Abstract: An anti-feedback device includes an anti-feedback filter provided in a closed loop. The anti-feedback device down-samples a signal of specific band selected from an output signal of an adaptive target signal transfer system and a signal of the same band selected from an input signal of the transfer system, and a filtering coefficient of the adaptive filter is updated by use of the down-sampled signals. The filter controller controls a filtering characteristic of the anti-feedback filter so that a peak gain of a frequency of an amplitude characteristic within a specific band of a closed loop determined from the filtering coefficient of the adaptive filter is suppressed. Moreover, the filter controller estimates a gain of the closed loop outside the specific band from the amplitude characteristic in the specific band and controls the amount of suppression of the anti-feedback filter outside the band in accordance with a result of estimation.

Abstract: A method and apparatus to reconstruct high-frequency components of an input audio signal. The apparatus includes a frequency inverter to invert the frequency spectrum of the input audio signal, a band pass filter which filters out the higher frequency components of the input audio signal, a converter which shifts the frequency spectrum of the filtered signal to create a correction signal, and an adder which adds the correction signal to the input audio signal to obtain a reconstructed audio signal.

Abstract: A system and method for automatically adjusting the gain of an audio system as a speaker's head moves relative to a microphone includes using a video of the speaker to determine an orientation of the speaker's head relative to the microphone and, hence, a gain adjust signal. The gain adjust signal is then applied to the audio system that is associated with the microphone to dynamically and continuously adjust the gain the audio system.

Abstract: A method for wireless data transmission for adaptive multiple protocols is disclosed. In one embodiment, data is collected by a data collecting devices and transmitted to one or more Cellular Digital Packet Data (“CDPD”) modems via one or more RS232 interfaces. Applications programs in the CDPD initiate communications and transmission of serial data begins when the status of both interfaces is established. Transmission of information as serial data via RS232 interfaces minimizes the resources required to communicate data between different devices using different standards and protocols.

Abstract: The mounting portion formed on the cover (1) is provided with a fitting boss (8) in a fitting recess (7). On the other hand, the mounting portion formed on the key sheet (3) is provided with fitting recess (10) in the fitting boss (9). The key sheet (3) is constructed in such a manner that the packaged component (11) is placed between the key sheet (3) and the printed substrate (12).

Abstract: A system for anonymously initiating communication between system-connected communications devices is provided wherein the initiation of communication results from comparison and priority matching of profile information shared between the devices. The system in one aspect comprises at least two communications devices connected to the system, the communications devices having at least a microprocessor, a data-input mechanism, a display screen, a wireless local-area-network protocol application enhanced with short-wave radio communication capability installed per instance to each of the devices, and a profile comparison and matching application installed per instance to each of the devices.

Abstract: There is provided an apparatus for scanning signals received by a wireless telephone, including (a) a monitor having a first monitor mode where an input signal received through an antenna is monitored at every first period of time and a second monitor mode where the input signal is monitored at every second period of time longer than the first period of time, (b) a mode-keeper for, while the monitor is set in the first monitor mode, keeping the monitor in the first monitor mode when the input signal is monitored in a third period of time longer than the first period of time, and (c) a mode-changer for, while the monitor is set in the first monitor mode, changing the first monitor mode to the second monitor mode when the input signal is not monitored in the third period of time.