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Class 381/18 - Pseudo quadrasonic


Subclass of Class 381 - Electrical audio signal processing systems and devices
Definition: Subject matter where the plurality of channels are four
No. of applications: 77
Last issue date: 12/29/2011


1    
Application No.Application TitleIssue Date
20110317841METHOD AND DEVICE FOR OPTIMIZING AUDIO QUALITY
A computer-implemented method is disclosed for enhancing quality of an audio source. The method comprises receiving control information; receiving an initial signal from the audio source; and generating a dynamic control signal based on the control information. The cont...
12/29/2011
20110182431Method and Apparatus for Decoding an Audio Signal
An apparatus for decoding an audio signal and method thereof are disclosed. The present invention includes receiving the audio signal and spatial information, identifying a type of modified spatial information, generating the modified spatial information using the spati...
07/28/2011
20110129093SYSTEM AND METHOD FOR DISPLAYING SOUND AS VIBRATIONS
There is provided a method and a system for presenting audio signals as vibrotactile stimuli to the body in accordance with a Model Human Cochlea (MHC). Audio signals are obtained for presentation. The audio signals are separated into multiple bands of discrete frequenc...
06/02/2011
20110091044Virtual speaker apparatus and method for processing virtual speaker
A virtual speaker apparatus and a virtual speaker processing method is disclosed. The virtual speaker apparatus uses the closest surround speaker when a virtual speaker to be virtually generated is a back left virtual speaker or a back right virtual speaker....
04/21/2011
20100303246VIRTUAL AUDIO PROCESSING FOR LOUDSPEAKER OR HEADPHONE PLAYBACK
There are provided methods and an apparatus for processing audio signals. According to one aspect of the present invention there is included a method for processing audio signals having the steps of receiving at least one audio signal having at least a center channel si...
12/02/2010
20100278346SPECTRAL MANAGEMENT SYSTEM
A spectral management system may be used in an audio system to receive and process audio signals having multiple distributed audio channels, such as a right, left, center, right side, left side, right rear and left rear channels. The spectral management system may separ...
11/04/2010
20100246833AUDIO MIXER
Six input channels, to which are allocated 5.1-channel surround signals from a plurality of input sources, are grouped into a surround channel group, and these six input channels are connected to corresponding ones of six surround buses in a one-to-one relationship. Thu...
09/30/2010
20090252339SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, SIGNAL PROCESSING PROGRAM, AND COMPUTER READABLE RECORDING MEDIUM
In this signal processing apparatus, a first-audio-parameter calculating unit calculates a first audio parameter based on two audio signals. A second-audio-parameter calculating unit calculates a second audio parameter based on the two audio signals. A surround-signal g...
10/08/2009
20090252340System, apparatus, and method of speaker
A system, and an apparatus of speaker, and a method for forming a virtual audio is provided. An audio source is processed by a second audio source processing program according to parameters which are entered by the user, and filtered to be a high frequency audio signal....
10/08/2009
20090220112VEHICLE SOUND SYSTEM
A vehicle sound system encompasses a combination of speaker configuration, speaker placement, and sound processing to improve sound quality. A pair of speakers (or rows of speakers) are placed close together and located in the front of the console or dashboard with thei...
09/03/2009
20090190766MULTI-CHANNEL AUDIO ENHANCEMENT SYSTEM FOR USE IN RECORDING PLAYBACK AND METHODS FOR PROVIDING SAME
An audio enhancement system and method for use receives a group of multi-channel audio signals and provides a simulated surround sound environment through playback of only two output signals. The multi-channel audio signals comprise a pair of front signals intended for ...
07/30/2009
20090180760PROVIDING MULTIPLE AUDIO STREAMS TO AN AUDIO DEVICE AS A SINGLE INPUT
According to some embodiments, a first audio stream associated with a first image stream and a second audio stream associated with a second image are determined. The first and second audio streams may each have, for example, at least two channels. The first and second a...
07/16/2009
20090161881SOUND SYSTEM FOR PORTABLE ELECTRONIC DEVICE
A sound system (30) for a portable electronic device (20) is provided. The sound system includes a sound generator (28), a sound processor (25), and a speaker subsystem (24). The sound generator is configured for generating sound recor...
06/25/2009
20080310640Method and Apparatus for Processing a Media Signal
An apparatus for processing a media signal and method thereof are disclosed, by which the media signal can be converted to a surround signal by using spatial information of the media signal. The present invention provides a method of processing a signal, the method comp...
12/18/2008
20080279389SOUND FIELD REPRODUCTION APPARATUS AND METHOD FOR REPRODUCING REFLECTIONS
Provided are sound field reproducing apparatus and method. The sound field reproducing apparatus includes an input unit for receiving reflection reproducing information, a signal processor for selecting loudspeakers and calculating reflection signal for applying a panni...
11/13/2008
20080247554Wireless Digital Transmission of Low Frequency Effects and Surround Channels For Surround Sound System
A subwoofer (72) is equipped with a wireless receiver (80) to receive signals containing information for a Low Frequency Effects (LFE) channel and information for both surround channels. In one form, the LFE is added to one or both surround channels to pro...
10/09/2008
20080226085Audio Apparatus
An audio apparatus includes an input unit for inputting stereo signals in which multi-channel surround-sound signals are mixed in accordance with a predetermined algorithm and a parameter indicating encoded contents of the algorithm, a surround-sound signal generator fo...
09/18/2008
20080165976SYSTEM AND METHOD FOR STEREO SOUND FIELD EXPANSION
A system and method for enhancing the stereo sound effect produced by speaker systems having two or more speakers fed by two or more channels or audio, respectively. Second-order high pass filtering is applied to first and second audio signals of a stereo signal. A phas...
07/10/2008
20080130905SOUND SYSTEM AND METHOD OF SOUND REPRODUCTION
A sound reproduction system comprises a left and right speakers located in close proximity, and a sound processor which provides audio signals to the pair of speakers. The sound processor preferably derives a cancellation signal from the difference between the left and ...
06/05/2008
20080107293Controlling Fading And Surround Signal Level
Systems and techniques for controlling a surround sound system having multiple input signals and multiple spatially diverse transducers may include defining a first control region and a second control region. When operating in the first control region, a first set of fu...
05/08/2008
20080101617Two-Channel to Three-Channel Audio Converter
A two-channel to three-channel audio converter that separates the lower frequency output signals from one of the left channel and the right channel is provided. Respective filters are used to separate the lower frequency outputs and the middle to high frequency outputs ...
05/01/2008
20080101618Two-Channel to Three-Channel Audio Converter
A two-channel to three-channel audio converter that separates the lower frequency output signals from one of the left channel and the right channel is provided. Respective filters are used to separate the lower frequency outputs and the middle to high frequency outputs ...
05/01/2008
20080085006Integrated multi-channel audio box
The present invention relates to audio visual devices, and is aimed to provide an audio box with stereo surround effect; an integrated multi-channel audio box having simple structure and neat appearances, no complex wiring necessary to connect to the source. The structu...
04/10/2008
20080063211MULTICHANNEL AUDIO AMPLIFICATION APPARATUS
There is provided a multichannel audio amplification apparatus including a speaker detection circuit for detecting whether or not a speaker is connected to an arbitrary speaker terminal of speaker terminal groups TA and TB, and an operating circuit and a display circuit...
03/13/2008
20080056503Head Related Transfer Functions for Panned Stereo Audio Content
A method to process audio signals, an apparatus accepting audio signals, a carrier medium that carried instructions for a processor to implement the method to process audio signals, and a carrier medium carrying filter data to implement a filter of audio signals. The me...
03/06/2008
20080008326APPARATUS AND METHOD FOR CONTROLLING A WAVE FIELD SYNTHESIS RENDERING MEANS
For controlling a wave field synthesis renderer arranged in a wave field synthesis system, a scene description, in which not an absolute position or an absolute time instant, but a time span or location span within which the audio object may vary is indicated for a sour...
01/10/2008
20070269062DEVICE AND METHOD FOR DRIVING A SOUND SYSTEM AND SOUND SYSTEM
A driving device for a sound system by loudspeaker signals, wherein the sound system has a wave field synthesis loudspeaker array and one or several supply loudspeakers arranged separate from the wave field synthesis array includes an audio input for receiving at least ...
11/22/2007
20070165868MULTI-CHANNEL AUDIO ENHANCEMENT SYSTEM FOR USE IN RECORDING AND PLAYBACK AND METHODS FOR PROVIDING SAME
An audio enhancement system and method for use receives a group of multi-channel audio signals and provides a simulated surround sound environment through playback of only two output signals. The multi-channel audio signals comprise a pair of front signals intended for ...
07/19/2007
20070160222Positioning audio output for users surrounding an interactive display surface
For use with an interactive display system having a generally horizontal interactive display surface, four speakers that are disposed at spaced-apart locations within a housing of the system so that a sound field produced by one or more energized speakers is directed ou...
07/12/2007
20070147622Audio apparatus
An audio apparatus, which is compatible with multi-channel audio sources, is capable of achieving reproduction without sound drop-out even in use with only two speakers. The audio apparatus includes an audio mixing circuit that inputs an L audio signal, R audio signal, ...
06/28/2007
20070140500Apparatus and method for synthesizing three output channels using two input channels
For synthesizing at least three output channels using two stereo input channels, the stereo input channels are analyzed to detect signal components occurring in both input channels. A signal generator is operative to introduce at least a part of the detected signal comp...
06/21/2007
20070127728Iterative decoding apparatus and method
An iterative decoding apparatus includes a channel detection unit receiving an input signal derived from an output signal of a channel and detecting a channel signal from the input signal by using a soft value; a channel decoding unit receiving the detected channel sign...
06/07/2007
20070127729AUDIO CODING
Parametric stereo coders use perceptually relevant parameters of the input signal to describe spatial properties. One of these parameters is the phase difference between the input signals (ITD or IPD). This time difference only determines the relative time difference be...
06/07/2007
20070110249Method of acoustic signal reproduction
Up to now, there have existed filters having a transfer function for canceling crosstalk components arriving from loudspeakers, at the listener's right/left ear, however, such filters have been incapable of properly reducing the inter-loudspeaker crosstalk components in...
05/17/2007
20070104331Multi-channel audio system and method for generating virtual speaker sound
To realize sound output so that a listener does not feel unnaturalness, an audio signal for a center speaker is multiplied by a transfer function for a left speaker and a transfer function for a right speaker, respectively, and an audio component for a left center speak...
05/10/2007
20070076894Audio control system
To propose an audio control system in that even if it has a thin center speaker, low sounds can be felt to be heard from the center speaker. A low frequency signal in a center channel audio signal is delayed, and then the delayed signal is added to a right and a left ch...
04/05/2007
20060222191Surround sound system
A surround sound system includes a pair of front speakers, a pair of surround speakers, a pair of reflective elements and a control unit. The front speakers are positioned in front of a listener location. The surround speakers are positioned in front of the listener loc...
10/05/2006
20060215841Method for treating an electric sound signal
A method for generating a sound giving a sensation of depth by applying, after extraction, a transfer function quadrille onto electric sound signals on the left and right thereof. The transfer functions simulate the trajectories taken by the sound associated with the el...
09/28/2006
20060159276Audio system
The designation of a localization position is received in accordance with an input position on a dashboard image in a localization-position reception window, and delay times for audio signals supplied to respective speakers are set so that the sound image is localized a...
07/20/2006
20060153391Set-up method for array-type sound system
There is disclosed a method for setting up a Sound Projector such that it is suitable for a variety of functions, including surround sound. The method allows a semi-automatic or automatic set-up to be accomplished whereby the Sound Projector emits test signals and these...
07/13/2006
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