Patent ID: 9319028
Filing Date: 2016-04-19
CPC Classification: A61B,G01V,G10L,H03H

Claim Text:
1. An apparatus comprising: a computer having a storage device; a source of an initial series of digitized signal values; a first filter bank that includes a first plurality of digital bandpass filters each operably coupled to the source of digitized signal values and each configured to digitally filter the initial series of digitized signal values, wherein each one of the first plurality of digital bandpass filters has a respective center frequency that is unique among respective center frequencies of the first plurality of digital bandpass filters and a respective frequency range, and wherein each one of the first plurality of digital bandpass filters has an output signal; a first plurality of fractional-phase measurement units that each determines a plurality of amplitude values and a plurality of phase-determined time points per full waveform cycle of the output signal of a corresponding one of the first plurality of digital bandpass filters; and a first frequency-component tracker that uses the plurality of amplitude values from the first plurality of fractional-phase measurement units to detect and track a first tracked frequency component as that first tracked frequency component's frequency moves from one to another frequency range of the first plurality of digital bandpass filters, and to store information regarding the tracked frequency component into the storage device, wherein the stored information includes instantaneous frequency and amplitude of the tracked frequency component at each of a first sequence of time points.