Sine saturation transform

摘要

A transform for determining a physiological measurement is disclosed. The transform determines a basis function index from a physiological signal obtained through a physiological sensor. A basis function waveform is generated based on basis function index. The basis function waveform is then used to determine an optimized basis function waveform. The optimized basis function waveform is used to calculate a physiological measurement.

主权项

1. A method of determining a physiological parameter of a monitored patient attached to a noninvasive optical sensor, the method comprising:
receiving one or more signals indicative of light attenuated by body tissue of pulsing blood in said monitored patient, said one or more signals usable to determine measurements for one or more physiological parameters of said monitored patient; electronically determining at least one basis function index based on said one or more signals; electronically generating at least one basis function waveform based on said at least one basis function index; electronically combining said at least one basis function waveform and said one or more signals to derive frequency components of said one or more signals; and electronically processing said frequency components of said one or more signals to determine an output measurement of one or more of said one or more physiological parameters.