Application US20200289082

ASSESSING JOINT CONDITION USING ACOUSTIC SENSORS
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US20200289082

1. A system comprising: (10) (4)

a contact microphone;

a position sensor;

a processor operatively connected to the contact microphone and the position sensor;

a computer readable storage medium having program instructions embodied therewith, the program instructions executable by the processor to cause the processor to perform a method comprising: receiving from the contact microphone audio comprising sounds emanating from a human joint during flexion;

receiving, from the position sensor, motion data of the human joint;

synchronizing the motion data with the audio;

extracting a plurality of features from the audio;

providing the plurality of features and the motion data to a trained classifier;

obtaining from the trained classifier a first score indicative of joint health; and

displaying the first score with an indication to perform follow-up when the score is below a predetermined threshold.

2. The system of claim 1, the method further comprising: (1) (1)

4. The system of claim 1, the method further comprising: (3) (1)

canceling noise from the audio prior to extracting the plurality of features.

5. The system of claim 4, wherein canceling noise comprises: (0) (2)

6. The system of claim 4, wherein canceling the noise comprises: (0) (1)

19. The system of claim 4, wherein canceling noise is performed using the motion data. (1) (0)

7. The system of claim 1, wherein the plurality of features comprises signal frequency, amplitude, zero-crossing rate, entropy of energy, spectral centroid, spectral spread, mel-frequency cepstral coefficients, or chroma vector. (0)

8. The system of claim 1, wherein the trained classifier comprises a random decision forest. (0)

9. The system of claim 1, wherein the trained classifier comprises a neural network. (0)

10. The system of claim 1, wherein the trained classifier comprises a support vector machine. (0)

11. The system of claim 1, the method further comprising: (2) (1)

15. The system of claim 1, the method further comprising outputting the first score or the second score to a user. (0)

17. The system of claim 1, wherein the position sensor is in contact with an exterior of a human knee. (1) (0)

21. The system of claim 1, the method further comprising: (0) (2)

16. A method comprising: (1) (7)

receiving audio from a contact microphone, the audio comprising sounds emanating from a human joint during flexion;

receiving, from a position sensor, motion data of the human joint;

synchronizing the motion data with the audio;

extracting a plurality of features from the audio;

providing the plurality of features and the motion data to a trained classifier;

obtaining from the trained classifier a first score indicative of joint health; and

displaying the score with an indication to perform follow-up when the score is below a predetermined threshold.

22. The method of claim 16, further comprising: (0) (2)

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Application US20200289082

ASSESSING JOINT CONDITION USING ACOUSTIC SENSORS

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