The Embletta is a lightweight, portable sleep evaluation device that is easy to use. The Embletta needs no external power source and does not have the usual collection of wires so the patient can get out of bed during the night without having to disconnect any sensors. Embletta's diagnostic signal include position and activity, oxygen saturation, pulse and two respiratory effort signals. Nasal flow and pressure snore signals are obtained via a nasal cannula. This allows us to diagnose whether a patient has common snoring or a more life threatening symptom of sleep apnea.