testing earphone apparatus (10) during manufacture includes a head simulator (30) including an ear simulator (40) defining a passageway (42) leading to an external opening (44), a and an eardrum microphone (46) mounted in the passageway (42) of the ear simulator (40). The apparatus (10) includes one or more of: an ear plate (50) for simulating an outer ear, the ear plate (50) forming part of the ear simulator (40) and defining a substantially planar earphone engagement surface (52) substantially encircling the external opening (44); a mounting guide system for assisting correct placement of earphone apparatus on the head simulator (30) relative to the ear simulator (40); and a test module (100) for performing rapid automated testing of earphone apparatus mounted on the head simulator (30).

Abstract: This disclosure falls into the field of object-based audio content, and more specifically it is related to the field of conversion of multi channel audio content into object-based audio content. This disclosure further relates to method for processing a time frame of audio content having a spatial position.

Abstract: An audio system and method for eliminating audio feedback including a first audio input arranged to receive a first audio signal, a first audio output arranged within a first predefined zone, the first audio output arranged to receive the first audio signal, a second audio output arranged within the first predefined zone, the second audio output arranged to receive the first audio signal, and one or more processors connected to a virtual matrix including a plurality of virtual channels connecting the first audio input, the first audio output, and the second audio output, and the one or more processors arranged to receive the first audio signal and attenuate or eliminate the first audio signal to the first audio output or the second audio output if an audio feedback is detected.

Abstract: The present invention relates to a microphone, and more particularly, to a microphone with a mechanical switch function. A microphone with a mechanical switch function according to the present invention comprises a microphone body, wherein the microphone body comprises a circuit substrate above which a metal cover is disposed, an acoustic cavity formed by the metal cover and the circuit substrate; and a metal elastic piece, wherein a gap is formed between the metal elastic piece and the metal cover, and the metal elastic piece electrically contacts with the metal cover under an effect of a pressing force. By adopting the above-mentioned technical solutions, the present invention provides a microphone with functions of a mechanical switch, and the new type of microphone occupies less space, has a lower cost and is convenient to use.

Abstract: A digital microphone device includes circuitry that can reduce the risk of noise caused due to an idle tone frequency component in a digital signal output by the digital microphone device. In stereo mode and other applications where interference occurs between two or more such microphones, each microphone device includes a digital output having a corresponding idle tone frequency, one of which is offset to shift noise components outside of a desired frequency range.

Abstract: The technology described herein can be embodied in a method for estimating a power spectral density of noise, the method including receiving an input signal representing audio captured using a microphone. The input signal includes a first portion that represents acoustic outputs from two or more audio sources, and a second portion that represents a noise component. The method also includes iteratively modifying a frequency domain representation of the input signal, such that the modified frequency domain representation represents a portion of the input signal in which effects due to the first portion are substantially reduced. The method further includes determining, from the modified frequency domain representation, an estimate of a power spectral density of the noise, and generating a control signal configured to adjust one or more gains of an acoustic transducer. The control signal is generated based on the estimate of the power spectral density of the noise.

Abstract: A recording play method, terminal and non-transitory computer-readable storage medium are provided, where the recording play method includes obtaining a recording file, wherein the recording file comprises saved recording data in all sound source directions via the at least three microphones; receiving a first gesture on an interface displayed on the screen, wherein the first gesture indicates a first recording play direction; determining, according to the first gesture, a first recording data matching the first recording play direction from the saved recording data in all sound source directions; and playing the first recording data matching the first recording play direction.

Abstract: The present disclosure generally relates to systems for maintaining a user's privacy in relation to mobile computing devices. In one general aspect a system includes an acoustically insulated housing, a speaker system, a touchscreen, and a control system. The housing has an interior sized to contain a mobile computing device. The speaker system includes a speaker arranged to direct sound into the interior volume. The control system is configured to perform operations that include causing the speaker system to emit voice obscuring noise into the interior volume of the housing, receiving display data indicating content displayed on a touchscreen of the mobile computing device, causing the touchscreen display to present the display data in a manner that substantially mirrors the content as displayed on the touchscreen of the mobile computing device, and providing control signals indicating user inputs received on the touchscreen to control functions of the mobile computing device.

Abstract: An improved earphone which has stereophonic microphones and which is better suited for connection to such a multimedia device includes two ear units to be worn in or on the ear, which each include at least one sound generator and a microphone for binaural recording of ambient sound, a microphone unit which includes at least one further microphone, an operating unit which is connected via cable to the two ear units and the microphone unit, and a connection unit as interface, which is suitable for connecting the earphone to the multimedia device. For easy handling the earphone has at least two different function modes between which switching can take place both automatically and manually.

Abstract: A method for generating an individualized audio output response for a headset using a machine learning model. One or more images of a portion of a user's head including at least the user's ear are received. One or more features describing the user's ear are identified based on the one or more images. The features are input to a model, and the model is configured to determine an audio output response for the user based on the identified one or more features. The audio output response describes one or more acoustic parameters perceived by the user. An individualized audio output response is generated for the user based on the audio output response, the individualized audio output response configured to adjust one or more acoustic parameters of audio content provided to the user by the headset.

Abstract: A playback device for automatically switching between audio content received from a plurality of media devices may include at least one speaker configured to emit first audio content corresponding to video content received from a first media device. The playback device may also include a wireless transceiver configured to receive data from a second media device and a processor. The processor may be configured to receive an indication of an event at the second media device based on the data, the event indicative of second audio content to be played from the second media device, and instruct the at least one speaker to mute playback of the first audio content and to initiate playback of the second audio content without discontinuing playback of the video content at the first media device.

Abstract: An expandable wireless speaker system and method is disclosed. The speaker system comprises a center module and at least two or more speakers. The center module has a unique identification number and has mechanical connections on at least one side. The center module is configured to receive an external device, wirelessly or directly connected and has a transceiver configured to scan for an unused channel and transmit audio. The speakers each have a mechanical connection on either side to connect to the center module or the other speakers. The two or more speakers are configured to scan the communication spectrum for the center module's unique identification and when the two or more speakers locate the center module's unique identification, the two or more speakers pair with the center module to receive audio. The communication spectrum can be a wireless channel such as 5.8 GHz or the FM radio spectrum.

Abstract: An apparatus and method for preventing an electronic device from recording. The apparatus includes a control unit for generating a first modulation signal and controlling the components of the apparatus; a first modulation unit for modulating the first modulation signal to an FM signal; an ultrasonic signal generation unit for generating an ultrasonic signal, the frequency of which is adjusted by changing the value of at least one of a variable resistor and a variable capacitor depending on the magnitude of the FM signal; an amplification unit for increasing or decreasing the magnitude of the ultrasonic signal; a resonance unit for increasing the voltage to be applied to a transducer by generating resonance; and an ultrasound output unit for converting electrical signals into ultrasonic signals using the transducer and radiating a recording prevention signal, converted into the ultrasonic signal, to the microphone of an electronic device.

Abstract: An electronic apparatus appropriately outputs low-frequency sound to high-frequency sound to enable acoustic reproduction with high sound quality is disclosed. A portable information apparatus includes a first speaker; and an expansion device includes a second speaker. The portable information apparatus includes a mode switching unit for selecting a single mode or a combined mode; and an acoustic adjustment unit for adjusting acoustic data output to the first speaker and/or the second speaker. During the single mode, the acoustic adjustment unit outputs the acoustic data to the first speaker. During the combined mode, the acoustic adjustment unit extracts high-frequency sound from the acoustic data and outputs the high-frequency sound to the first speaker, and extracts low-frequency sound from the acoustic data and outputs the low-frequency sound to the second speaker.

Abstract: An example speaker for providing alerts includes: a housing and a cover forming an integrated unit; a microphone configured to sense an ambient noise level; and a processor configured to adjust a volume of the speaker based upon the ambient noise level. A hinge can be positioned between the housing and the cover to allow the cover to be pivoted relative to the housing from a close position to an open position.

Abstract: A method for security and/or automation systems is described. In one embodiment, the method includes detecting a sound using a microphone, generating an audio signature of the detected sound, comparing the audio signature of the detected sound to an audio signature of a characterized sound, and determining whether a recognizable event occurs based on the comparison. In some embodiments, the microphone is attached to a pipe at the premises.

Abstract: In one example, a headset obtains a first audio signal including a user audio signal from a first microphone on the headset and a second audio signal including the user audio signal from a second microphone on the headset. The headset derives a first candidate signal from the first audio signal and a second candidate signal from the second audio signal. Based on the first audio signal and the second audio signal, the headset determines that a mechanical touch noise is present in one of the first audio signal and the second audio signal. In response to determining that the mechanical touch noise is present in one of the first audio signal and the second audio signal, the headset selects an output audio signal from a plurality of candidate signals including the first candidate signal and the second candidate signal. Headset provides the output audio signal to a receiver device.

Abstract: A system and method to encode and decode multiple audio signals to provide independent control of the audio signals is provided. A host device may encode the audio signals to enable a complete separation of the constituent audio signals when the mixed stream is decoded on a playback device. The gains of the audio signals may be independently controlled before they are mixed to increase the intelligibility of one audio signal relative to another audio signal at the playback device. The ability to separate the constituent audio signals from the mixed signals at the playback device allows the processing operations performed on the constituent audio signals and the associated path latencies to be independently chosen. In addition, in applications where the mixed stream is transmitted from a single host device to multiple playback devices, the constituent audio signals may be selectively masked on a playback device to increase user privacy.

Abstract: Apparatus, systems, articles of manufacture, and methods for volume adjustment are disclosed herein. An example method includes identifying media represented in an audio signal, accessing metadata associated with the media in response to identify the media in the audio signal, determining, based on the metadata, an average volume for the media, and adjusting an output volume of the audio signal based on an average gain value, the average gain value determined based on the average volume for the media.

Abstract: Example techniques involve control of a media playback system involving multiple zones. A control application may include different control interfaces for respective zones of the multiple zones. A control interface for a given zone may include transport controls to control playback in the zone, volume controls to control zone volume level, and an indication of media playing back in the zone. A user may utilize swipe inputs to switch between the control interfaces in order to control different zones.