Abstract: A method for training an algorithm for predicting a knee adduction moment (KAM) includes, while each subject walks over forceplates, capturing kinematic data, generating first ground reaction force (GRF) data, generating second GRF data, and generating reference KAM data based on the kinematic data and the first GRF data. While repeatedly training the algorithm by incrementing i by one, the method performs generating a model, which predicts reference KAM data, validating the predicted reference KAM data based on reference KAM data of the subjects other than the i-th subject, adjusting internal parameters by minimizing an error between the predicted KAM data and reference KAM data of the subjects other than the i-th subject, and producing an accuracy score for the model based on an error between the predicted reference KAM data and the reference KAM data of the i-th subject.

Abstract: An apparatus, system, and method for selectively enhancing a desired sound while suppressing noise is provided. An apparatus comprises a plurality of microphones situated at spatially diverse locations to provide microphone signals, a spatial filter coupled to the microphones, the spatial filter configured to spatially filter the microphone signals, and a noise suppressor coupled to the spatial filter, the noise suppressor for suppressing noise. In accordance with at least one embodiment, the noise suppressor comprises a voice activity detector coupled to the spatial filter, the voice activity detector for detecting voice activity and for selecting an updated spatial parameter value for the spatial filter to use for performing further spatial filtering.

Abstract: A method, apparatus, and article of manufacture for a wearable audio user interface are described. In accordance with at least one embodiment, the apparatus or article of manufacture comprises a head covering configured to cover an upper portion of a user's head, a transmit audio transducer located in a forehead region of the head covering, and a receive audio transducer located in a temporal region of the head covering. The transmit audio transducer is configured to provide directional response oriented toward a user's mouth to obtain a transmit audio signal. The receive audio transducer is configured to convert a receive audio signal to a form perceptible by a user's ear. As one example, the head covering comprises elasticized knit textile material, and an interface circuit may be located in an occipital region of the head covering and connected to the transmit audio transducer and to the receive audio transducer.

Abstract: An apparatus, system, and method for selectively enhancing a desired sound while suppressing noise is provided. An apparatus comprises a plurality of microphones situated at spatially diverse locations to provide microphone signals, a spatial filter coupled to the microphones, the spatial filter configured to spatially filter the microphone signals, a noise suppressor coupled to the spatial filter, the noise suppressor for suppressing noise, and an audio amplifier, the audio amplifier coupled to the noise suppressor, the audio amplifier for amplifying an audible output signal. In accordance with at least one embodiment, the noise suppressor comprises a voice activity detector coupled to the spatial filter, the voice activity detector for detecting voice activity and for selecting an updated spatial parameter value for the spatial filter to use for performing further spatial filtering.

Abstract: A multi-axis swivel connector defines rotational axes between parts of the multi-axis swivel connector. Some of the rotational axes can extend cross-wise to one another. Some of the rotational axes can define adjustable inclination angles between parts of the multi-axis swivel connector. Parts of the swivel connector can be respectively configured for at least partially facilitating connections with articles such as a sling and a firearm.