Abstract: An apparatus comprising: a processor and memory including computer program code, the memory and the computer program code configured to, with the processor, cause the apparatus to: detect sound from an environment proximal to a device; determine a context of the device using the detected sound; and provide signaling to allow for selection of a context-specific service for use in navigation by the device based upon the result of the determined context.

Abstract: The specification and drawings present a new method, apparatus and software product for providing flexible audio communication solutions using ear-devices utilizing, e.g., electrode transducers with one or more sensors comprising a surface resonator cavity sensitive to a predetermined acoustic frequency range for using, for example, in headsets and hearing aids. The ear-device can be configured for inserting it into a human ear for a handsfree operation and the sensors can be configured to detect human tissue vibrations using the surface resonator cavity. The acoustic communication solutions with these ear-devices may include: providing two-way communications in normal conditions as well as in noisy conditions, providing protection of hearing, recording the true sound field bin-aurally, providing a playback capability, providing volume enhancement and equalization for persons with hearing defects, etc.

Abstract: This invention describes a method for generating noise references for adaptive interference cancellation filters for applications in generalized sidelobe canceling systems. More specifically the present invention relates to a multi-microphone beamforming system similar to a generalized sidelobe canceller (GSC) structure, but the difference with the GSC is that the present invention creates noise references to the adaptive interference canceller (AIC) filters using steerable beams that block out the desired signal when the beam is steered away from the desired signal source location.

Abstract: This invention discloses an improvement to a digital Acoustic Echo Control (AEC) in hands-free telephones. It describes an additional adaptive filter referred to as a residual echo filter, which is placed after the usual echo canceller and it is used to efficiently and accurately estimate a residual echo signal b(i) and a system coupling factor ?(i), which can be utilized to establish an efficient control for the AEC system and construct the appropriate filters. The invention also describes a control block means performing a joint operation control of the echo canceller, residual echo suppressor and residual echo filter for achieving more consistent echo cancellation results and enhancing output signal quality.