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Searching: audio signal





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Patent # Description
US-8,115,542 Variable frequency class-D amplifier, control method thereof, and ramp generator therefor
A class-D amplifier includes a ramp generator to provide a ramp signal having a frequency varying with an audio input signal, and a modulator to convert the...
US-8,113,955 Game service system
A game service system is provided for transmitting and receiving a broadcast signal and reproducing an image and an audio signal. This system allows a user not...
US-8,112,284 Methods and apparatus for improving high frequency reconstruction of audio and speech signals
The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilizing high frequency reconstruction (HFR). It...
US-8,112,283 In-vehicle audio apparatus
An audio apparatus has a function of correcting an audio signal in response to a noise level. The audio apparatus includes a correction unit that corrects an...
US-8,112,271 Audio encoding device and audio encoding method
Provided is an audio encoding device capable of improving performance of an adaptive codebook and improving quality of a decoded audio. In this audio encoding...
US-8,112,270 Digital recording and playback system with voice recognition capability for concurrent text generation
A recording and playback system is provided. The system includes an audio capturing device configured to receive an analog input and an encoder coupled to the...
US-8,112,060 Electronic device with detachable audio module
An electronic device includes a main body and an audio module. The main body includes a first circuit board and a first coil. The first circuit board is...
US-8,111,860 Recreational bone conduction audio device, system
A waterproof recreational audio device and method that transmits sound via transcutaneous bone conduction provides high fidelity musical signals to a user. The...
US-8,111,847 Electret materials, electret speakers, and methods of manufacturing the same
A speaker comprises at least one electrode electrically coupled with an audio signal input and a film comprising at least one electret layer. The film is...
US-8,111,846 Low distortion switching amplifier circuits and methods
Embodiments of the present invention include switching amplifier circuits and methods. In one embodiment, the present invention includes a low distortion method...
US-8,111,845 System having a pulse width modulation device
A system, a device and a method for pulse width modulation is disclosed. One embodiment includes a pulse width modulation device, a first pulse width modulation...
US-8,111,843 Compensation for nonuniform delayed group communications
A method for synchronizing audio reproduction in collocated end devices is presented. Each of the devices auto-correlates using noise to determine a threshold...
US-8,111,841 Audio input/output device and method for switching input/output functions
Using a 4-pin audio jack, 3-pin signal interfaces including the ground interface are assigned with conventionally used earphone/microphone functions (one...
US-8,111,840 Echo reduction system
A system for reducing an echo and/or a residual echo in a microphone output signal includes an echo compensation filter configured to receive audio input...
US-8,111,839 Always on headwear recording system
A system that records audio and stores the recording is provided. The system includes first and second monitoring assemblies mounted in an earpiece that...
US-8,111,837 Data-driven media management within an electronic device
A method and apparatus for intelligently routing and managing audio signals within an electronic device is disclosed. The routing is responsive to a set of...
US-8,111,831 Acoustic apparatus, time delay computation method, and recording medium
An acoustic apparatus includes a positive value conversion section configured to convert, into a positive value, a response signal obtained by collecting a test...
US-8,111,830 Method and apparatus to provide active audio matrix decoding based on the positions of speakers and a listener
An active audio matrix decoding method and apparatus to generate multi-channel audio signals from a stereo channel audio signal. The method includes extracting...
US-8,111,820 Audio conference platform with dynamic speech detection threshold
The present invention comprises a method for audio/video conferencing. In a preferred embodiment, the method comprises using a dynamic threshold value to...
US-8,111,716 Method and apparatus for formatting data signals in a digital audio broadcasting system
A data unit for transmitting data in a digital broadcasting system includes a first payload field, and a first byte code field having a value indicating an...
US-8,111,703 IP telephone repeater, IP telephone repeating system and IP telephone repeating method
An IP telephone repeater includes a first communication portion connected to an internet IP telephone network, a second communication portion connected to a...
US-8,111,196 Stacked patch antennas
According to various exemplary embodiments, an antenna assembly generally includes one or more antennas, such as a single multi-frequency antenna, first and...
US-8,111,099 Multi-channel audio playback apparatus and method
A multi-channel audio playback apparatus including a channel interface, a first switching amplifier and a second switching amplifier is provided. The channel...
US-8,111,074 Method and apparatus to measure differential phase and frequency modulation distortions for audio equipment
A testing method or apparatus utilizes multiple frequencies applied to a device under test for measuring newly discovered frequency modulation effects. An...
US-8,111,044 Auxiliary power adapter having device controls
An accessory for a portable electronic device, such as a digital music player, includes a set of device controls for controlling the portable electronic device....
US-8,108,895 Content selection based on signaling from customer premises equipment in a broadcast network
Systems and methods are presented for insertion of assets into a stream of content (e.g., audio and/or video programming). Such assets may be targeted to...
US-8,108,889 Digital television receiver module and digital television receiver using the same
A DTV module includes a CPU, a decoder, and a CA interface circuit. The decoder executes a decoding processing on a digital television signal inputted from a...
US-8,108,888 Methods and apparatus to monitor audio/visual content from various sources
Methods and apparatus to monitor audio/visual content from various sources are disclosed. An example method to monitor a media content presentation comprises...
US-8,108,569 Data flow manager for device mobility
A system and method for transferring data flows, such as streaming video or audio signals, between end devices that are members of the same end device group is...
US-8,108,221 Mixed lossless audio compression
A mixed lossless audio compression has application to a unified lossy and lossless audio compression scheme that combines lossy and lossless audio compression...
US-8,108,220 Techniques for accommodating primary content (pure voice) audio and secondary content remaining audio...
The invention enables the inclusion of voice and remaining audio information at different parts of the audio production process. In particular, the invention...
US-8,108,219 Apparatus and method of encoding and decoding audio signal
In one embodiment, at least one channel in a frame of the audio signal is subdivided into a plurality of blocks such that at least two of the blocks having...
US-8,108,210 Apparatus and method to eliminate noise from an audio signal in a portable recorder by manipulating frequency bands
A noise removing apparatus and method usable in a portable recorder to remove noise and enhance a voice signal when the voice signal with noise is input to the...
US-8,108,093 Automotive scan tool with enhanced audio, video and voice recognition functionality
A diagnostic tool for a vehicle, includes a signal translator communicating with the vehicle in at least one protocol, an input unit for inputting information,...
US-8,107,654 Mixing of in-the-ear microphone and outside-the-ear microphone signals to enhance spatial perception
This document provides a hearing assistance device for playing processed sound inside a wearer's ear canal, the hearing assistance device comprising a first...
US-8,107,643 Apparatus and method of automatically compensating an audio volume in response to channel change
An apparatus and method of automatically compensating audio volume in response to a channel change. The method includes generating a gain value to adjust a...
US-8,107,641 Communication system and control method therefor, program, and storage medium
A communication system has a communication controller for multiplexing and transmitting a power supply voltage and an audio signal to be played back by a...
US-8,107,640 Car-use extended device and setting method for operation interface of car-use control system
A car-use extended device is applied to electrically communicate to a car-use audio device to form a car-use control system, so as to simulate a user-to-machine...
US-8,107,636 Individual audio receiver programmer
Methods and devices to compensate for individual hearing loss when listening to audio systems are described. An individualized frequency configuration is...
US-8,107,632 Digital signal processing apparatus, method thereof and headphone apparatus
A digital signal processing apparatus in which a first digital filter reproduces that part of an impulse response that responds fast, and a decimation filter...
US-8,107,631 Correlation-based method for ambience extraction from two-channel audio signals
A method of ambience extraction includes analyzing an input signal to determine the time-dependent and frequency-dependent amount of ambience in the input...
US-8,107,625 IP phone intruder security monitoring system
A voice communications terminal is provided having a microphone to receive an audio stream and a voice activity detector to determine whether the audio stream...
US-8,107,617 Audio processor
An audio processor of a loud speech communication system including a speaker and a microphone is provided. The audio processor includes: an adaptive filter...
US-8,107,595 Supervised paging, messaging background music and emergency voice evacuation system
The present invention generally discloses a supervised paging, messaging background music and emergency voice evacuation system. In one embodiment, the system...
US-8,107,505 Method and apparatus for generating information signal to be recorded
A compressively-encoding-resultant video signal resulting from compressively encoding a video signal, a first compressively-encoding-resultant audio signal...
US-8,107,321 Joint position-pitch estimation of acoustic sources for their tracking and separation
The invention relates to a method for localizing and tracking acoustic sources (101) in a multi-source environment, comprising the steps of recording...
US-8,106,948 Mobile terminal device, computer-readable recording medium, and computer data signal
Even if an external output device like an earphone is disconnected during outputting of reproduced recorded contents, the recorded contents can be consecutively...
US-8,106,745 Remote control signaling using audio watermarks
A system for using a watermark embedded in an audio signal to remotely control a device. Various devices such as toys, computers, and appliances, equipped with...
US-8,106,744 Remote control signaling using audio watermarks
A system for using a watermark embedded in an audio signal to remotely control a device. Various devices such as toys, computers, and appliances, equipped with...
US-8,106,282 Music accompaniment apparatus having delay control function of audio or video signal and method for controlling...
There is provided a music accompaniment apparatus that is connected to at least one external device to reproduce an audio or video signal, the music...
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