Systems and methods for identifying pulse rates

A system for determining a pulse rate from a photoplethysmographic (PPG) signal, comprising:

• a wavelet processor capable of performing a continuous wavelet transform of a received PPG signal to produce a wavelet transformed signal and identifying a first candidate pulse rate of the PPG signal from the wavelet transformed signal;
• a spectral processor capable of performing a spectral transform of the received PPG signal to produce a spectrum and identifying a second candidate pulse rate of the PPG signal from the spectrum;
• and
• a pulse rate discriminator capable of determining a pulse rate from the first candidate pulse rate and the second candidate pulse rate.

Computer-readable medium for use in determining a pulse rate from a photoplethysmographic (PPG) signal, the computer-readable medium having computer program instructions recorded thereon, wherein the computer program instructions, when executed on a processor, cause the processor to:

• perform a continuous wavelet transform of a PPG signal to produce a wavelet transformed signal;
• perform a spectral transform of the PPG signal to produce a spectrum;
• identify a first candidate pulse rate of the PPG signal from the wavelet transformed signal;
• identify a second candidate pulse rate of the PPG signal from the spectrum;
• and
• determine a pulse rate from the first candidate pulse rate and the second candidate pulse rate.