Sine saturation transform
First Claim
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1. A method for filtering a physiological signal to improve a calculation of a pulse rate, the method comprising:
- obtaining within a patient monitor a signal indicative of pulse rate information of a patient being monitored;
obtaining an initial frequency estimate of a pulse rate of the patient with a processor;
combining at least one sinusoidal waveform with said signal to produce a predetermined response; and
signal component processing the combined signal with the processor to determine said pulse rate.
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Abstract
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.
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Citations
14 Claims
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1. A method for filtering a physiological signal to improve a calculation of a pulse rate, the method comprising:
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obtaining within a patient monitor a signal indicative of pulse rate information of a patient being monitored; obtaining an initial frequency estimate of a pulse rate of the patient with a processor; combining at least one sinusoidal waveform with said signal to produce a predetermined response; and signal component processing the combined signal with the processor to determine said pulse rate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A signal component processor capable of determining a pulse rate of a patient being monitored, the processor comprising:
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at least one input capable of receiving a signal indicative of pulse rate information of a patient being monitored; and a frequency calculator configured to determine an initial frequency estimate of a pulse rate of the patient, configured to combine at least one sinusoidal waveform with said signal to produce a predetermined response, and configured to component process the combined signal to determine said pulse rate. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification