Systems and methods for monitoring and/or assessing metabolic and/or cardiopulmonary parameters of a subject are disclosed. Systems and methods for high speed monitoring of metabolic parameters of a subject in a substantially unrestricted setting are disclosed. Further disclosed are wearable systems and methods for substantially unobtrusive monitoring of a breath stream from a subject. Also disclosed are wearable systems and methods for real-time monitoring of the respiratory function and/or one or more disease states of a subject. Data systems to coordinate simultaneous monitoring of one or more metabolic and/or cardiopulmonary parameters of a plurality of subjects are also disclosed.

An exoskeleton includes a control system which incorporates a feedback system used to establish and communicate orthosis operational information to a physical therapist and/or to an exoskeleton user. The feedback system can take various forms, including employing sensors to establish a feedback ready value and communicating the value through one or more light sources which can be in close proximity to joints of the exoskeleton joints.

A physiological acoustic monitoring system receives physiological data from an acoustic sensor, down-samples the data to generate raw audio of breathing sounds and compresses the raw audio. The acoustic monitoring system has an acoustic sensor signal responsive to tracheal sounds in a person. An A/D converter is responsive to the sensor signal so as to generate breathing sound data. A decimation filter and mixer down-samples the breathing sound data to raw audio data. A coder/compressor generates compressed audio data from the raw audio data. A decoder/decompressor decodes and decompresses the compressed audio data into decompressed audio data. The decompressed audio data is utilized to generate respiration-related parameters in real-time. The compressed audio data is stored and retrieved so as to generate respiration-related parameters in non-real-time. The real-time and non-real-time parameters are compared to verify matching results across multiple monitors.

A system includes a control unit configured to be worn by a subject, and having a wireless transceiver configured to receive and transmit signals and a processor coupled to a memory, at least one respiratory volume sensor mountable to the chest or abdomen of the subject and at least one secondary sensor mountable relative to the subject. The respiratory volume sensor is configured to operably generate one or more volumetric signals representative of a respiratory volume of the subject and communicate the one or more volumetric signals to the wireless transceiver of the control unit. The at least one secondary sensor is configured to operably generate one or more secondary signals and representative of at least one of a physiological, a cardiopulmonary or a metabolic condition of the subject, and communicate the one or more secondary signals to the wireless transceiver of the control unit.

A system measures performance activity of a user using a motion capture device, such as one or more knee sleeves each a plurality of inertial-measurement unit. Captured motion characteristic data is classified against previously captured data and then mapped to particular audio effects, which are then altered in different ways depending on the classification and provided the user. The audio feedback works to improve the user's performance of the activity by changing between negative and positive feedback depending on the user's performance. The system regularly measures the motion capture data, altering audio effects provided to the user, until the user reaches an improvement goal.

Method for estimating a pure tone hearing threshold or a pure tone audiogram of a person with a non-calibrated audio-system, comprising the steps of performing a supra-threshold test at least over a portion of the audible frequency spectrum, wherein the audible frequency spectrum ranges particularly from 16 Hz to 20.000 Hz, wherein the supra-threshold test is performed on an unreferenced audio-system at a first relative sound level relative to a predefined output level of the unreferenced audio-system, determining the result of the supra-threshold test for at least a portion of the audible frequency spectrum, wherein the results of the supra-threshold test are provided particularly relative to the predefined output level of the unreferenced audio-system, determining from the progression of the determined result of the supra-threshold test at least one absolute pure tone threshold, wherein the at least one absolute pure tone threshold is provided in absolute physical units, particularly in decibels hearing level or decibels sound pressure level.

A signal indicative of sound detected by at least one sensor at an audio device is received. The audio device may at least partially covers a pinna and the detected sound may interact with at least a torso of a human body, but can also interact with the head and shoulder. The signal is modulated with a non-linear transfer function to generate a modulated signal indicative of one or more audio cues for spatializing the detected sound while the audio device at least partially covers a pinna. Sound is output by the audio device based on the modulated signal.

Eye prescriptions may be determined by providing a simple, easy to use, portable device with a specially configured targeting light source that aligns the eye, mitigates accommodation, and provides accurate results. Unlike stationary, closed view autorefractors, this device typically is portable, self-usable, relatively inexpensive, enabling more widespread use across the world.

An acoustic monitoring system has an acoustic front-end, a first signal path from the acoustic front-end directly to an audio transducer and a second signal path from the acoustic front-end to an acoustic data processor via an analog-to-digital converter. The acoustic front-end receives an acoustic sensor signal responsive to body sounds in a person. The audio transducer provides continuous audio of the body sounds. The acoustic data processor provides audio of the body sounds upon user demand.

The invention refers to an apparatus that determines the abnormal electrical potential points which appear in the ventricular myocardium, particularly the left ventricle, which are capable of generating arrhythmias with a serious impact. The apparatus may assist the physician in objectively identifying, in real time, of the points which require ablating. The apparatus to determine the points of abnormal electrical potential from the ventricular myocardium contains an amplification and analogue filtering module, an analogue to digital signal converter, a hardware device which contains a microchip for digital processing, by means of a software, of signals received from an EKG and a catheter, with a display for the visualization of the signals received from the EKG and the catheter, as well as the abnormal electrical potentials found in the ventricular myocardium, identified via the software. The software analyzes the received signal from the catheter, referring to the amplitude, duration and synchronization with the QRS complex of the signal received from the EKG, as well as the degree of spectral fragmentation.