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Ambulatory Phonation Monitoring

Real-world monitoring of body system functions continues to receive growing interest as mobile and wearable devices become more ubiquitous in individuals’ normal daily activities. Ambulatory phonation monitoring involves the ongoing measurement of physiological processes related to laryngeal sound production during everyday verbal communication. The earliest attempts at ambulatory phonation monitoring began with the development of speech and voice “accumulators” that simply used acoustic or neck-placed contact microphones to keep track of daily voice use.

As technologies have advanced, miniature accelerometers have been incorporated to record phonation from neck-skin vibration since they are more immune to environmental noise than microphones. The placement of the accelerometer on the neck skin below the thyroid prominence ensures that speech-related information is not recorded (alleviating confidentiality concerns). Depending on the hardware ...

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