公开(公告)号：US20230293103A1

公开(公告)日：2023-09-21

申请号：US18021017

申请日：2020-08-25

申请人： NEC Corporation

发明人： Masao Higuchi ,  Mitsuru Noma ,  Reishi Kondo ,  Yumi Arai

IPC分类号： A61B5/00 ,  A61B7/00 ,  G16H50/30 ,  G16H20/10 ,  G16H15/00

CPC分类号： A61B5/4842 ,  A61B7/003 ,  G16H50/30 ,  G16H20/10 ,  G16H15/00

摘要： An analysis device includes a detection unit that detects abnormality in lung sounds for each of auscultation positions on the basis of time-series acoustic signals including lung sounds of each of the auscultation positions; a determination unit that determines severity of heart failure of a patient on the basis of a detection result of abnormality in the lung sounds of each of the auscultation positions detected by the detection unit and condition information representing the condition of the patient; and a decision unit that decides an instruction to be output to the patient on the basis of a result of the determination by the determination unit.

公开(公告)号：US11620985B2

公开(公告)日：2023-04-04

申请号：US17054646

申请日：2018-05-15

申请人： NEC Corporation

发明人： Tatsuya Komatsu ,  Reishi Kondo

IPC分类号： G10L15/06 ,  G10L15/02

摘要： A pattern recognition apparatus includes: a model storage part that stores a model(s) generated by using transfer path information indicating a difference of transfer paths of a signal(s) for training, additional to the signal(s) for training, and a pattern recognition part that inputs an input signal and transfer path information indicating a difference of transfer paths of the input signal, and performs pattern recognition of the input signal by using the model(s).

公开(公告)号：US11408963B2

公开(公告)日：2022-08-09

申请号：US17252405

申请日：2018-06-25

申请人： NEC Corporation

发明人： Yumi Arai ,  Reishi Kondo ,  Yuzo Senda

IPC分类号： G01S3/808 ,  G10L25/06 ,  G10L25/18 ,  H04R1/40 ,  H04R3/00

摘要： A wave-source-direction estimation device includes: a plurality of input units that acquires, as input signals, electrical signals based on waves detected by a plurality of sensors; a signal selection unit that selects a plurality of pairs that are each a combination of two input signals from among a plurality of the input signals; a relative delay time calculation unit that calculates, as relative delay times, arrival time differences of the waves at the sensors that are supply sources of the two input signals composing each of the pairs, for each wave source direction; and an integrated-estimated-direction-information calculation unit that generates per-frequency estimated direction information for each of the pairs using the input signals composing each of the pairs and the relative delay times of each of the pairs and generates integrated estimated direction information by assigning a weight to and integrating the estimated direction information on all the pairs.

公开(公告)号：US11200882B2

公开(公告)日：2021-12-14

申请号：US16625897

申请日：2017-07-03

申请人： NEC Corporation

发明人： Tatsuya Komatsu ,  Reishi Kondo

IPC分类号： G10L15/00 ,  G10L15/04 ,  G10L15/02

摘要： A signal processing device according to an exemplary aspect of the present invention includes: at least one memory storing a set of instructions; and at least one processor configured to execute the set of instructions to: extract, from a target signal, a feature value representing a feature of the target signal; calculate, based on the extracted feature value, signal element bases capable of representing a plurality of object signals by linear combination, and information of the linear combination, weights each representing intensities of the plurality of object signals included in the target signal; derive, based on the weights, information of a target object signal included in the target signal, the target object signal being at least one type of the plurality of object signals; and output information of the target object signal.

公开(公告)号：US11996077B2

公开(公告)日：2024-05-28

申请号：US17632940

申请日：2019-08-08

申请人： NEC Corporation

发明人： Sakiko Mishima ,  Reishi Kondo

IPC分类号： G10K11/178

CPC分类号： G10K11/17833

摘要： Provided is a noise estimation device capable of appropriately estimating the amount of noise in an observation signal. The noise estimation device includes: frequency analysis processing means for receiving an input of an observation signal that includes a moving object sound output from an moving object and noise and transforming the observation signal into a feature in each of time-frequency domains; noise range estimation means for estimating a first feature in a first time-frequency domain to which only the noise belongs based on acoustic characteristic information of the moving object sound and the feature; and amount-of-noise estimation means for estimating an amount of noise in a second time-frequency domain to which the moving object sound belongs based on the first feature.

公开(公告)号：US11948554B2

公开(公告)日：2024-04-02

申请号：US17276192

申请日：2018-09-20

申请人： NEC Corporation

发明人： Tatsuya Komatsu ,  Reishi Kondo ,  Sakiko Mishima

IPC分类号： G10L15/16 ,  G06N20/00 ,  G10L15/02 ,  G10L15/06 ,  G10L25/27 ,  G10L25/51

CPC分类号： G10L15/063 ,  G06N20/00 ,  G10L15/02 ,  G10L25/27 ,  G10L25/51

摘要： The acoustic feature extraction means 82 extracts an acoustic feature, using predetermined parameters, from an acoustic pattern obtained as a result of processing on an acoustic signal. The language vector calculation means 83 calculates a language vector from a given label that represents an attribute of a source of the acoustic signal and that is associated with the acoustic pattern. The similarity calculation means 84 calculates a similarity between the acoustic feature and the language vector. The parameter update means 85 learns parameters so that the similarity becomes larger, and updates the predetermined parameters to the parameters obtained by learning.

公开(公告)号：US10817719B2

公开(公告)日：2020-10-27

申请号：US16309521

申请日：2017-06-13

申请人： NEC Corporation

发明人： Tatsuya Komatsu ,  Reishi Kondo

IPC分类号： G06K9/00 ,  G10L21/0272 ,  G10L25/51 ,  G10L25/27 ,  G10L21/0308 ,  G06F17/16 ,  G10L19/06 ,  G10L25/18

摘要： A signal processing device includes: a basis storage that stores an acoustic event basis group; a model storage that stores an identification model, as a feature amount, a combination of activation levels of spectral; an identification signal analysis unit that, upon input of a spectrogram of an acoustic signal for identification, performs sound source separation on the spectrogram by using a spectral basis set that is obtained by appending spectral bases corresponding to an unknown acoustic event that is an acoustic event other than the acoustic event specified as a detection target to the acoustic event basis group and causing only unknown spectral bases within the spectral basis set to be learned, and thereby calculating activation levels of spectral bases of the acoustic events in the spectrogram of the acoustic signal for identification; and a signal identify unit that identifies an acoustic event included in the acoustic signal for identification.

公开(公告)号：US20150279373A1

公开(公告)日：2015-10-01

申请号：US14672625

申请日：2015-03-30

申请人： NEC Corporation

发明人： Ken HANAZAWA ,  Reishi Kondo

IPC分类号： G10L17/22

CPC分类号： G10L15/222 ,  G10L25/18 ,  G10L25/78

摘要： A voice response apparatus, method and non-transitory computer-readable storage medium are disclosed. The voice response apparatus may include a memory storing instructions, and one or more processors configured to process the instructions to detect an input voice from an input signal using a first frequency bandwidth, output a response voice including predetermined amount of components of a second frequency bandwidth, and set the first frequency bandwidth so that the first frequency bandwidth and the second frequency bandwidth do not overlap each other.

摘要翻译： 公开了语音应答装置，方法和非暂时计算机可读存储介质。 语音响应装置可以包括存储指令的存储器和配置成使用第一频率带宽从输入信号检测输入语音的指令的一个或多个处理器，输出包括第二频率带宽的预定量的分量的响应语音 并且设置第一频率带宽，使得第一频带宽度和第二频带宽度彼此不重叠。

公开(公告)号：US20230284998A1

公开(公告)日：2023-09-14

申请号：US18020390

申请日：2020-08-25

申请人： NEC Corporation

发明人： Masao Higuchi ,  Mitsuru Noma ,  Reishi Kondo ,  Yumi Arai

IPC分类号： A61B7/00 ,  A61B7/04 ,  A61B5/087 ,  G16H50/20

CPC分类号： A61B7/003 ,  A61B7/04 ,  A61B5/087 ,  G16H50/20

摘要： A lung sound analysis system includes an acquisition means for acquiring time-series acoustic signals including lung sounds of a subject who is a heart failure patient, a determination means for determining a pause phase of breathing of the subject, a dividing means for dividing the time-series acoustic signals into those in a period of the pause phase of the subject and those in a period other than the pause phase, according to a result of the determination, a calculation means for calculating an index value representing the quality of the time-series acoustic signals in the period other than the pause phase, from the intensity of the time-series acoustic signals in the period of the pause phase and the intensity of the time-series acoustic signals in the period other than the pause phase after the division, and a warning means for giving warning based on the calculated index value.

公开(公告)号：US11626102B2

公开(公告)日：2023-04-11

申请号：US16971091

申请日：2018-03-09

申请人： NEC Corporation

发明人： Reishi Kondo ,  Yuzo Senda

IPC分类号： G10L15/02

摘要： A signal source identification device includes: a feature value calculation unit configured to calculate feature values corresponding to paths where signals from generation sources of the signals transmit, based on signals received by a plurality of sensors; and an identification unit configured to identify whether or not a feature value calculated by the feature value calculation unit is a signal from a predetermined signal source by using an identification range that is a range within which feature values based on signals from the predetermined signal source fall and that is previously determined based on the feature values calculated by the feature value calculation unit.