Patent ID: 8532932

Claim:
A method for processing a signal to identify a consistent portion of the signal, comprising: obtaining a photoplethysmograph (PPG) signal from a sensor; selecting, using a processor, a current portion of the PPG signal for analysis; identifying, using the processor, one or more signal peaks in the current portion of the PPG signal; processing, using the processor, the one or more signal peaks based on a consistency metric; comparing, using the processor, the processed one or more signal peaks to the consistency metric to determine if the current portion of the PPG signal is consistent; responsive to determining that the current portion of the PPG signal is consistent, generating, using the processor, a wavelet transform based at least in part on the current portion of the PPG signal; and determining, using the processor, one or more parameters based at least in part on the wavelet transform; and responsive to determining that the current portion of the PPG signal is not consistent, selecting, using the processor, a next portion of the PPG signal for analysis.