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Searching: audio signal





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Patent # Description
US-7,587,289 Data cable powered sensor fixture
A sensor fixture can be affixed within a wall and powered using the same cable along which data signals are transmitted. A data cable is attached to the fixture,...
US-7,587,254 Dynamic range control and equalization of digital audio using warped processing
This invention describes a method for adjusting the loudness and the spectral content of digital audio signals in a real-time using warped spectral filtering. A...
US-7,587,227 Directional wireless communication systems
A wireless communication system based on a directional speaker is disclosed. The system can include an interface unit and a base unit. The audio signals from the...
US-7,587,223 Terminal for mobile phone and method for controlling the synchronism of terminal for mobile phone
In a mobile phone terminal, in which a sound, such as the audio, may be synchronized with a moving picture even in case a sound processor unit processing the...
US-7,587,167 Integrated digital radio module
An audio entertainment system having a primary circuit board with a processor in communication with an antenna input, an audio output and a connector. The...
US-7,587,131 Audio clocking in video applications
A method of operating an electronic video device such as a DVD player, wherein video clock signals and audio clock signals are derived from a system clock signal...
US-7,587,054 Audio system based on at least second-order eigenbeams
A microphone array-based audio system that supports representations of auditory scenes using second-order (or higher) harmonic expansions based on the audio...
US-7,587,053 Audio-based position tracking
Embodiments of the present invention provide an audio-based position tracking system. The position tracking systems comprises one or more speakers, an array of...
US-7,587,043 Seals for communication devices and method for assembling communication device
A seal (200) in a communication device (100) and a method (600) for assembling the communication device are disclosed. A transducer (402) is positioned on a...
US-7,586,544 Method and apparatus for testing lip-sync of digital television receiver
A lip synchronization test method for DTV receivers. The method includes the steps of: generating a digital audio stream having a frame index inserted therein...
US-7,586,517 Image pickup apparatus
An image pickup apparatus includes an image processing unit for extracting an image parameter indicating a change in shooting condition from an image signal...
US-7,585,252 Personal training device using multi-dimensional spatial audio
A personal training device is provided for a participant of pace-based physical training. The device includes an input for receiving an input signal indicative...
US-7,584,098 Vocabulary-independent search of spontaneous speech
A method of identifying a location of a query string in an audio signal is provided. Under the method, a segment of the audio signal is selected. A score for a...
US-7,584,009 Multi-chip PWM synchronization and communication
Systems and methods for synchronizing multiple digital audio controller chips, wherein one of the chips is designated as a master and the other chips are...
US-7,583,929 Mobile communication terminal, channel information providing module, method of automatically accessing to DMB,...
Disclosed is a mobile communication terminal automatically accessing to DMB, including: a broadcast receiving unit that receives and demodulates a DMB signal,...
US-7,583,805 Late reverberation-based synthesis of auditory scenes
A scheme for stereo and multi-channel synthesis of inter-channel correlation (ICC) (normalized cross-correlation) cues for parametric stereo and multi-channel...
US-7,583,804 Music information encoding/decoding device and method
In an audio-information encoding apparatus, in order to encode an audio signal containing a white-noise component, an index iL indicating the energy level of the...
US-7,583,695 Hardware arrangement, terminal, and method for transferring audio signal in packet-switched communications network
The invention relates to a protocol converter (14) and a method utilizing the converter, enabling a wireless connection (13) between a cellular network (11) and...
US-7,583,626 Multiplex switching scheme for communications network
An earth station interface architecture provides full mesh connectivity for a relatively small number of network stations. A component of the architecture is a...
US-7,583,122 Receiver of digital signals having a variable hysteresis, in particular for audio digital application
Embodiments of the invention relate to a signal receiver inserted between a first and a second voltage reference and having a first and a second input terminal...
US-RE40,897 Constant current line circuit with class features
A line circuit utilizing a differential amplifier whose output is regulated to zero volts D.C. (when the subscriber's set is off-hook) by a negative feedback...
US-7,581,239 Video on demand DVD system
An apparatus comprising a drive server, a control server and one or more decoder devices. The drive server may be configured to present one or more DVD data...
US-7,580,833 Constant pitch variable speed audio decoding
A digital audio signal can be processed to have a constant pitch for a range of playback rates. A playback rate associated with a portion of the digital audio...
US-7,580,832 Apparatus and method for robust classification of audio signals, and method for establishing and operating an...
An apparatus for producing a fingerprint signal from an audio signal includes a means for calculating energy values for frequency bands of segments of the audio...
US-7,580,762 Microphone with ultrasound/audible mixing chamber to secure audio path
Methods, microphones, and systems are provided for processing sound waves. The sound waves are detected with a portable device (such as a microphone) and an...
US-7,580,671 Audio system, radio record module and methods for use therewith
A radio record module includes a radio data system (RDS) decoder module that decodes a received RDS signal, that has an associated audio signal, into received...
US-7,580,535 Binaural synchronization
Binaural hearing devices are operated by establishing a communication link between the devices. The communication link is exclusively for transmitting non-audio...
US-7,580,532 Multi-channel pulse width modulation apparatus
Disclosed are multi-channel PWM (Pulse Width Modulation) apparatuses and methods for modulating PCM-based multi-channel audio signals read from an optical medium...
US-7,580,531 Dynamic range reducing volume control
An audio amplifier is provided having a compressor with an automatically-adjustable compressor. Compression is linked to the volume control in an inverse...
US-7,580,530 Audio characteristic correction system
An audio characteristic correction system adapted to an audio surround system in which a sound emitted from a directional speaker (an array speaker) is reflected...
US-7,579,958 Audio power meter
An audio power meter includes a circuit for measuring the power of an amplified audio signal outputted by an audio power amplifier to which the audio power meter...
US-7,579,908 Digital audio amplifiers, electronic systems, and methods
An embodiment of an electronic system includes a digital audio amplifier having a continuous time modulator adapted to generate a difference signal between an...
US-7,579,832 Cross-drive impedance measurement circuits for sensing audio loads on CODEC channels
An audio system includes a CODEC audio jack having left and right audio ports and a jack sense circuit. The jack sense circuit includes left and right amplifiers...
US-7,578,505 Electronic game device with hand and foot controls
An electronic game device is disclosed that can simultaneously engage at least two players each at a user position arranged on opposite ends or sides of a...
US-7,577,410 Audio apparatus
An audio apparatus is provided that permits selection of either analog or digital audio signals in execution of a scan operation. A radio receiver 300 comprises...
US-7,577,337 Audio/video data recording/reproducing device and method, and audio/video data reproducing device and method
An audio/video data recording/reproducing device is provided that allows all video and audio signals, which can be displayed by a display of the audio/video data...
US-7,577,273 Steganographically encoded video, deriving or calculating identifiers from video, and related methods
This application relates, e.g., to processing video and audio. One claim recites a method including: utilizing a multi-purpose electronic processor programmed...
US-7,577,263 System for audio signal processing
A sound reproduction system comprising a digital audio signal input (1), a digital audio signal processor (2, DSP) and a digital audio signal output (3) wherein...
US-7,577,262 Microphone device and audio player
A signal generating section generates a main signal and a noise reference signal. A determining section determines whether a level ratio is larger than a...
US-7,577,260 Method and apparatus to direct sound
The invention relates to sonic steerable antennae and their use to achieve a variety of effects. The invention comprises a method and apparatus for taking an...
US-7,577,259 Method and apparatus for extending band of audio signal using higher harmonic wave generator
A higher harmonic wave generator generates a higher harmonic wave of an inputted audio signal having a predetermined band based on the inputted audio signal....
US-7,577,095 Low latency digital audio over packet switched networks
Method and Apparatus for delivering audio signals from a source node to a destination node on a network. The apparatus uses a number of switches that transmit...
US-7,576,748 Graphics system with embedded frame butter having reconfigurable pixel formats
A graphics system including a custom graphics and audio processor produces exciting 2D and 3D graphics and surround sound. The system includes a graphics and...
US-7,576,665 System and method for receiving analog and digital input
A system and a method are provided for receiving analog and digital audio input via a single audio input connector. The method includes receiving an input signal...
US-7,576,649 Anti-theft alarm system for portable computer
An anti-theft alarm system for a portable computer, the anti-theft alarm system includes a controller, a button for delivering an anti-theft enabling signal to...
US-7,576,606 Digital PWM amplifier having a low delay corrector
Systems and methods for performance improvements in digital switching amplifiers using a low delay corrector. In one embodiment, a digital pulse width modulation...
US-7,576,604 All-digital class-D audio amplifier
An all-digital class-D audio amplifier and method of digitizing an analog signal comprises a pulse-width modulation (PWM) wave generator for generating a PWM...
US-7,576,565 Crossbar waveform driver circuit
A driving waveform circuit includes a crossbar array having input columns and output rows wherein the crossbar array is configured to store data in the form of...
US-7,576,277 Tuning device for musical instruments and computer program for the same
A portable tuning device samples discrete values on a fundamental frequency component of an audio signal, which is equivalent to sound waves produced in a...
US-7,574,917 Method for in-situ measuring of acoustic attenuation and system therefor
There is provided a method for measuring in-situ the acoustic attenuation obtained by a hearing protection device worn by a user, comprising: positioning the...
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