# US 10,441,243 B2 · Biological sound analyzing apparatus, biological sound analyzing method, computer program, and recording medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,243 B2 - Document ID: US10441243B2 - Status: Granted - Kind: B2 - Application number: 15/129,940 - Filed: 2014-03-28 - Published: 2017-05-18 - Granted: 2019-10-15 - Earliest claimed: 2014-03-28 - Assignees: Pioneer Corporation - Applicants: Pioneer Corporation - Inventors: Ryushin Kametani; Koichi Ishitoya; Tomohiro Miura; Hideyuki Ohkubo; Tsuyoshi Hasebe - Web page: https://patentgrep.com/patent/US10441243B2 ## CPC - A61B 7/003: {Detecting lung or respiration noise} - A61B 5/08: Measuring devices for evaluating the respiratory organs - A61B 5/7257: {using Fourier transforms} - A61B 5/7264: {Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems} - A61B 5/7282: {Event detection, e.g. detecting unique waveforms indicative of a medical condition (cough events A61B5/0823; seizures A61B5/4094; sleep apnoea A61B5/4818)} - A61B 5/7405: {using sound} - A61B 5/742: {using visual displays (displays for heart-related electrical signals, e.g. ECG, A61B5/339)} - G16H 50/20: for computer-aided diagnosis, e.g. based on medical expert systems - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA ## 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 ### Claim 1 A biological sound analyzing apparatus comprising: a biological sound sensor that obtains signals of biological sounds; a frequency analyzer operatively connected to an output of the biological sound sensor and configured to obtain information regarding frequency corresponding to predetermined characteristics of a spectrum of biological sounds based on the signals of biological sounds obtained by the biological sound sensor; a shifter operatively connected to an output of the frequency analyzer and configured to shift a plurality of reference spectrums, which reference spectrums are references for classifying the biological sounds contained in the spectrum of biological sounds, the shifting being in accordance with the information regarding the frequency corresponding to predetermined characteristics of the spectrum of biological sounds, and configured to thereby obtain frequency-shifted reference spectrums; a calculator that calculates a ratio of each of a plurality of reference spectrums included in the spectrum of biological sounds based on the spectrum of the biological sounds as obtained from the frequency analyzer and the frequency-shifted reference spectrums; and an output device configured to output the calculated ratio of each of the plurality of reference spectrums. ### Claim 2 (depends on 1) The biological sound analyzing apparatus according to claim 1, wherein the biological sounds are breath sounds. ### Claim 3 (depends on 2) 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. ### Claim 4 (depends on 2) The biological sound analyzing apparatus according to claim 2, further comprising a sound separator configured to separate the spectrum of the biological sounds into a plurality of spectrums, each of the plurality of spectrums respectively corresponding to the plurality of reference spectrums. ### Claim 5 (depends on 2) The biological sound analyzing apparatus according to claim 2, wherein the plurality of reference spectrums include reference spectrums corresponding to adventitious sounds. ### Claim 6 (depends on 5) The biological sound analyzing apparatus according to claim 5, wherein said outputting device uses non-negative approximation to calculate the ratio of each of the plurality of reference spectrums. ### Claim 7 (depends on 5) The biological sound analyzing apparatus according to claim 5, further comprising a sound separator configured to separate the spectrum of the biological sounds into a plurality of spectrums, each of the plurality of spectrums respectively corresponding to the plurality of reference spectrums. ### Claim 8 (depends on 1) 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. ### Claim 9 (depends on 1) The biological sound analyzing apparatus according to claim 1, further comprising a sound separator configured to separate the spectrum of the biological sounds into a plurality of image data spectrums, each of the plurality of image data spectrums respectively corresponding to one of the plurality of reference spectrums. ### Claim 10 A biological sound analyzing method comprising steps of: obtaining a spectrum of biological sounds; obtaining information regarding frequency corresponding to predetermined characteristics of the obtained spectrum of biological sounds; shifting a plurality of reference spectrums, which reference spectrums are references for classifying the biological sounds contained in the spectrum of biological sounds, the shifting being in accordance with the information regarding the frequency corresponding to predetermined characteristics of the spectrum of biological sounds, and thereby obtaining frequency-shifted reference spectrums; calculating a ratio of each of a plurality of reference spectrums included in the spectrum of biological sounds based on the obtained spectrum of the biological sounds and the frequency-shifted reference spectrums; and outputting the calculated ratio of each of the plurality of reference spectrums. ### Claim 11 A non-transitory computer-readable medium on which is stored a program that, upon execution, causes a computer to perform steps of: obtaining a spectrum of biological sounds; obtaining information regarding frequency corresponding to predetermined characteristics of the obtained spectrum of biological sounds; shifting a plurality of reference spectrums, which reference spectrums are references for classifying the biological sounds contained in the spectrum of biological sounds, the shifting being in accordance with the information regarding the frequency corresponding to predetermined characteristics of the spectrum of biological sounds, and thereby and obtaining frequency-shifted reference spectrums; calculating a ratio of each of a plurality of reference spectrums included in the spectrum of biological sounds based on the obtained spectrum of the biological sounds and the frequency-shifted reference spectrums; and outputting the calculated ratio of each of the plurality of reference spectrums.