Embodiments of the present invention provide a vehicle privacy system (700), comprising audio input means (130, 190, 720) for receiving an external audio signal (725) indicative of audio from within a vehicle (900), audio source means (710, 910) for receiving the external audio signal (725) and determining an output audio signal (735) based thereon for reducing an external intelligibility of speech within the vehicle (900), and audio output means (145, 146, 147, 730, 920) for receiving the output audio signal (735) and outputting audio (925) corresponding thereto to be at least partly audible external to the vehicle (900).

There is provided an information processing device, an information processing method, and a program that can suppress hindrance to viewing/listening to content. A control unit controls output of a tactile stimulus in a case where notification information is received during output of content including sound. Further, the control unit performs a process of controlling the tactile stimulus in response to the content or a process of controlling the content in response to the tactile stimulus. The present technology can be applied to, for example, a mobile device such as a smartphone and the like capable of reproducing content including sound.

This application discloses a sound masking method and apparatus, and a terminal device. When the terminal device uses a receiver as an output end of an audio signal, the terminal device determines, based on the audio signal, a masking sound signal, and then transmits the masking sound signal by using a speaker. The masking sound signal is determined based on the audio signal, and a difference between a distance from the speaker to a far field and a distance from the receiver to the far field is small. Therefore, the masking sound signal can better mask a leaked sound of the receiver and prevent information leakage in a call sound.

A method performed by a wearable audio output device worn by a user is provided for controlling external noise attenuated by wearable audio output device. A speech is detected from a user wearing the wearable audio output device, wherein the audio output device has active noise reduction turned on. It is determined, based on the detecting, that the user desires to speak to a subject in the vicinity of the user. In response to the determining, a level of noise reduction is reduced to enable the user to hear sounds external to the audio output device. It is determined that the user desires to speak to the subject by detecting at least one condition of a plurality of conditions.

Arrangements for communication and/or noise attenuation within an aircraft, and aircraft and methods for making aircraft including such arrangements are provided. In one example, an arrangement includes an array of first microphones cooperatively configured to be directed towards a first aircraft operator when disposed in a first cockpit seat to receive a first communication input from the first aircraft operator. An array of first speakers is cooperatively configured to be directed towards the first aircraft operator when disposed in the first cockpit seat to provide a first communication output to the first aircraft operator.

An audio processing system includes at least one first microphone, at least one adaptive filter, and a processor. The at least one first microphone acquires a first audio signal and outputs a first signal based on the first audio signal. The first audio signal includes at least one of a first audio component generated at a first position and a second audio component generated at a second position different from the first position. The first signal is input to the at least one adaptive filter. The at least one adaptive filter outputs a passing signal based on the first signal. The processor, when executing a program stored in a memory, performs: making a determination of which of the first audio component and the second audio component the first audio signal includes more; and controlling a filter coefficient of the adaptive filter based on a result of the determination.

The present invention relates to a novel animal-shaped wireless baby monitor device. The device is configured to capture video and audio of a baby being monitored and to transmit same to a remote electronic transceiver device. The monitor device includes a pair of flexible ears that can be folded to clamp the device onto a surface such as a crib bar. The device further includes a pair of clamping slots on the rear surface for receiving a clamp for clamping the device to a surface. The device communicates with a device-monitoring software application installed in the electronic device and receive configuration and communication requests from the application. The device can be a part of an Internet of Things (IoT) network.

An audio device with acoustic echo cancellation includes a device cabinet having a cabinet interior; a first open back driver receiving a first open driver input from an audio source; a second open back driver receiving a second open driver input from the audio source, wherein the first open back driver and the second open back driver are acoustically coupled to the cabinet interior; a reference microphone located in the cabinet interior to record a reference microphone signal based on sound emitted within the cabinet interior by the first open back driver and the second open back driver based on the first open driver input and the second open driver input, respectively; and an acoustic echo cancellation block subtracting a representation of the reference microphone signal from a representation of a set of input microphone signals to provide an echo-cancelled output.

A howling detector is described that is configured to receive an input signal and to determine measure of the linearity of a logarithmic representation of the energy of the input signal. In some examples, this triggers gain adjustment (e.g. of a noise control unit) and, in some further examples, the amount of the gain adjustment may be based on an estimation of the maximum stable gain of a noise control unit.

The overall performance of an ANC system may be improved by configuring the ANC system to perform adaption in the frequency domain. The ANC systems may be configured to update an algorithm of an adaptive filter based, at least in part, on the first input signal, the second input signal, and a feedback signal that is based on an output of the adaptive filter. Updating may include changing parameters of the algorithm based on a SDR based, at least in part, on the first input signal. Updating may also include normalizing a step size and processing at least full band information for the input signal in a frequency domain to generate coefficient values for the algorithm. Updating may also include applying a frequency domain magnitude constraint on adaptive filter coefficients.