A noise reduction device reduces noise occurring in a space inside a mobile apparatus. The noise reduction device includes: a status signal receiver to which a status signal indicating a status of a movable component provided for the mobile apparatus is inputted; and a controller that, when the status signal inputted indicates that the movable component is not in a predetermined base status, performs control over the output of the cancelling sound differently in each case, depending on whether or not the status signal includes information indicating a shift amount of the movable component.

A venue includes a display screen, a performance stage, and an audience area. The display screen has (i) an inner periphery, (ii) an outer periphery, and (iii) at least one of a non-linear or a curved cross-sectional shape that is at least partially revolved around a center point. The performance stage (i) is positioned between the inner periphery and the outer periphery of the display screen and (ii) at least partially extends along at least one of the inner periphery or the outer periphery of the display screen. The audience area is positioned between the inner periphery and the outer periphery of the display screen.

The present technology relates to a sound processing device, a sound processing method, and a program that enable a sound signal adapted to an intended use to be output.

A sound signal adapted to an intended use can be output by providing a sound processing device including a signal processing part that processes a sound signal picked up by a microphone, and generates a recording sound signal to be recorded in a recording device and an amplification sound signal different from the recording sound signal to be output from a speaker. The present technology can be applied to, for example, a sound amplification system that performs off-microphone sound amplification.

A control device is a control device for controlling a plurality of receiver devices for receiving a sound signal transmitted from a wireless microphone by radio, the control device includes an information acquisition part that acquires quality information indicating a quality of the sound signal received by the plurality of receiver devices, and a determination part that determines, on the basis of the quality of the sound signal indicated by the quality information, a non-output receiver device that does not cause a speaker to output the sound based on the sound signal out of the plurality of receiver devices.

A conversation support device includes: a speaker; a microphone; a noise source acquisition unit that acquires a noise signal indicating noise; a first calculator that calculates a transfer characteristic of a secondary path between the speaker and the microphone; an echo cancellation unit that cancels an echo by using the transfer characteristic of the secondary path; a second calculator that calculates a coefficient of an adaptive filter, based on the transfer characteristic of the secondary path and the noise signal; and an active noise cancellation controller that generates a noise cancelling signal by using the coefficient of the adaptive filter and the noise signal. The noise cancelling signal is for controlling cancellation of the noise.

Described herein is an audio device with a microphone which may adapt the audio output volume of a speaker by either increasing or decreasing output volume based on an audio input volume from a user and a distance from the user to the audio device. The audio device may also adapt its output volume to lower the audio output based on detecting one or more interruptions including occupancy and acoustic sounds.

Method to perform dynamic beamforming to reduce SNR in signals captured by head-wearable apparatus starts with microphones generating acoustic signals. Microphones are coupled to first stem of the apparatus and to second stem of the apparatus. First and second beamformers generate first and second beamformer signals, respectively. Noise suppressor attenuates noise content from the first beamformer signal and the second beamformer signal. Noise content from first beamformer signal are acoustic signals not collocated in second beamformer signal and noise content from second beamformer signal are acoustic signals not collocated in first beamformer signal. Speech enhancer generates clean signal comprising speech content from first noise-suppressed signal and second noise-suppressed signal. Speech content are acoustic signals collocated in first beamformer signal and second beamformer signal.

A public address method for live broadcast, in a helmet, of an audio signal conditioned from a plurality of raw audio channels, includes a pre-processing phase including the operations that consist of taking into account characteristics of the auditory perception of the listener; correcting each channel as a function of the characteristics of the auditory perception of the listener; a mixing phase including the production, from the channels thus pre-processed, of a mixed audio signal; a post-processing phase including the operations that consist of: measuring the sound level of a background noise; correcting the mixed audio signal as a function of the sound level of the background noise; a phase of reproducing, in the helmet, the conditioned audio signal resulting from post-processing.

A headphone set includes receivers, a signal processor that applies a given processing to each of audio signals received by respective ones of the receivers, a first adder that adds left signals together, to which the given processing is applied, a second adder that adds right signals together, to which the given processing is applied, a first sound output device that outputs a sound based on an output signal of the first adder, and a second sound output device that outputs a sound based on an output signal of the second adder.

The amount of far-field noise transmitted by a primary communication device in an open-plan office environment is reduced by defining an acoustic perimeter of reference microphones around the primary device. Reference microphones generate a reference audio input including far-field noise in the proximity of the primary device. The primary device generates a main audio input including the voice of the primary speaker as well as background noise. Reference audio input is compared to main audio input to identify the background noise portion of the main audio signal. A noise reduction algorithm suppresses the identified background noise in the main audio signal. The one or more reference microphones defining the acoustic perimeter may be included in separate microphone devices placed in proximity to the main desktop phone, microphones within other nearby desktop telephone devices, or a combination of both types of devices.