3 results about "Pulse Transit Time" patented technology

The application discloses an old person emotional accompanying and health management large model for fusing child voice synthesis, and relates to the technical field of intelligent old people care and emotional accompanying. The system continuously collects physiological data such as blood pressure, heart rate and pulse transit time of the old person, calculates the deviation degree of each physiological characteristic parameter and combines the deviation degree into a physiological deviation vector; converts the deviation degree into an objective condition description text, generates a care feeling description text from the child's perspective by using a lightweight language model; analyzes the emotional tone and concern degree score from the text, and maps to generate voice emotional control parameters containing speech speed factors and fundamental frequency offset; after the dialogue is triggered, the child character reply text, the child voiceprint embedding vector and the voice emotional control parameters are input into the voice synthesis engine, and the child digital avatar voice suitable for the real-time physical condition of the old person is output. The application synchronizes the emotional expression of the child voice with the health condition of the old person, and improves the realism and empathy effect of the digital avatar accompanying.

A system for measuring the propagation time of optical pulses between at least two units. The presented system further enables the calculation of the distance between at least two units (101a, 101b), and the successive derivatives of said distance with respect to time, in various configurations. The bidirectional optical time transfer between two units is used for the calculation of the propagation time of optical pulses, which are generated by the optical source of each unit.

A hearing aid comprising a physiological sensor is disclosed, the hearing aid being comprised in a system comprising an input unit, an output unit, a signal-to-noise ratio estimator, a processing unit, a memory unit, at least a first and a second physiological sensor; the system being configured to: determine, based on the first physiological sensor, a first time point corresponding to a first maximum upstroke point of a first measured parameter; determine, based on the second physiological sensor, a second time point corresponding to a second maximum upstroke point of a second measured parameter; determine a current pulse transit time by calculating a time difference between the first time point and the second time point; and determine a current listening effort of a hearing aid user based on the current pulse transit time and a stored reference set of signal-to-noise ratios and pulse transit times.