Abstract: An authentication management device acquires first position information indicating a change in the position of a user's earphone equipped with a first authentication means based on otoacoustic authentication; on the basis of the acquired first position information, estimates motion of the user wearing the earphone by generating motion information indicating the motion of the user; and executes authentication of the user in a device connected to the earphone on the basis of the result of the authentication by otoacoustic authentication and the motion information.

Abstract: [Problem] To realize, by means of a simple structure, a soundproofing material having a soundproofing property equal or superior to that of a conventional one against sound including noise arising from vibration generated by a panel (dash panel) that separates the inside and outside of a vehicle cabin or an automotive component and penetrating into the vehicle cabin, and further to realize an excellent soundproofing property in a method for attaching an automotive component using the soundproofing material. [Solution] An automotive soundproofing material made of a urethane foam material, characterized in that the urethane foam material has a single-layer structure, the urethane foam material is configured to have either a uniform thickness or an increased thickness only in a region where it is needed, and an automotive component can be installed while compressing the urethane foam material.

Abstract: A reporting system determines whether an earphone is worn in one ear of a user, reports instruction information instructing the user to wear the earphone when it is determined that the earphone is not worn, and authenticates the user by otoacoustic authentication when it is determined that the earphone is worn in one ear after the instruction information is reported. The otoacoustic authentication is an authentication method that sends out a test sound in the direction of the ear canal of the one ear or other ear of the user, and authenticates the user based on the reflected sound to the test sound.

Abstract: An authentication management device acquires a result of authenticating a user by otoacoustic authentication in an earphone; stores the authentication result; after the authentication result is acquired, acquires a wearing determination result indicating whether the earphone is worn in an ear of the user on the basis of a detection result of a proximity sensor; and updates the stored authentication result when the wearing determination result indicates that the earphone is not worn in the ear.

Abstract: There is provided a voice output apparatus for providing a high-quality sound to an eardrum of a user. The voice output apparatus includes a first voice output unit outputting a voice to an ear canal of a user based on an output voice signal, a first noise acquirer arranged to face outward from a body of the user and captures a mixed voice including first external noise arriving from an outside of the user to output a mixed voice signal, an echo canceler cancelling an influence, on the first external noise, of a leaked voice output from the first voice output unit and leaking to the outside of the user, and a noise canceler generating a first external noise signal corresponding to the first external noise, and processing, using the first external noise signal, an input voice signal input from the outside to generate the output voice signal.

Abstract: By performing both noise cancellation and echo cancellation, a high-quality main voice signal is generated. A voice input/output apparatus includes a noise acquirer that is arranged toward an outside of a body of a user and acquires external noise arriving from the outside of the user, a voice output unit that accepts an input of a voice signal and outputs a voice to an ear canal of the user, a main voice acquirer that acquires a mixed voice, in which the external noise, the output voice, and a main voice of the user transmitted from a vocal cord of the user through the ear canal are mixed, and outputs a mixed voice signal, a noise canceler that processes the mixed voice signal using a noise signal based on the external noise, and an echo canceler that processes the mixed voice signal using the voice signal.

Abstract: This invention provides a signal processing apparatus capable of obtaining an output signal of sufficiently high quality if the phase of an input signal is largely different from the phase of a true voice. The signal processing apparatus includes a voice detector that receives a mixed signal including a voice and a signal other than the voice and obtains existence of the voice as a voice flag, a corrector that receives the mixed signal and the voice flag and obtains a corrected mixed signal generated by correcting the mixed signal in accordance with a state of the voice flag, and a shaper that receives the corrected mixed signal and shapes the corrected mixed signal.

Abstract: By performing both noise cancellation and echo cancellation, a high-quality main voice signal is generated. A voice input/output apparatus includes a noise acquirer that is arranged toward an outside of a body of a user and acquires external noise arriving from the outside of the user, a voice output unit that accepts an input of a voice signal and outputs a voice to an ear canal of the user, a main voice acquirer that acquires a mixed voice, in which the external noise, the output voice, and a main voice of the user transmitted from a vocal cord of the user through the ear canal are mixed, and outputs a mixed voice signal, a noise canceler that processes the mixed voice signal using a noise signal based on the external noise, and an echo canceler that processes the mixed voice signal using the voice signal.

Abstract: There is provided a voice output apparatus for providing a high-quality sound to an eardrum of a user. The voice output apparatus includes a first voice output unit outputting a voice to an ear canal of a user based on an output voice signal, a first noise acquirer arranged to face outward from a body of the user and captures a mixed voice including first external noise arriving from an outside of the user to output a mixed voice signal, an echo canceler cancelling an influence, on the first external noise, of a leaked voice output from the first voice output unit and leaking to the outside of the user, and a noise canceler generating a first external noise signal corresponding to the first external noise, and processing, using the first external noise signal, an input voice signal input from the outside to generate the output voice signal.

Abstract: By performing both noise cancellation and echo cancellation, a high-quality main voice signal is generated. A voice input/output apparatus includes a noise acquirer that is arranged toward an outside of a body of a user and acquires external noise arriving from the outside of the user, a voice output unit that accepts an input of a voice signal and outputs a voice to an ear canal of the user, a main voice acquirer that acquires a mixed voice, in which the external noise, the output voice, and a main voice of the user transmitted from a vocal cord of the user through the ear canal are mixed, and outputs a mixed voice signal, a noise canceler that processes the mixed voice signal using a noise signal based on the external noise, and an echo canceler that processes the mixed voice signal using the voice signal.

Abstract: This invention provides a signal processing apparatus capable of obtaining an output signal of sufficiently high quality if the phase of an input signal is largely different from the phase of a true voice. The signal processing apparatus includes a voice detector that receives a mixed signal including a voice and a signal other than the voice and obtains existence of the voice as a voice flag, a corrector that receives the mixed signal and the voice flag and obtains a corrected mixed signal generated by correcting the mixed signal in accordance with a state of the voice flag, and a shaper that receives the corrected mixed signal and shapes the corrected mixed signal.

Abstract: There is provided a signal processing apparatus that obtains a speech signal with sufficiently reduced wind noise.

Abstract: This invention provides a signal processing apparatus for receiving a mixed signal including at least one target signal and outputting a desired composite signal. The signal processing apparatus includes a storage unit that stores an acoustic signal, and a signal processor that receives a mixed signal including at least one target signal, and composites the acoustic signal stored in a storage unit with the at least one target signal.

Abstract: There is provided a signal processing apparatus for amplifying or attenuating, with respect to a signal in which a desired signal and another signal are mixed, the desired signal and the other signal at different ratios. The signal processing apparatus includes a separator that obtains an estimated first signal and an estimated second signal by receiving a mixed signal in which a first signal (for example, speech) and a second signal (for example, noise) are mixed and estimating the first signal and the second signal. Furthermore, the signal processing apparatus includes a gain adjuster that obtains a gain-adjusted mixed signal by receiving the estimated first signal and the estimated second signal.

Abstract: A wideband signal is enhanced or suppressed to the same extent at each frequency without increasing the size of an overall sensor array. To achieve this, there is provided a signal processing apparatus including a direction estimator that obtains a direction of arrival of a signal for signals received from a plurality of sensors and each containing a target signal and noise, a first gain calculator that calculates a first gain using the direction of arrival of the signal, an integrator that obtains an integrated signal by integrating the signals received from the plurality of sensors, and a multiplier that multiplies the first gain by the integrated signal.

Abstract: A wideband signal is enhanced or suppressed to the same extent at each frequency without increasing the size of an overall sensor array. To achieve this, there is provided a signal processing apparatus including a direction estimator that obtains a direction of arrival of a signal for signals received from a plurality of sensors and each containing a target signal and noise, a first gain calculator that calculates a first gain using the direction of arrival of the signal, an integrator that obtains an integrated signal by integrating the signals received from the plurality of sensors, and a multiplier that multiplies the first gain by the integrated signal.

Abstract: A signal processing apparatus for effectively detecting an abrupt change in a signal, in particular, an abrupt change different from an ideal pulse includes a converter that converts an input signal into a phase component signal in a frequency domain, a first calculator that calculates a phase gradient for each of a plurality of frequencies of the phase component signal as a first phase gradient, a weighting unit that weights the first phase gradient with an amplitude or a power of the input signal, thereby calculating a weighted first phase gradient, a second calculator that calculates a second phase gradient based on the weighted first phase gradient, and a determiner that determines presence of an abrupt change in the input signal based on the first phase gradient and the second phase gradient.

Abstract: There is provided a signal processing apparatus for amplifying or attenuating, with respect to a signal in which a desired signal and another signal are mixed, the desired signal and the other signal at different ratios. The signal processing apparatus includes a separator that obtains an estimated first signal and an estimated second signal by receiving a mixed signal in which a first signal (for example, speech) and a second signal (for example, noise) are mixed and estimating the first signal and the second signal. Furthermore, the signal processing apparatus includes a gain adjuster that obtains a gain-adjusted mixed signal by receiving the estimated first signal and the estimated second signal.

Abstract: There is provided a signal processing apparatus that obtains a speech signal with sufficiently reduced wind noise.

Abstract: There is proposed a signal processing apparatus for enhancing a target signal and suppressing the remaining components without increasing an array size or the number of sensors. This signal processing apparatus includes a first array processor that generates a first array processing signal by enhancing a predetermined signal among signals received from a plurality of sensors, and a decorrelator that generates a decorrelated signal by removing, from the first array processing signal, a signal component correlated with a signal received from an auxiliary sensor different from the plurality of sensors.