Systems and methods herein provide directed sound to venues, including a queue line and locations offering multiple viewing devices with different audio streams. Directed sound can be sent to various locations in the queue line to reach specific individuals, positions in the queue line, etc. A queue rate may be used to determine current locations in the queue line. The directed transmission of sound waves can provide the directed sound through modulation of the sound on an ultrasonic carrier. In connection with directing sound to a specific location in a venue, one or more individuals can be tracked according to an indoor positioning system to send a sound message using a modulated ultrasonic carrier.

A vehicle includes a first voice output section, a second voice output section, and a third voice output section which are arranged side by side in a vehicle width direction of the vehicle. If the vehicle speed is a first threshold or less, the vehicle causes at least one of the first voice output section, second voice output section, and third voice output section to output noise sound.

An aspect of the present invention relates to an active noise cancelling or an active noise gating system that applies an algorithm for reducing ambient noise. The active noise cancelling system may be used to cancel undesired background noise but for an audio signal which is desired to be heard by the user. The present invention acts as a noise gate, wherein the algorithm(s) actively senses ambient noise levels and the algorithm stored in system memory instructs the device to mute a microphone at or above certain preset noise levels. The preset levels in which the system may mute background noise may be applied by the user using a slide bar that the user may manually adjust to apply more or less noise gating

A speaker system includes a wearable speaker capable of outputting a first sound which is a voice of a communication partner of a talker and a second sound, a microphone, and a sound processing device which processes a sound output from the wearable speaker and a sound picked up by the microphone. The sound processing device generates a reference signal by synthesizing a first signal indicating the first sound and a second signal indicating the second sound, outputs the first signal and the second signal to the wearable speaker, obtains a sound pickup signal including the voice of the talker from the microphone, performs, on the sound pickup signal, a process of cancelling the sound component output from the wearable speaker by using the reference signal, and outputs the sound pickup signal on which the cancellation process has been performed.

Described herein is a speakerphone system (system) comprising: at least one loudspeaker, the loudspeaker adapted to generate mechanical vibrations on an enclosure of the system; at least one microphone (mic) adapted to convert an input sound acoustic signal into an input sound electrical signal and adapted to convert the mechanical vibrations into a mechanical vibrations electrical signal, and to output both of the input sound electrical signal and the mechanical vibrations electrical signal as a mic output signal; at least one mechanical vibration sensor (MVS) adapted to convert the mechanical vibrations to a mechanical vibration error signal to output the mechanical vibration error signal as an MVS output signal; and circuitry adapted to subtract the MVS output signal from the mic output signal and output the resultant signal as a speakerphone output signal.

A voice signal processing method includes acquiring a near-end noise signal and a near-end voice signal by using at least one microphone, acquiring a far-end voice signal according to an incoming call, determining a noise control parameter and a voice signal change parameter based on at least one of information about the near-end voice signal, information about the near-end noise signal, or information about the far-end voice signal, generating an anti-phase signal of the near-end noise signal based on the noise control parameter, changing the far-end voice signal to improve articulation of the far-end voice signal based on information related to at least one of the voice signal change parameter, the near-end noise signal, or the anti-phase signal, and outputting the anti-phase signal and the changed far-end voice signal.

A method and system for operating a signal filter device are provided in the present disclosure. The signal filter device may include M adaptive filters, M first analysis filters, M second analysis filters, and a controller. M may be an integer above two. The method may include generating, by the M first analysis filters, M first sub-band signals based on an input signal. The method may also include generating, by the M second analysis filters, M second sub-band signals based on a reference signal. The method may further include adjusting, by the controller, the working states of the M adaptive filters based on correlations between the M first sub-band signals and the M second sub-band signals.

A fan noise cancellation device comprises a base with a resonant ring formed with a plurality of resonance channels and a cover coupled to the base. Each resonance channel comprises an inner channel and an outer channel. Each inner channel has an opening to the resonant ring and has a length corresponding to a frequency. A baffle positioned in each inner channel determines an effective length of the inner channel. The inner channel baffles are coupled to the cover, wherein rotation of the cover relative to the resonance ring changes the position of the inner channel baffles to change the effective lengths of the inner channels to adjust the fan noise cancellation waveform frequency. Vanes on the cover are positioned in an airflow such that the airflow rotates the cover, and a spring in each resonance channel counteracts the rotation to adjust the inner channels.

Apparatuses, systems, devices, and methods for a face mask for facilitating conversations are disclosed. A face mask includes a microphone located on an inside of the face mask, a processor located on the inside of the face mask and connected to the microphone, and a memory located on the inside of the face mask that stores code executable by the processor. The code is executable by the processor to capture, using the microphone, audio spoken by a user wearing the face mask, determine a mode that the face mask is in for transmitting the captured audio to a destination, and transmit the captured audio to the destination based on the determined mode.

A pervasive listening method including steps of inserting at least one forced gap in a playback signal (thus generating a modified playback signal), and during playback of the modified playback signal, monitoring non-playback content (e.g., including by generating an estimate of background noise) in a playback environment using output of a microphone in the playback environment. Optionally, the method includes generation of the playback signal, including by processing of (e.g., performing noise compensation on) an input signal using a result (e.g., a background noise estimate) of the monitoring of non-playback content. Other aspects are systems configured to perform any embodiment of the pervasive listening method.