-
公开(公告)号：US11297427B2
公开(公告)日：2022-04-05
申请号：US17016674
申请日：2020-09-10
Applicant: JVCKENWOOD CORPORATION
Inventor： Yumi Fujii , Hisako Murata , Masaya Konishi , Takahiro Gejo , Kuniaki Takachi
Abstract: A processing device according to an embodiment includes a sound pickup signal acquisition unit that acquires sound pickup signals picked up by left and right microphones through a monophonic input terminal, a switch unit that switches a connection state so that a first sound pickup signal picked up only by the left microphone and a second sound pickup signal picked up only by the right microphone are input, an interaural distance acquisition unit that acquires an interaural distance of the listener, a front time difference acquisition unit that acquires a front time difference, an incident time difference calculation unit that calculates an incident time difference based on an angle θ, the front time difference, and the interaural distance, and a transfer characteristics generation unit that calculates transfer characteristics by applying a delay corresponding to the incident time difference to the first and second sound pickup signals.
-
公开(公告)号：US11051118B2
公开(公告)日：2021-06-29
申请号：US16538601
申请日：2019-08-12
Applicant: JVCKENWOOD Corporation
Inventor： Hiroshi Uchida , Hisako Murata , Takahiro Gejo , Yumi Fujii , Kuniaki Takachi , Masaya Konishi , Takayuki Uchida , Satoshi Yoshimura , Shuji Tanifuji
Abstract: A sound pickup device according to this embodiment includes a microphone part placed at a sound pickup position in close proximity to an ear hole without blocking an ear canal, and positioned so as to face outside of the ear canal, and a wire having flexibility and extending to the sound pickup position. Further, in this embodiment, at least part of the wire is formed along an auricle.
-
公开(公告)号：US11997468B2
公开(公告)日：2024-05-28
申请号：US17400672
申请日：2021-08-12
Applicant: JVCKENWOOD Corporation
Inventor： Takahiro Gejo , Hisako Murata , Masaya Konishi , Yumi Fujii , Kuniaki Takachi , Toshiaki Nagai
CPC classification number: H04S1/005 , H04R5/02 , H04R5/04 , H04S2400/01 , H04S2420/01
Abstract: An object of the present invention is to provide a processing device, a processing method, a reproducing method, and a program capable of performing appropriate processing.
A processing device according to the present embodiment includes: an envelope computation unit computing an envelope for a frequency response of a sound pickup signal; a scale conversion unit generating scale converted data by performing scale conversion and data interpolation on frequency data of the envelope; a normalization factor computation unit dividing the scale converted data into a plurality of frequency bands, obtaining a characteristic value for each frequency band, and computing a normalization factor, based on the characteristic values; and a normalization unit, using the normalization factor, normalizing the sound pickup signal in the time domain.-
公开(公告)号：US20230114777A1
公开(公告)日：2023-04-13
申请号：US17939883
申请日：2022-09-07
Applicant: JVCKENWOOD Corporation
Inventor： Hisako MURATA , Takahiro Gejo , Yumi Fujii , Masaya Konishi
Abstract: An object of the present disclosure is to provide a filter generation device and a filter generation method, capable of generating a filter suitable for out-of-head localization processing. A processing device according to an embodiment includes: a frequency characteristics acquisition unit configured to acquire frequency characteristics based on sound pickup signals; a level calculation unit configured to calculate a reference level in the frequency characteristics; a correction unit configured to correct the frequency characteristics so that the frequency characteristics fall within a predetermined level range including the reference level, and thereby calculate corrected characteristics; and a filter generation unit configured to generate a corrected filter based on the corrected characteristics.
-
公开(公告)号：US11470422B2
公开(公告)日：2022-10-11
申请号：US17372365
申请日：2021-07-09
Applicant: JVCKENWOOD Corporation
Inventor： Yumi Fujii , Hisako Murata , Kuniaki Takachi , Takahiro Gejo , Mayo Iiyama
Abstract: An out-of-head localization filter determination system according to this embodiment includes a microphone unit that is worn on a user's ear and picks up sounds output from an output unit, a measurement unit that measures a sound pickup signal output from the microphone unit, a data storage unit that stores first preset data related to spatial acoustic transfer characteristics and second preset data related to ear canal transfer characteristics in association with each other, a frequency characteristics acquisition unit that converts the sound pickup signal into a frequency domain and acquires frequency characteristics, an extreme value extraction unit that extracts a local maximum value and a local minimum value of the frequency characteristics, and an envelope calculation unit that calculates first envelope data and second envelope data by interpolating each of the local maximum value and the local minimum value.
-
Patent Agency Ranking
公开(公告)号：US12137318B2
公开(公告)日：2024-11-05
申请号：US17859249
申请日：2022-07-07
Applicant: JVCKENWOOD Corporation
Inventor： Yumi Fujii , Takahiro Gejo , Hisako Murata
Abstract: A processing device according to this embodiment includes: a frequency characteristics acquisition unit configured to acquire frequency characteristics of an input signal; an extreme value extraction unit configured to extract an extreme value of spectral data; a kurtosis calculation unit configured to: calculate an evaluation value from spectral data; and calculate a kurtosis of a peak or a dip based on a plurality of evaluation values calculated by changing a calculation width, the evaluation value being used for evaluating the peak or the dip corresponding to the extreme value; a determination unit configured to determine whether to suppress the peak or the dip according to a comparison result between the kurtosis and a threshold value; and a suppression unit configured to suppress the peak or the dip with the extreme value that is determined to be suppressed.
-
公开(公告)号：US10805727B2
公开(公告)日：2020-10-13
申请号：US16549928
申请日：2019-08-23
Applicant: JVCKENWOOD Corporation
Inventor： Hisako Murata , Takahiro Gejo , Yumi Fujii , Kuniaki Takachi , Masaya Konishi
Abstract: A processor of a filter generation device according to an embodiment includes an extraction unit that extracts a first signal having a first number of samples from samples preceding a boundary sample of a sound pickup signal, a signal generation unit that generates a second signal containing a direct sound from a sound source and having a second number of samples larger than the first number of samples based on the first signal, a transform unit that transforms the second signal into a frequency domain and generates a spectrum, a correction unit that increases a value of the spectrum in a correction band and generates a corrected spectrum, an inverse transform unit that inversely transforms the corrected spectrum into a time domain and generates a corrected signal, and a generation unit that generates a filter based on the sound pickup signal and the corrected signal.
-
公开(公告)号：US10779107B2
公开(公告)日：2020-09-15
申请号：US16545909
申请日：2019-08-20
Applicant: JVCKENWOOD Corporation
Inventor： Yumi Fujii , Hisako Murata , Takahiro Gejo
Abstract: An out-of-head localization device according to this embodiment includes an adder that calculates a common-mode signal of stereo reproduced signals, a ratio setting unit that sets a subtraction ratio for subtracting the common-mode signal, a subtraction unit that subtracts the common-mode signal from the stereo reproduced signals at the subtraction ratio and thereby generates corrected signals, a convolution calculation unit that performs convolution on the corrected signals by using spatial acoustic transfer characteristics and thereby generates a convolution calculation signal, a filter unit that performs filtering on the convolution calculation signal by using a filter and thereby generates an output signal, and headphones that output the output signal to a user.
-
公开(公告)号：US10687144B2
公开(公告)日：2020-06-16
申请号：US16540857
申请日：2019-08-14
Applicant: JVCKENWOOD Corporation
Inventor： Takahiro Gejo , Hisako Murata , Yumi Fujii
Abstract: A processor of a filter generation device according to this embodiment includes a first synchronous addition unit that generates a first synchronous addition signal, a second synchronous addition unit that performs synchronous addition of sound pickup signals acquired with a microphone worn on an object or a person other than a listener with a second number of synchronous additions larger than a first number of synchronous additions and thereby generates a second synchronous addition signal, a first transform unit that transforms the first and second synchronous addition signals into frequency domain data so as to acquire first and second spectrums corresponding to the first and second synchronous addition signals, a first correction unit that corrects data of a first spectrum in a correction band and thereby generates a third spectrum, and a first inverse transform unit that inversely transforms the third spectrum into time domain data.
-
公开(公告)号：US12170884B2
公开(公告)日：2024-12-17
申请号：US17859430
申请日：2022-07-07
Applicant: JVCKENWOOD Corporation
Inventor： Yumi Fujii , Hisako Murata , Takahiro Gejo , Kuniaki Takachi
Abstract: A processing device according to an embodiment includes: a frequency characteristics acquisition unit configured to acquire frequency characteristics of at least one sound pickup signal; a smoothing processing unit configured to perform smoothing processing so as to generate second spectral data smoother than first spectral data based on the frequency characteristics; a first compression unit configured to calculate a first difference value corresponding to a difference between the second spectral data and the first spectral data in a first band, and to compress the second spectral data based on the first difference value; and a filter generation unit configured to generate a filter, based on the second spectral data.
-
-
-
-
-
-
-
-
-
Search Results
18
records
(took 0.012 seconds)
