BIOLOGICAL SOUND ANALYZING APPARATUS, BIOLOGICAL SOUND ANALYZING METHOD, COMPUTER PROGRAM, AND RECORDING MEDIUM

• US 20170135670A1
• Filed: 03/28/2014
• Published: 05/18/2017
• Est. Priority Date: 03/28/2014
• Status: Active Grant

• Current Assignee: Air Water Biodesign Inc.
• Original Assignee: Pioneer Corporation
• Inventors: OHKUBO, Hideyuki, HASEBE, Tsuyoshi, KAMETANI, Ryushin, ISHITOYA, Koichi, MIURA, Tomohiro
• Granted Patent: US 10,441,243 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 5/08 Detecting, measuring or recording devices for evaluating the respiratory organs A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/7257 using Fourier transforms
• CPC Class Codes: A61B 5/7264 Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems neural networks per se G06N3/00; expert systems per se G06N5/00
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence
• CPC Class Codes: A61B 5/7405 using sound
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61B 7/003 Detecting lung or respiration noise
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems

Abstract

A body sound analysis device includes: acquisition means (210, 220) that acquires information relating to a frequency corresponding to a prescribed feature of a spectrum of a body sound; shifting means (230) that shifts, according to the information relating to the frequency, a plurality of reference spectrums that are references for classifying body sounds, and acquires a frequency shift reference spectrum; and output means (240, 250) that outputs a ratio of a plurality of reference spectrums included in the body sounds on the basis of the body sounds and the frequency shift reference spectrum. According to this body sound analysis device, a plurality of types of sounds included in the body sounds can be favorably analyzed.

Claims

1. A biological sound analyzing apparatus comprising:

an obtaining device configured to obtain information regarding frequency corresponding to predetermined characteristics of a spectrum of biological sounds;

a shifting device configured to shift a plurality of reference spectrums, which are references for classifying the biological sounds, in accordance with the information regarding the frequency, and configured to obtain frequency-shifted reference spectrums; and

an outputting device configured to output a ratio of each of the plurality of reference spectrums included in the biological sounds on the basis of the biological sounds and the frequency-shifted reference spectrums.

2. The biological sound analyzing apparatus according to claim 1, wherein the biological sounds are breath sounds.

3. The biological sound analyzing apparatus according to claim 2, wherein the plurality of reference spectrums include reference spectrums corresponding to adventitious sounds.

5. The biological sound analyzing apparatus according to claim 1, wherein said outputting device uses non-negative approximation to calculate the ratio of each of the plurality of reference spectrums.

6. The biological sound analyzing apparatus according to claim 1, further comprising a separating device configured to separate and output the spectrum of the biological sounds into a plurality of spectrums corresponding to the plurality of reference spectrums.

11. The biological sound analyzing apparatus according to claim 2, wherein said outputting device uses non-negative approximation to calculate the ratio of each of the plurality of reference spectrums.

12. The biological sound analyzing apparatus according to claim 3, wherein said outputting device uses non-negative approximation to calculate the ratio of each of the plurality of reference spectrums.

13. The biological sound analyzing apparatus according to claim 2, further comprising a separating device configured to separate and output the spectrum of the biological sounds into a plurality of spectrums corresponding to the plurality of reference spectrums.

14. The biological sound analyzing apparatus according to claim 3, further comprising a separating device configured to separate and output the spectrum of the biological sounds into a plurality of spectrums corresponding to the plurality of reference spectrums.

4. (canceled)

7. A biological sound analyzing method comprising:

an obtaining process of obtaining information regarding frequency corresponding to predetermined characteristics of a spectrum of biological sounds;

a shifting process of shifting a plurality of reference spectrums, which are references for classifying the biological sounds, in accordance with the information regarding the frequency, and obtaining frequency-shifted reference spectrums; and

an outputting process of outputting a ratio of each of the plurality of reference spectrums included in the biological sounds on the basis of the biological sounds and the frequency-shifted reference spectrums.

8. A non-transitory computer-readable medium on which is stored a program that, upon execution, causes a computer to perform steps of:

an obtaining process of obtaining information regarding frequency corresponding to predetermined characteristics of a spectrum of biological sounds;

a shifting process of shifting a plurality of reference spectrums, which are references for classifying the biological sounds, in accordance with the information regarding the frequency, and obtaining frequency-shifted reference spectrums; and

an outputting process of outputting a ratio of each of the plurality of reference spectrums included in the biological sounds on the basis of the biological sounds and the frequency-shifted reference spectrums.

9. (canceled)

10. A biological sound analyzing apparatus comprising:

an obtaining device configured to obtain output signals of a biological sound sensor; and

an outputting device configured to output a ratio of each of a plurality of reference spectrums included in the output signals of the biological sound sensor, on the basis of the reference spectrums respectively corresponding to a plurality of sound types included in biological sounds and on the basis of the output signals of the biological sound sensor.