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Searching: audio signal





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Patent # Description
US-7,735,011 Midi composer
A technique for creating polyphonic audio signals of telecommunication devices such that the technique may be performed quickly without a user needing music...
US-7,734,465 Sub-band voice codec with multi-stage codebooks and redundant coding
Techniques and tools related to coding and decoding of audio information are described. For example, redundant coded information for decoding a current frame...
US-7,734,362 Calculating a doppler compensation value for a loudspeaker signal in a wavefield synthesis system
For reducing Doppler artifacts in the wave-field synthesis due to delay changes from one time to a second time, first, the delay for the first time and the delay...
US-7,734,310 Mobile terminal device
To provide a mobile terminal device which enables a user to view the television broadcast while the television broadcast is being displayed or the television...
US-7,734,274 Narrow-band detections of a received signal
The frequency of an RF signal to be transmitted is modulated at the transmitting unit, and the modulation information is used by the receiving unit to filter out...
US-7,734,265 Audio muting circuit and audio muting method
In an audio muting circuit, after a short delay from a first time at which a first mute signal generation circuit causes a first mute signal to fall from "H"...
US-7,734,256 System for interfacing with an audio player, and method of manufacturing same
A system for interfacing with an audio player comprises a housing (110, 410) containing a first connector (111, 411), a transmission device (120, 420) including...
US-7,733,918 System for live audio presentations
In a live audio presentation system, a stage rack and a front of house rack are interconnected by a transmission medium that transmits digital audio data and...
US-7,733,673 Method and apparatus to reduce audio frequencies in a switching power supply
A controller for use in a power supply regulator is disclosed. One controller includes a feedback circuit coupled to generate an equivalent switching frequency...
US-7,733,428 Audio-visual (AV) apparatus and its control method
According to one embodiment, an audio-visual apparatus that has received operation information transmitted using infrared receives a response signal via a radio...
US-7,733,376 Remote monitor and control system for draining floodgate of seawall
Disclosed is a remote monitor and control system for draining floodgate of a seawall in that movie and audio signals of a draining floodgate are transmitted to a...
US-7,733,367 Method and system for audio/video capturing, streaming, recording and playback
A system and method for audio/visual displaying, capturing, streaming, recording and playback is disclosed. The invention has many applications including...
US-7,733,174 Feedback controlled power limiting for signal amplifiers
An apparatus is provided. The apparatus includes an amplifier, differential amplifiers, and FETs. The amplifier has an intermediate node and an output node, and...
US-7,733,171 Class D amplifier having PWM circuit with look-up table
A class D amplifier includes a noise-shaping modulator, a pulse width modulator, and a pulse amplifier. The noise-shaping modulator receive a pulse code...
US-7,733,151 Operating clock generation system and method for audio applications
A clock signal generator (1) includes a phase locked loop (PLL) circuit (25) which requires a reference clock signal of at least a predetermined first frequency...
US-7,732,938 Adapter for use with vehicle-mounted electronics
An adapter for use with vehicle-mounted electronics includes an adapter body further including an input section having at least one main input terminal to which...
US-7,730,512 Audio and video transmission and receiving system
A system of distributing video and/or audio information employs digital signal processing to achieve high rates of data compression. The compressed and encoded...
US-7,729,906 Clicking noise detection in a digital audio signal
In a method (M) to detect a noise signal (PS1, PS2, PS3) in a digital audio signal (EAS), it is provided that the audio signal (EAS) is divided into successive...
US-7,729,790 Phase alignment of audio output data in a multi-channel configuration
Systems and methods for ensuring proper phase alignment of audio signals which are processed by separate hardware channels in an audio amplification system. In...
US-7,729,687 Audio delivery of callerid information to a wireless communications device
Systems and methods for announcing audio calling identification information associated with an incoming communications signal from a calling party to a wireless...
US-7,729,675 Reducing noise during a gain change
In one embodiment, the present invention includes a method for injecting a gain compensation value into a signal path of a receiver for a predetermined time when...
US-7,729,673 Method and apparatus for multichannel signal limiting
A method and apparatus provide multichannel signal limiting to prevent any channel signal within a multichannel signal from exceeding defined limits, while still...
US-7,729,497 Audio signal enhancement
An audio signal (A) is enhanced by dividing the signal into time segments of a selected frequency range and scaling the audio signal in each time segment. The...
US-7,729,461 System and method of signal processing
An audio processor is disclosed and includes a sample rate converter and a digital phase-locked-loop module in communication with the sample rate converter. The...
US-7,729,391 Transmitting device with discard control of specific media data
A transmitting device includes a first buffer for temporarily storing audio data, a second buffer for temporarily storing video data, a multiplexing unit for...
US-7,729,255 Method of a signal transmission for controlling a quantity of data transmitted and a signal transmission...
When digital signals are to be transmitted between a camera unit and a camera control unit, the distance of their transmission depends on the frequency at which...
US-7,728,874 Video camera apparatus
A video camera apparatus provided with image capturing means, which includes: audio communication means for receiving an audio signal from a wireless microphone...
US-7,728,666 Close-loop class-D audio amplifier and control method thereof
The present invention discloses a Class-D power amplifier and control method thereof. In one embodiment, the amplifier feeds back the signal at the output node...
US-7,728,660 Audio signal processing system and method
An audio signal processing system and method is disclosed. In a particular embodiment, the audio signal processing system includes a first electrical path...
US-7,728,658 Low-noise, low-distortion digital PWM amplifier
Systems and methods for performance improvements in digital switching amplifiers using low-pass filtering to reduce noise and distortion. In one embodiment, a...
US-7,728,651 Drive circuit, voltage conversion device and audio system
The first control transistor is connected between a first input node for receiving a first input signal swinging between a first voltage and a second voltage and...
US-7,725,310 Audio encoding
Coding of an audio signal (x) represented by a respective set of sampled signal values (x(t)) for each of a plurality of sequential time segments is disclosed....
US-7,725,075 Control element for simplex HF to VHF/UHF cross-band system with transmission breakthrough
The device and method disclosed deals with the operation of a cross-band simplex radio frequency communications system. In a system having a first band receiver...
US-7,725,073 System and method for providing event spectators with audio/video signals pertaining to remote events
A system and method providing content for access by a portable device at an event is provided. The method includes receiving a plurality of signals from a...
US-7,725,006 Record carrier carrying a video signal and at least one additional information signal
A record carrier is described carrying a video signal and at least one additional information signal, such as graphics or audio. The at least one additional...
US-7,724,908 System and method for programming a hearing aid
A system for providing a talk-over functionality from an attendant to a hearing aid user comprises a hearing aid (4), a link device (5) connected to the hearing...
US-7,724,891 Method to reduce acoustic coupling in audio conferencing systems
A method to reduce acoustic coupling in an audio conferencing system having a loudspeaker and a plurality of microphones, comprising detecting the presence of...
US-7,724,885 Spatialization arrangement for conference call
A method for distinguishing speakers in a conference call of a plurality of participants, in which method speech frames of the conference call are received in a...
US-7,724,843 Clock adjustment for a handheld audio system
A handheld audio system having a radio signal decoder that includes a method for adjusting a system clock. Adjusting the system clock includes receiving a signal...
US-7,724,727 Communicating calls from analog devices using voice over packet technology
Communicating a call from an analog device is disclosed. An analog interface receives analog signals from an analog device, and a receiver receives audio...
US-7,724,165 Audio codec and built-in self test method for the same
An audio codec and a BIST method adapted for the audio codec are provided. The BIST method includes the following steps. A first channel digital-to-analog...
US-7,724,082 Method and apparatus for pulse width modulation in a switching amplifier
There is provided a method and apparatus for output pulse width modulation in a digital amplifier including: a determining step of adding or subtracting a value...
US-7,721,028 Keyboard video mouse (KVM) switch between plurality of internal USB hubs each associated with plurality of...
An improved KVM switch is provided which enables computers to be connected to the KVM switch by reduced numbers of cables. It also supports transmission of...
US-7,720,677 Time warped modified transform coding of audio signals
A spectral representation of an audio signal having consecutive audio frames can be derived more efficiently, when a common time warp is estimated for any two...
US-7,720,676 Method and device for spectral reconstruction of an audio signal
An audio signal encoded in the form of data is spectrally reconstructed so part of the frequency spectrum of the audio signal is decoded with a spectral band...
US-7,720,515 Apparatus and method for reducing power consumption in a mobile unit
In a disclosed embodiment, a mobile unit includes a codec, a vocoder, and an audio decoder. The vocoder and the audio decoder provide respective outputs to an...
US-7,720,435 Multicast reception measurement system
A business model of satellite digital audio broadcasting, also referred to as multicasting, teaches computer improvements in business operations for the...
US-7,720,251 Embedded appliance for multimedia capture
A multimedia device includes input ports dedicated to receiving a real-time media signal and a processor system dedicated to capturing the real-time media...
US-7,720,249 Watermark embedder and reader
A watermark system includes an embedder, detector, and reader. The watermark embedder encodes a watermark signal in a host signal to create a combined signal....
US-7,720,241 Sound image localization apparatus and method and recording medium
A sound image localization apparatus for localizing a reproduced sound image at a sound source position convolves an impulse response through each path from an...
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