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Searching: audio signal





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Patent # Description
US-8,120,711 Display system and method of controlling a display system
A display system and a method of controlling a display system are provided. The display system may include a receiving device to transmit a power control signal...
US-8,119,900 Systems for combining inputs from electronic musical instruments and devices
An apparatus for combining input signals produced by a plurality of electric musical devices includes a plurality of audio buses and a plurality of segments....
US-8,118,376 Display rack
A display rack, on which a display apparatus is mounted, is provided. The display rack includes an amplifier, a top board portion, a transparent top board...
US-8,117,039 Multi-staging recursive audio frame-based resampling and time mapping
A multi-stage recursive sample rate converter ("SRC") typically embodied as digital signal processor provides for an efficient structure for converting digital...
US-8,117,028 Method and device for code conversion between audio encoding/decoding methods and storage medium thereof
When performing audio communication by using different encoding/decoding methods, a code obtained by encoding audio by a certain method is converted into a code...
US-8,117,027 Method and apparatus for introducing information into a data stream and method and apparatus for encoding an...
Techniques for introducing information into a data stream first obtains the spectral values of the short-term spectrum of the audio signal. Separately,...
US-8,116,889 Method, system, and computer program product for managing controlled residential or non-residential environments
A control server, or similar central processor, manages the distribution of data (including audio and video), voice, and control signals among a plurality of...
US-8,116,868 Implantable device with cardiac event audio playback
Cardiac monitoring and stimulation methods and systems provide audio playback of cardiac events and transthoracic monitoring and therapy. A medical system...
US-8,116,608 Method and apparatus for reproducing video and audio
According to one of embodiments, a method and apparatus for reproducing video and audio changes a playback speed for video and a playback speed for audio...
US-8,116,508 Dual-mode loudspeaker
An apparatus uses a transducer to produce vibration in the ultrasonic frequency range and in the audible frequency range. A membrane or cantilever structure is...
US-8,116,502 In-ear monitor with concentric sound bore configuration
A multi-driver, in-ear monitor is provided that is coupleable to an external audio source, for example via a source input cable or a wireless receiver. A...
US-8,116,497 Portable speaker system for outdoor umbrella
A portable system for an outdoor umbrella includes a portable housing, a detachable locker, and an audio device. The portable housing includes a first housing...
US-8,116,491 Method for the dynamic range compression of an audio signal and corresponding hearing device
It should be possible to carry out dynamic range compression in hearing devices, and in particular in hearing aids, so it is free from distortion and...
US-8,116,483 Speaker device with the phase changing device for varying the phase of the audio signal
A speaker device comprises a first speaker (SP1) for reproducing an audio signal and a second speaker (SP2) adapted for reproducing an audio signal and spaced...
US-8,116,481 Audio enhancement system
A system for enhancing the sound signal produced by an audio system in a listening environment by compensating for ambient noise in the listening environment is...
US-8,116,480 Filter coefficient calculation device, filter coefficient calculation method, control program,...
In a filter coefficient calculation device according to the present invention, a gain correction characteristic calculation section calculates impulse responses...
US-8,116,476 Audio signal receiving apparatus, audio signal receiving method and audio signal transmission system
An audio signal receiving apparatus includes a sound source information receiving portion to receive sound source information containing sound source type...
US-8,116,474 System for suppressing ambient noise in a hands-free device
In order to suppress as much noise as possible in a hands-free device in a motor vehicle, for example, two microphones (M1, M2) are spaced a certain distance...
US-8,116,471 Audio signal dereverberation
A method of estimating the reverberations in an acoustic signal (y) comprises determining the frequency spectrum (Y) of the signal (y), providing a first...
US-8,116,469 Headphone surround using artificial reverberation
A surround experience for headphones can be created using various techniques and tools. The described techniques and tools can be applied separately or in...
US-8,116,466 Apparatus and method for testing sound input and output of sound card
An apparatus and a method for testing a sound card are applicable for detecting whether a sound leakage problem occurs to a sounding interface of the sound...
US-8,116,463 Method and apparatus for detecting audio signals
A method and an apparatus for detecting audio signals are disclosed. The input audio signal is inspected to check whether it is a foreground frame or a...
US-8,116,460 Efficient and scalable parametric stereo coding for low bitrate audio coding applications
The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These...
US-8,116,459 Enhanced method for signal shaping in multi-channel audio reconstruction
The present invention is based on the finding that a reconstructed output channel, reconstructed with a multi-channel reconstructor using at least one downmix...
US-8,116,449 Cost-effective, multichannel digital logger
A digital logger system includes a multichannel interface circuit that: 1. concurrently and continuously-receives audio telecommunication signals for at least...
US-8,116,368 PWM signal generator, PWM signal generating device, and digital amplifier
In a full digital amplifier for an audio amplifier or the like, it is possible to suppress the concentration of an electromagnetic noise emission spectrum at a...
US-8,115,712 Method for reducing audio noise of display and driving device thereof
A method for reducing audio noise of a display is provided. A horizontal synchronization signal, a reference signal and a substrate voltage signal are...
US-8,115,564 Systems and methods to minimize startup transients in class-D amplifiers
Systems and methods for minimizing startup transients in digital audio controllers that may result in audible artifacts in the output of an audio amplification...
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...
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