Bruce L. Davis,Tony F. Rodriguez,William Y. Conwell,Shankar Thagadur Shivappa,Ravi K. Sharma,Richard F. Gibson
申请号：
US14289364
公开号：
US09445763B2
申请日:
2014.05.28
申请国别(地区):
US
年份:
2016
代理人:
摘要：
Audio sounds are captured from a subject's body, e.g., using a smartphone or a worn array of microphones. Plural features are derived from the captured audio, and serve as fingerprint information. One such feature may be a time interval over which a threshold part of spectral energy in the audio is expressed. Another may be a frequency bandwidth within which a second threshold part of the spectral energy is expressed. Such fingerprint information is provided to a knowledge base that contains reference fingerprint data and associated metadata. The knowledge base matches the fingerprint with reference fingerprint data, and provides associated metadata in return—which can comprise diagnostic information related to the captured sounds. In some arrangements, an audio signal or pressure waveform stimulates the body at one location, and is sensed at another, to discern information about the intervening transmission medium. A great variety of other features and arrangements are also detailed.
