Abstract: Hearing management, using a portable device or integrated portable devices, can include generating during a hearing diagnostics phase an audiogram based on responses of a user to signals conveyed to the user. In response to detecting ambient noises during the hearing diagnostics phase, noise cancellation can be performed to cancel the ambient noises in conjunction with conveying the signals to the user. During a hearing enhancement phase, sounds can be captured with the portable device. The captured sounds can be enhanced in real-time during the hearing enhancement phase by amplifying select frequencies of the captured sounds using signal gain. The frequencies can be selected, and the signal gain determined based on the audiogram. The captured sounds, now enhanced, can be conveyed to the user as frequency-enhanced sounds.

Abstract: A method includes, for each user of a group of users participating in a first clinical study: collecting a plurality of data associated with the user, wherein the plurality of data includes data received from a group of devices used by the user over a duration during the first clinical study; determining a state related to the user based on the plurality of data, wherein the state indicates operating conditions of the group of devices used by the user; determining an event alignment status by aligning events logged by the group of devices based on the state related to the user; and determining an individual compliance score for the user based on the event alignment status. The method also includes providing a recommended duration of the first clinical study based on the individual compliance scores of the group of users.

Abstract: A system includes an optical sensor and a signal processing module. The optical sensor is configured to be positioned on an area of skin of a patient. The optical sensor includes a light source for illuminating a capillary bed in the area of skin and a photodetector. The photodetector is configured to receive an optical signal from the capillary bed resulting from the illumination and to convert the optical signal into an electrical signal, the optical signal characterizing a fluctuation in a level of blood in the capillary bed. The signal processing module is configured to process the electric signal using a nonstationary frequency estimation method to obtain a processed signal related to at least one of a heart rate and a respiration rate of the patient. Another aspect relates to obtaining a quantity related to the blood pressure of the patient in addition to or instead of obtaining a processed signal related to at least one of the heart rate and the respiration rate of the patient.