MACHINE LEARNING APPARATUS, ANALYSIS APPARATUS, MACHINE LEARNING METHOD, AND ANALYSIS METHOD

Title:

MACHINE LEARNING APPARATUS, ANALYSIS APPARATUS, MACHINE LEARNING METHOD, AND ANALYSIS METHOD

Document Type and Number:

WIPO Patent Application WO/2019/216320

Kind Code:

A1

Abstract:

In the present invention, a biological sound is accurately extracted from noisy acoustic data. A machine learning apparatus (1) is for learning a predictive algorithm (D2) for predicting whether a biological sound is included in acoustic data. The machine learning apparatus (1) is provided with: an acoustic data acquisition unit (121) that acquires the acoustic data obtained from a subject by a sound collection device (4); a biological sound determination unit (123) that determines whether or not the biological sound is included in the acoustic data, in accordance with a user's operation; a feature amount extraction unit (124) that extracts a feature amount in the acoustic data; and a learning unit (13) that learns the predictive algorithm on the basis of the feature amount and a result of determination by the biological sound determination unit (123). The feature amount includes at least any one of PNCC, MFCC, ΔPNCC, ΔΔPNCC, ΔMFCC, ΔΔMFCC, BSF, a feature related to a formant, a feature related to a pitch, an LPC coefficient, spectrum flatness, logarithmic energy, a duration time period of a sound segment, ZCR, an index based on entropy, and the statistics thereof.

More Like This:

JP2023524595	Transcutaneous sound sensor
JP7073879	Biological sound measurement device, biological sound measurement support method, biological sound measurement support program
JP2015031889	ACOUSTIC SIGNAL SEPARATION DEVICE, ACOUSTIC SIGNAL SEPARATION METHOD, AND ACOUSTIC SIGNAL SEPARATION PROGRAM

Inventors:

EMOTO TAKAHIRO (JP)
GOJIMA YUKI (JP)
SATO RYUNOSUKE (JP)
AKUTAGAWA MASATAKE (JP)

Application Number:

PCT/JP2019/018287

Publication Date:

November 14, 2019

Filing Date:

May 07, 2019

Export Citation:

Click for automatic bibliography generation Help

Assignee:

UNIV TOKUSHIMA (JP)

International Classes:

A61B7/04; A61B10/00; G10L25/15; G10L25/18; G10L25/24

Domestic Patent References:

WO2017135127A1

2017-08-10

Foreign References:

JP2015514456A	2015-05-21
US20170301347A1	2017-10-19

Other References:

SATO, R. ET AL.: "Automatic Bowel Motility Evaluation Technique for Noncontact Sound Recordings", APPLIED SCIENCES, vol. 8, no. 999, 19 June 2018 (2018-06-19), pages 1 - 9, XP055651526

Attorney, Agent or Firm:

SAEGUSA & PARTNERS (JP)

Download PDF:

View/Download PDF PDF Help

Previous Patent: CUTTING INSERT, CUTTING TOOL, AND METHOD FOR MANUFACTURING CUT WORKPIECE

Next Patent: PHOTOREACTIVE COMPOSITION, REACTION PRODUCT, AND METHOD FOR PRODUCING REACTION PRODUCT