Patent application number | Description | Published |
20090017878 | ACOUSTIC ECHO REDUCTION IN MOBILE TERMINALS - An electronic device includes first and second speakers, a microphone, and circuitry configured to generate first and second audio signals in response to a source audio signal, to play the first audio signal over the first speaker, and to play the second audio signal over the second speaker. The first and second audio signals are configured, and the first and second speakers are positioned, so that the first audio signal output by the first speaker and the second audio signal output by the second speaker combine destructively at the microphone. | 01-15-2009 |
20090154756 | Printed Circuit Board for a Flat-Panel Speaker - A flat-panel speaker is attached to an exterior surface of a printed circuit board (PCB) housed within a consumer electronic device. Rather than place the flat-panel speaker within a sealed speaker box and then attach the speaker box to the PCB, as is conventional, the present invention attaches the flat-panel speaker to the exterior surface of the PCB without the speaker box. Removing the speaker box allows designers to reduce the dimensions of the device, and to minimize the complexity of the device. | 06-18-2009 |
20090156273 | Loudspeaker for a Clamshell Wireless Communication Device - A clamshell-type wireless communication device has a flip, a base, and a hinge that pivotably connects the flip to the base. The flip pivots relative to the base between an open position and a closed position. An earpiece speaker in the flip renders the voice of a remote party to a user when the flip is in the open position. A loudspeaker within the hinge also renders audible sound to the user. The loudspeaker is positioned within the hinge such that neither the flip nor the base obstructs the audible sound projected by the loudspeaker regardless of whether the flip is in the open position or the closed position. | 06-18-2009 |
20100027799 | ASYMMETRICAL DELAY AUDIO CROSSTALK CANCELLATION SYSTEMS, METHODS AND ELECTRONIC DEVICES INCLUDING THE SAME - Crosstalk cancellation systems for left and right channel stereo audio signals that are played over left and right stereo loudspeakers include circuitry that is configured to apply more crosstalk cancellation delay to a difference signal between the left and right stereo audio signals, than to a sum signal of the left and right channel stereo signals. The circuitry may be configured to apply no crosstalk cancellation delay to the sum signal. Related crosstalk cancellation methods and electronic devices incorporating same are also disclosed. | 02-04-2010 |
20100054492 | Leak-Tolerant Earspeakers, Related Portable Electronic Devices and Methods of Operating the Same - Portable electronic devices are provided including a housing and first and second audio transducers positioned in the housing. The first and second audio transducers are supported by the housing and driven out of phase relative to one another to provide a leak tolerant output from the portable electronic device. Related earspeakers and methods of operating portable electronic devices are also provided. | 03-04-2010 |
20120197093 | APPARATUS AND METHODS FOR MONITORING PHYSIOLOGICAL DATA DURING ENVIRONMENTAL INTERFERENCE - Apparatus and methods for attenuating environmental interference are described. A wearable monitoring apparatus includes a housing configured to be attached to the body of a subject and a sensor module that includes an energy emitter that directs energy at a target region of the subject, a detector that detects an energy response signal—or physiological condition—from the subject, a filter that removes time-varying environmental interference from the energy response signal, and at least one processor that controls operations of the energy emitter, detector, and filter. | 08-02-2012 |
20140114147 | SYSTEMS AND METHODS FOR VARIABLE FILTER ADJUSTMENT BY HEART RATE METRIC FEEDBACK - A physiological signal processing system for a physiological waveform that includes a cardiovascular signal component provides a variable high pass filter that is responsive to the physiological waveform, and that is configured to high pass filter the physiological waveform in response to a corner frequency that is applied. A heart rate metric extractor is responsive to the variable high pass filter and is configured to extract a heart rate metric from the physiological waveform that is high pass filtered. A corner frequency adjuster is responsive to the heart rate metric extractor and is configured to determine the corner frequency that is applied to the variable high pass filter, based on the heart rate metric that was extracted. Analogous methods may also be provided. | 04-24-2014 |
20150018636 | Reduction of Physiological Metric Error Due to Inertial Cadence - The heart rate monitor disclosed herein removes a step rate component from a measured heart rate by using one or more filtering techniques when the step rate is close to the heart rate. In general, a difference between the step rate and the heart rate is determined, and the step rate is filtered from the heart rate based on a function of the difference. | 01-15-2015 |
20150031967 | Apparatus and Methods for Monitoring Physiological Data During Environmental Interference - Apparatus and methods for attenuating environmental interference are described. A wearable monitoring apparatus includes a housing configured to be attached to the body of a subject and a sensor module that includes an energy emitter that directs energy at a target region of the subject, a detector that detects an energy response signal—or physiological condition—from the subject, a filter that removes time-varying environmental interference from the energy response signal, and at least one processor that controls operations of the energy emitter, detector, and filter. | 01-29-2015 |