Nec Corporation

Other

Nec Platforms, Ltd.

Nec C Orporation

Takayuki Arakawa

Takafumi Koshinaka

Masanori Tsujikawa

Daisuke Tanaka

Masahiro Saikou

Ken Hanazawa

Koji Okabe

Yoshitaka Ito

Akihiko Sugiyama

Seiya Osada

Yuzo Senda

Toshiyuki Nomura

Kyota Higa

Ryoji Miyahara

Hitoshi Imaoka

Yasuyuki Mitsui

Kouji Oosugi

Shuji Komeiji

Hideki Irisawa

Shouhei Yano

A state estimation apparatusincludes: a generation unitconfigured to generate acoustic characteristic information indicating an acoustic characteristic using a first acoustic signal output to the ear canal and a second acoustic signal produced by the first acoustic signal echoing inside the body; and an estimation unitconfigured to estimate the state of the vocal tract and the state of the respiratory tract using the acoustic characteristic information.

State estimation apparatus, state estimation method, and computer readable recording medium

The present invention reduces the risk of user biometric information being leaked to a third party. A biometric authentication device () receives an echo signal (response signal) from a client device. The echo signal is formed as a result of an inspection signal being applied to an authentication subject by a client device, and the inspection signal being transmitted into the body or to the surface of the body of the authentication subject and changing into the echo signal. The biometric authentication device () comprises: an inspection signal generation unit () that generates the same inspection signal as the client device; a transmission characteristic calculation unit () that calculates, from the inspection signal and the echo signal, a transmission characteristic of the authentication subject; and an authentication unit () that authenticates the authentication subject by comparing a preregistered first transmission characteristic and a calculated second transmission characteristic.

Biometric authentication device, biometric authentication system, biometric authentication method and recording medium

Provided is to prevent a false determination due to an attachment condition of an apparatus that transmits and receives an acoustic signal, and perform accurate personal authentication. A personal authentication device includes: a personal authentication means that authenticates an individual by using first information at least including an acoustic characteristic calculated from an acoustic signal propagating through the head of the user, which is detected by an apparatus being attached on a head of a user for transmitting and receiving the acoustic signal, and a feature amount extracted from the acoustic characteristic; an attachment trouble rule storage means that stores an attachment trouble rule for detecting an attachment trouble with the apparatus; and an attachment trouble detection means that detects a trouble with an attachment state of the apparatus when the first information satisfies the attachment trouble rule.

Detection of attachment problem of apparatus being worn by user

To easily evaluate the performance of an earphone-type device used for otoacoustic authentication at low cost. A generation unit () generates earhole shape data indicating the three-dimensional shape of an individual's ear canal, on the basis of data on the internal structure of an individual's earhole, a center line calculation unit () calculates the center line of the ear canal, on the basis of the ear canal shape data, and a dividing unit () divides the ear canal into a plurality of layers perpendicular to the center line, and calculates, for each of the divided layers, parameters indicating the shape of the ear canal.

Device, method, and program for determining parameter indicating shape of ear canal based on layers perpendicular to calculated center line of ear canal

Provided is a personal authentication device capable of simply securing security with little psychological and physical burden of a user to be authenticated. Personal authentication device includes: transmission unit that transmits a first acoustic signal to a user's head; observation unit that observes a second acoustic signal after the first acoustic signal propagation; calculation unit that calculates acoustic characteristics from the first and the second acoustic signal; extraction unit that extracts a feature amount related to a user from the acoustic characteristics; storage control unit that registers the feature amount in the storage unit; identification unit that identifies the user by collating the first feature amount with a second feature amount; and storage unit stores the first feature amount, wherein while identification unit identifies the user as being identical, transmission unit transmits the first acoustic signal every predetermined interval.

Personal authentication device based on echo sounds, personal authentication method, and recording medium

Provided is a personal authentication device capable of simply securing security with little psychological and physical burden of a user to be authenticated. Personal authentication device includes: storage that stores first and second identification information for identifying a user; analysis unit that analyzes information inputted to a user and generates the first identification information; transmission unit that transmits a first acoustic signal to a part of a user's head; observation unit that observes a second acoustic signal; calculation unit that calculates acoustic characteristics from the first and the second acoustic signal; extraction unit that extracts an acoustic feature amount from the acoustic characteristics as second identification information; and determination unit that determines the user to be identical when first identification information registered and the first identification information generated coincide with each other and second identification information registered and the second identification information extracted coincide with each other.

Acoustic personal authentication device, personal authentication method, and recording medium

Provided is an information processing device including a wearing determination unit configured to determine whether or not a user wears a wearable device that emits a sound wave to perform a biometric authentication based on acoustic characteristics toward a part of a head of the user and an operation mode controlling unit configured to switch, based on a result of a determination by the wearing determination unit, an operation mode of the wearable device between a plurality of operation modes including a first operation mode in which a process for the biometric authentication is not executable and a second operation mode in which a process for the biometric authentication is executable.

Information processing device, wearable device, information processing method, and storage medium

Provided is a first acoustic information acquisition unit configured to acquire a first acoustic information obtained by receiving a sound wave emitted from a first sound source by a wearable device worn by a user, a second acoustic information acquisition unit configured to acquire a second acoustic information obtained by receiving a sound wave emitted from a second sound source that is different from the first sound source by the wearable device, and a third acoustic information acquisition unit configured to acquire a third acoustic information used for biometric matching of the user based on the first acoustic information and the second acoustic information.

[Problem] To evaluate, easily and at low cost, the performance of an earphone device used for ear acoustic certification. [Solution] Holes are provided in a plurality of plate-shaped members (), an artificial eardrum member () corresponds to the eardrum of an individual, and the holes provided in each of the plurality of plate-shaped members () are connected, whereby the plurality of plate-shaped members () are layered over the artificial eardrum member () so as to simulate the external auditory canal of the individual.

Ear model, performance evaluation method, and performance evaluation system

Provided is an information processing device including an acoustic information acquisition unit configured to acquire an acoustic information about a resonance in a body of a user wearing a wearable device and a wearing determination unit configured to determine whether or not the user wears the wearable device based on the acoustic information.

Provided is an information processing device including: an inspection signal generation unit configured to generate an inspection signal for emitting an inspection sound toward an ear canal of a subject; a first acoustic information acquisition unit configured to acquire a first acoustic information including information about an echo sound of the inspection sound; and a heartbeat information acquisition unit configured to acquire a heartbeat information about a heartbeat of the subject based on the first acoustic information.

An emotion estimation apparatusincludes: a generation unitconfigured to generate acoustic characteristic information indicating an acoustic characteristic using a first acoustic signal output to the ear canal and a second acoustic signal produced by the first acoustic signal echoing inside the body; and an estimation unitconfigured to estimate emotion using the acoustic characteristic information.

Growing community of inventors

Tokyo, Japan

Takayuki Arakawa