Detecting Nasalization Using a Low-Cost Miniature Accelerometer

Abstract

A low-cost miniature accelerometer attached externally on the nose is as effective in providing an indication of nasalization as a more expensive accelerometer used in previous research. The more limited bandwidth of this low-cost accelerometer does not restrict its ability to monitor nasalization because the vibratory energy of interest is below 2,000 Hz. The optimal placement of the accelerometer on the nose is over the lateral nasal cartilage, a position along the upper side of the nose, just in front of the nasal bone.