Auditory display of knee joint vibration signals
First Claim
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1. A method of diagnosing an abnormal joint condition comprising the steps of:
- (a) recording a vibroarthrographic (VAG) signal from the joint as it is in movement;
(b) directly transforming the VAG signal to an auditory signal; and
(c) listening to the auditory signal to discern features of diagnostic interest.
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Abstract
Computer-assisted auscultation of knee joints by auditory display of vibroarthrographic signals emitted during active movement of the leg include audification and sonification. In audification, the vibroarthrographic signals are scaled in time and frequency using a time-frequency distribution to facilitate aural analysis. In sonification, the instantaneous mean frequency and envelope of the vibroarthrographic signals are derived and used to synthesize sounds that may facilitate more accurate diagnosis than the original signals by improving their aural quality.
55 Citations
9 Claims
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1. A method of diagnosing an abnormal joint condition comprising the steps of:
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(a) recording a vibroarthrographic (VAG) signal from the joint as it is in movement;
(b) directly transforming the VAG signal to an auditory signal; and
(c) listening to the auditory signal to discern features of diagnostic interest. - View Dependent Claims (2, 3, 4, 5)
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6. A method of diagnosing an abnormal joint condition comprising the steps of:
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(a) recording a vibroarthrographic (VAG) signal from the joint as it is in movement;
(b) extracting features from the VAG signal to control a sound synthesizer;
(c) generating a sound from the sound synthesizer which is unique to the VAG signal but does not bear a direct relationship to the VAG signal; and
(d) listening to the sound to discern features of diagnostic interest. - View Dependent Claims (7, 8, 9)
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Specification