Control of spectral agressors in a physiological signal montoring device

A method for monitoring signals comprising:

• sampling, with an analog-to-digital converter, an input signal to produce a sampled signal;
• and
• cycling a processor between an algorithm processing mode and a sleep mode based on a sleep cycle rate,
• wherein the analog-to-digital converter and the processor are both electrically coupled to a power distribution network that is electrically coupled to a power source,
• wherein the sleep cycle rate causes spectral interference to propagate through the power distribution network and into the sampled signal via the analog-to-digital converter, and
• wherein the sleep cycle rate further causes the spectral interference that is generated due to the sleep cycle rate to occur in the sampled signal at one or more frequencies that are outside of a target frequency band of the sampled signal.

An apparatus for monitoring signals comprising:

• means for sampling an input signal to produce a sampled signal;
• and
• means for cycling between an algorithm processing mode and a sleep mode based on a sleep cycle rate,
• wherein the means for sampling and the means for cycling are electrically coupled to a power distribution network that is electrically coupled to a power source,
• wherein the sleep cycle rate causes spectral interference to propagate through the power distribution network and into the sampled signal, and
• wherein the sleep cycle rate further causes the spectral interference that is generated due to the sleep cycle rate to occur in the sampled signal at one or more frequencies that are outside of a target frequency band of the sampled signal.