The Low Power Mode setting on iPhone and iPad is a feature that helps conserve battery life and keep your device running longer.
To change the time on a Fitbit, you'll need to adjust the time zone setting for your device on the Fitbit mobile app or desktop website.
Abstract: When estimating the acoustic channel impulse response (CIR) at low frequencies, matched filter (MF)-based methods suffer from limited resolution due to the narrow source bandwidth. To ...