A headset includes: a hollow housing (10) to be worn at an ear of a user; a cylindrical ear canal insertion part (12) that is a portion of the housing (10), and that is provided at a portion of the housing (10) at a side of an ear canal; a driver (14) for signal output, provided at an interior of the housing (10); a microphone (18) provided so as to collect a signal propagating at a second hollow part (16A), extending from inside an ear canal insertion part (12) and different from a first hollow part (12A) inside the ear canal insertion part (12), through which a signal output from the driver (14) propagates; and a computation unit (22) configured to measure a temperature inside the ear canal based on a collected signal collected by the microphone (18) at a time when a measurement signal is output from the driver (14).

A sound measuring device includes: a light source that emits a laser beam; a frame including at least one reflective surface that faces a predetermined space through which sound travels, and transversely surrounds the predetermined space with respect to a sound propagation direction; and a light receiver that receives the laser beam multiply reflected by the at least one reflective surface. The at least one reflective surface is disposed to multiply reflect and cross the laser beam in the predetermined space as viewed from the sound propagation direction.

The present teachings relate to an electronic device comprising: a first module for generating an audio signal; a second module for generating an ultrasonic signal; a mixer for generating a combined signal; a transmitter for outputting an acoustic signal dependent upon the combined signal; and, a processing means for controlling the ultrasonic signal; wherein, in response to receiving a first instruction signal for initiating the ultrasonic signal, the processing means is configured to increase the amount of the ultrasonic signal in the combined signal from an essentially zero value to a predetermined value over a predetermined enable time-period. The present teachings also relate to an electronic device configured to decrease the amount of the ultrasonic signal in the combined signal from an essentially zero value to a predetermined value over a predetermined disable time-period, and to an electronic device configured to remove the audio signal from the combined signal whilst preventing pop-noise, and to an electronic device capable of replacing the ultrasonic signal whilst minimizing the processing time. The present teachings further relate to a method for reducing the occurrence of pop noise in an acoustic signal associated with: initiating the ultrasonic signal in the combined signal, terminating the ultrasonic signal in the combined signal, terminating the audio signal in the combined signal, and replacing the ultrasonic signal in the combined signal. The present teachings also relate to a computer software product for implementing any of the method steps disclosed herein, and to a computer storage medium storing the computer software herein disclosed.

The present teachings relate to an electronic device comprising: a first module for generating an audio signal; a second module for generating an ultrasonic signal; a mixer for generating a combined signal; a transmitter for outputting an acoustic signal dependent upon the combined signal; and, a processing means for controlling the ultrasonic signal; wherein, in response to receiving a first instruction signal for initiating the ultrasonic signal, the processing means is configured to increase the amount of the ultrasonic signal in the combined signal from an essentially zero value to a predetermined value over a predetermined enable time-period. The present teachings also relate to an electronic device configured to decrease the amount of the ultrasonic signal in the combined signal from an essentially zero value to a predetermined value over a predetermined disable time-period, and to an electronic device configured to remove the audio signal from the combined signal whilst preventing pop-noise, and to an electronic device capable of replacing the ultrasonic signal whilst minimizing the processing time. The present teachings further relate to a method for reducing the occurrence of pop noise in an acoustic signal associated with: initiating the ultrasonic signal in the combined signal, terminating the ultrasonic signal in the combined signal, terminating the audio signal in the combined signal, and replacing the ultrasonic signal in the combined signal. The present teachings also relate to a computer software product for implementing any of the method steps disclosed herein, and to a computer storage medium storing the computer software herein disclosed.

A master reproduction apparatus is a master reproduction apparatus capable of executing synchronous reproduction of audio data together with one or more slave reproduction apparatuses. The master reproduction apparatus includes a plurality of light emitting elements, a generation unit, a transmission unit, and a light emission control unit. The generation unit that generates illumination information, in which light emission modes are associated with the plurality of light emitting elements, on the basis of analysis data obtained by analyzing audio data. The transmission unit that transmits the generated illumination information to the one or more slave reproduction apparatuses. The light emission control unit that causes the plurality of light emitting elements to emit light in the light emission modes based on the illumination information.

An assessment system includes a sound data acquiring unit configured to acquire sound data collected by a sound insulation device at a predetermined assessment location, the sound insulation device being fit into a wearer's ears; and a noise map generator configured to generate a noise map representing a distribution of a sound pressure level at the predetermined assessment location, based on the sound data acquired by the sound data acquiring unit and position information associated with the sound data.

An assessment system includes a sound data acquiring unit configured to acquire sound data collected by a sound insulation device at a predetermined assessment location, the sound insulation device being fit into a wearer's ears; and a noise map generator configured to generate a noise map representing a distribution of a sound pressure level at the predetermined assessment location, based on the sound data acquired by the sound data acquiring unit and position information associated with the sound data.

To provide an audio output apparatus capable of instantly providing sound to a given listener through high-quality binaural reproduction. An audio output apparatus is configured to be wearable on a listener and includes a pair of output units and an imaging unit. The pair of output units is configured to be capable of outputting audio output signals generated using a head-related transfer function to both ears of the listener in a wearing state in which the audio output apparatus is worn, respectively. The imaging unit is provided in at least one of the pair of output units and is configured to be capable of generating an image by imaging the ears of the listener in the wearing state, the image being used for calculating the head-related transfer function. In this configuration, by using the imaging unit in the pair of output units, the image of the listener's ears to be used for calculating the head-related transfer function can be generated after the listener wears the audio output apparatus. Therefore, this audio output apparatus can instantly provide sound through high-quality binaural reproduction to a given listener.

A processing device according to this embodiment includes: a measurement signal output unit configured to output a frequency sweep signal whose frequency is swept as a measurement signal; a sound pickup signal acquisition unit configured to acquire L-ch and R-ch sound pickup signals obtained by picking up the measurement signal by a left microphone and a right microphone; an evaluation signal acquisition unit configured to calculate an evaluation signal in a time domain in accordance with the L-ch and R-ch sound pickup signals; an extraction unit configured to extract a partial section of the evaluation signal as an extraction section; a comparison unit configured to compare the L-ch sound pickup signal with the R-ch sound pickup signal using the evaluation signal in the extraction section; and a determination unit configured to determine whether the fit of the right and left microphones or the output unit is good or not based on the results of the comparison made in the comparison unit.

Provided are acoustic obstruction prevention equipment for preventing acoustic obstruction by appropriately designing a surface structure of elemental surfaces that surround a space or a surface structure of an acoustic diffuser, and a design method thereof.

A plurality of elemental surfaces that form wall surfaces, a ceiling surface, or a floor surface which surround a space are provided. An angle mutually formed by the elemental surfaces is nα (n is a natural number), and acoustic obstruction is prevented by reflection between the elemental surfaces. φ=(1+sqrt(5))/2, α=360°*1/(1+φ). This technique may be used for a plurality of other elemental surfaces that form an acoustic diffuser disposed in a space. Furthermore, the acoustic diffuser may also be formed by rotating and disposing a plurality of units at the above-described angle multiple times.