Abstract: In one embodiment, a method for matching sensors includes generating a first and second sensor signals respectively from first and second sensors, separating the sensor signals into magnitude and phase components, determining a phase difference from the phase components, and matching the magnitude of the first sensor signal to that of the second sensor signal by multiplying the magnitude of the first sensor signal by a magnitude correction value that is a function of a ratio of the phase components of the first and second sensor signals.

Abstract: In one embodiment, an antenna for receiving incident electromagnetic (EM) radiation includes a dipole having first and second elements, and a reflector for reflecting the incident EM radiation into reflected EM radiation. The reflector, first element, and second element are configured to orient the first element substantially broadside to the reflected EM radiation and end-fire to the incident EM radiation when the second element is oriented substantially broadside to the incident EM radiation. Conversely, they are configured to orient the second element substantially broadside to the reflected EM radiation and end-fire to the incident EM radiation when the first element is oriented substantially broadside to the incident EM radiation.

Abstract: Techniques are provided for vector noise cancellation. Different value combinations for a plurality of weighting factors may be established for a plurality of selection regions. Each value combination for the plurality of weighting factors may correspond to a different combination of a set of input signals. One or more characteristics of input signals may be used to select a particular selection region. A particular value combination of the set of weighting factors may be chosen to attenuate or amplify the input signals to generate one or more output signals.

Abstract: Techniques are provided for vector noise cancellation. Different value combinations for a plurality of weighting factors may be established for a plurality of selection regions. Each value combination for the plurality of weighting factors may correspond to a different combination of a set of input signals. One or more characteristics of input signals may be used to select a particular selection region. A particular value combination of the set of weighting factors may be chosen to attenuate or amplify the input signals to generate one or more output signals.

Abstract: Techniques are provided for vector noise cancellation. Different value combinations for a plurality of weighting factors may be established for a plurality of selection regions. Each value combination for the plurality of weighting factors may correspond to a different combination of a set of input signals. One or more characteristics of input signals may be used to select a particular selection region. A particular value combination of the set of weighting factors may be chosen to attenuate or amplify the input signals to generate one or more output signals.

Abstract: Techniques are provided for vector noise cancellation. Different value combinations for a plurality of weighting factors may be established for a plurality of selection regions. Each value combination for the plurality of weighting factors may correspond to a different combination of a set of input signals. One or more characteristics of input signals may be used to select a particular selection region. A particular value combination of the set of weighting factors may be chosen to attenuate or amplify the input signals to generate one or more output signals.

Abstract: Techniques are provided for vector noise cancellation. Different value combinations for a plurality of weighting factors may be established for a plurality of selection regions. Each value combination for the plurality of weighting factors may correspond to a different combination of a set of input signals. One or more characteristics of input signals may be used to select a particular selection region. A particular value combination of the set of weighting factors may be chosen to attenuate or amplify the input signals to generate one or more output signals.

Abstract: A system and method for suppressing noise in one or more of at least first and second channels include obtaining a magnitude difference of signals in the first and second channels, obtaining a magnitude sum of signals in the first and second channels, obtaining a ratio of the magnitude difference to the magnitude sum, generating an attenuation value based on the ratio, selecting an attenuator based on the magnitude difference, and attenuating a signal in a channel by the attenuation value using the selected attenuator.

Abstract: Techniques are provided for vector noise cancellation. Different value combinations for a plurality of weighting factors may be established for a plurality of selection regions. Each value combination for the plurality of weighting factors may correspond to a different combination of a set of input signals. One or more characteristics of input signals may be used to select a particular selection region. A particular value combination of the set of weighting factors may be chosen to attenuate or amplify the input signals to generate one or more output signals.

Abstract: Techniques are provided for vector noise cancellation. Different value combinations for a plurality of weighting factors may be established for a plurality of selection regions. Each value combination for the plurality of weighting factors may correspond to a different combination of a set of input signals. One or more characteristics of input signals may be used to select a particular selection region. A particular value combination of the set of weighting factors may be chosen to attenuate or amplify the input signals to generate one or more output signals.

Abstract: Techniques are provided for vector noise cancellation. Different value combinations for a plurality of weighting factors may be established for a plurality of selection regions. Each value combination for the plurality of weighting factors may correspond to a different combination of a set of input signals. One or more characteristics of input signals may be used to select a particular selection region. A particular value combination of the set of weighting factors may be chosen to attenuate or amplify the input signals to generate one or more output signals.

Abstract: In one embodiment, a method for matching first and second signals includes transforming, over a selected frequency band, the first and second signals into the frequency domain such that frequency components of the first and second signals are assigned to associated frequency bins, generating a scaling ratio associated with each frequency bin, and for at least one of the two signals, or at least a third signal derived from one of the two signals, scaling frequency components associated with each frequency bin by the scaling ratio associated with that frequency bin. The generating comprises determining, during a non-startup period, a signal ratio of the first and second signals for each frequency bin, determining the usability of each signal ratio, and designating a signal ratio as a scaling ratio if it is determined to be usable.

Abstract: A method for processing an input signal to create an enhanced output signal includes obtaining an envelope of the input signal, determining a logarithm signal of the envelope, determining a rate of change of the logarithm signal to obtain a slope value, and applying a value derived from the slope value to the input signal to thereby generate an enhanced output signal.

Abstract: A system and method for suppressing noise in one or more of at least first and second channels include obtaining a magnitude difference of signals in the first and second channels, obtaining a magnitude sum of signals in the first and second channels, obtaining a ratio of the magnitude difference to the magnitude sum, generating an attenuation value based on the ratio, selecting an attenuator based on the magnitude difference, and attenuating a signal in a channel by the attenuation value using the selected attenuator.

Abstract: Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a phase difference dependent manner, consistent with suppression of off-axis pick-up and on-axis enhancement. Nulls between sensitivity lobes are widened, effectively narrowing the sensitivity lobes and improving directionality and noise discrimination.

Abstract: Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a phase difference dependent manner, consistent with suppression of off-axis pick-up and on-axis enhancement. Nulls between sensitivity lobes are widened, effectively narrowing the sensitivity lobes and improving directionality and noise discrimination.

Abstract: Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a phase difference dependent manner, consistent with suppression of off-axis pick-up and on-axis enhancement. Nulls between sensitivity lobes are widened, effectively narrowing the sensitivity lobes and improving directionality and noise discrimination.

Abstract: A dynamic range manipulation system, for use for example in an audio playback system such as a two-way communication system, mobile telephone, MP3 player, and the like, obtains a measure of ambient noise at the playback location and adjusts the gain of the drive signal provided to the loudspeaker based on this measure and based on the audio signal to be played back.

Abstract: A wired or wireless earset assembly comprises an earset housing having a curved portion configured to fit to the top of an ear, a speaker driver contained in a speaker housing, a flexible tube having a first extension so as to be coupled with at least a part of the curved portion of the earset housing and a second extension coupled with the speaker housing, a rotatable cap containing a bud coupled with the speaker driver, a sound delivery port in the bud, a circuitry for processing an input signal in the case, and a wire in the flexible tube connecting the circuitry and the speaker driver. The structure of the assembly allows a user to wear it with great comfort and high quality acoustic performance for an extended period, enables the assembly to fit to both right and left ears by a simple rotation of the cap, and increases ease of manufacturability.

Abstract: Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a phase difference dependent manner, consistent with suppression of off-axis pick-up and on-axis enhancement. Nulls between sensitivity lobes are widened, effectively narrowing the sensitivity lobes and improving directionality and noise discrimination.