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Binaural And Stereophonic

Binaural And Stereophonic patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

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Electrical Audio Signal Processing Systems And Devices


Binaural And Stereophonic



Sound field analysis system
08/28/14 - 20140241528 - In one embodiment, a sound field is mapped by extracting spatial angle information, diffusivity information, and optionally, sound level information. The extracted information is mapped for representation in the form of a Riemann sphere, wherein spatial angle varies longitudinally, diffusivity varies latitudinally, and level varies radially along the sphere. A...

Audio content playback method and apparatus for portable terminal
07/10/14 - 20140192986 - An audio content playback method for a portable terminal The audio content playback method includes checking a channel that is supportable by audio content that is currently engaged in group's simultaneous playback, in group's simultaneous playback of the audio content. The method includes allocating a channel to each of devices...

Mobile electronic device and audio playing means thereof
05/15/14 - 20140133657 - The present invention provides a mobile electronic device and an audio playing means thereof. The audio playing means comprises a first audio player and a second audio player for playing a left channel audio and a right channel audio respectively; a first audio receiver and a second audio receiver for...

Method and apparatus for providing 3d audio
05/15/14 - 20140133658 - Embodiments of the subject invention relate to a method and apparatus for virtualizing an audio file. The virtualized audio file can be presented to a user via, for example, ear-speakers or headphones, such that the user experiences a change in the user's perception of where the sound is coming from...

Method and encoder for processing a digital stereo audio signal
03/13/14 - 20140072120 - The invention discloses a method and an encoder for processing a digital audio stereo signal. A digital audio encoder for coding such audio signal comprises a predictive Temporal Noise Shaping (TNS) filter, a Mid-/Side (M/S) coding unit, a control unit for determining a first prediction gain related to the unmodified...

Audio system and method therefor
03/13/14 - 20140072121 - An audio system comprises a receiver which receives an input audio signal. A decomposer (103) decomposes the audio signal into at least a transient component signal and a non-transient component signal. An output circuit (105, 107, 109) then generates a first output audio signal in response to a weighted combination...

Real-time noise reduction apparatus for radio monitoring system
02/13/14 - 20140044266 - The present invention provides a real-time noise reduction apparatus for a radio monitoring system, including a dual channel digitizing unit configured to convert signals, subject to frequency down-conversion and inputted to two channels, into digital signals and a Digital Signal Processor (DSP) configured to reduce noise from time sample regions...

System for controlling audio frequencies of electronic appliances and a method of the same
01/16/14 - 20140016782 - The system comprises a master controller and an audio plug connected to the master controller. The audio plug includes at least four contacts electrically connected to corresponding poles of an audio frequency interface. Electrical coupling devices are disposed on circuits which respectively connect a first contact and a second contact...

Extraction of channels from multichannel signals utilizing stimulus
01/16/14 - 20140016783 - An approach and device for optimizing a sound system by extracting a two-channel stereo source out of a set of multiple channels with unknown frequency responses, crosstalk, time delays and sample rate by employing a digital test sequence that utilizes maximum-length-sequences (MLS) that is fed into the sound system and...

Apparatus and method for providing audio metadata, apparatus and method for providing audio data, and apparatus and method for reproducing audio data
10/17/13 - 20130272525 - An apparatus for providing audio metadata, the apparatus including an audio data generating unit to generate audio metadata including channel information of raw audio data, and an audio metadata transmitting unit to transmit the generated audio metadata to an apparatus for reproducing audio data....

Apparatus and method for decomposing an input signal using a downmixer
10/17/13 - 20130272526 - An apparatus for decomposing an input signal having a number of at least three input channels includes a downmixer for downmixing the input signal to obtain a downmixed signal having a smaller number of channels. Furthermore, an analyzer for analyzing the downmixed signal to derive an analysis result is provided,...

Audio apparatus and method of converting audio signal thereof
10/03/13 - 20130259236 - An audio apparatus and a method of converting an audio signal are provided. The method includes: receiving a first audio signal including a plurality of channels; comparing audio signals of the plurality of channels to estimate a source position of the first audio signal; localizing a source of the first...

Controllable playback system offering hierarchical playback options
08/08/13 - 20130202114 - A first apparatus performs the following: determining, using at least two microphone signals corresponding to left and right microphone signals and using at least one further microphone signal, directional information of the left and right microphone signals; outputting a first signal corresponding to the left microphone signal; outputting a second...

Circuits and methods to reduce pin count of a single channel device with a multi-channel serial interface
07/18/13 - 20130182850 - A channel selection circuit in a serial audio communication device provides channel selection for insertion or extraction of data to or from a multiplexed serial data stream without the requirement of extra channel selection inputs. The channel selection circuit has multiple counters structured such that each counter represents a channel...

Audio coupling system
05/09/13 - 20130114816 - A device for the sharing audio signals. A pair of headphones includes circuitry for connecting to an audio signal input, as is typical, but also for connecting to an audio signal output. The audio output allows a plurality of personal listening devices, for example headphones, to be linked together allowing...

Techniques for presenting sound effects on a portable media player
02/21/13 - 20130044883 - Improved techniques for presenting sound effects at a portable media device are disclosed. The sound effects can be output as audio sounds to an internal speaker, an external speaker, or both. In addition, the audio sounds for the sound effects can be output together with other audio sounds pertaining to...

Spatial angle modulation binaural sound system
01/10/13 - 20130010967 - A method of inducing a state of consciousness in a listener. The method includes providing first and second sound signals. The first sound signal is provided to one ear of the listener and the second sound signal is provided to the other ear of the listener. The second sound signal...

Apparatus and method for removing vocal signal
11/29/12 - 20120300941 - A method of removing a vocal signal is provided, the method including: extracting a difference signal between an input left signal and an input right signal of a stereo signal; obtaining left panning information of the input left signal from the input left signal, and right panning information of the...

Wireless audio frequency playing apparatus and wireless playing system using the same
09/06/12 - 20120224698 - The wireless audio frequency playing apparatus includes a digital broadcasting chip, an amplifier, and a speaker. Two-way communication is processed between the digital broadcasting chip and the wireless remote controller. A content of the digital radio broadcasting program includes audio, text, images, binary data or video. The wireless audio frequency...

Graphical audio signal control
08/09/12 - 20120201385 - Signal processing section of a terminal converts acquired audio signals of a plurality of channels into frequency spectra set, calculates sound image positions corresponding to individual frequency components, and displays, on a display screen, the calculated sound image positions results by use of a coordinate system having coordinate axes of...

Detection of audio channel configuration
08/02/12 - 20120195433 - For an audio file that includes multiple channels of audio data, a novel device for detecting the configuration of the audio channels in the multi-channel audio file is presented. The device performs one or more algorithms to determine whether two or more channels are related. Such algorithms are used to...

Systems and methods for stereo echo cancellation
07/05/12 - 20120170755 - Acoustic echoes in communications systems are distracting and undesirable. Acoustic echoes occur in communications systems where sound produced by a speaker is picked up by a microphone in a communications system. In a stereo playback environment, echo cancellation techniques become more complicated. Echo cancellation can be performed by performing echo...

System, method, and apparatus for conveying a signal to one or more devices
06/14/12 - 20120148052 - A wire system comprising a splitter integrated between two wire portions. The wire system can be used to transmit a signal between a signal source and a first output device connected to the wire portions. At any time, a user can choose to couple one or more additional output devices...

Directional sound system
06/14/12 - 20120148053 - A directional sound system is disclosed. The directional sound system (400) comprises a plurality of equalization stages (404, 406) configured to equalize an input signal; and a transducer stage (412) configured to transmit the equalized input signal; wherein the plurality of equalization stages (404, 406) comprises a first equalization stage...

Apparatus, method, and program product for presenting moving image with sound
03/29/12 - 20120076304 - According to one embodiment, an apparatus for presenting a moving image with sound includes an input unit, a setting unit, a main beam former unit, and an output control unit. The input unit inputs data on a moving image with sound including a moving image and a plurality of channels...

Signal processing method, encoding apparatus using the signal processing method, decoding apparatus using the signal processing method, and information storage medium
02/09/12 - 20120033816 - Provided is a signal processing method for processing a bitstream, an information storage medium including the bitstream, an encoding apparatus, and a decoding apparatus. The signal processing method includes: receiving a bitstream including additional information; extracting first information which is information associated with extraction of the additional information and is...

Audio stream transmission apparatus, audio stream reception apparatus, and transmitting and receiving method thereof
12/22/11 - 20110311057 - A single audio service includes a plurality of audio sources, which may be classified by type. The classified audio sources having a same type may be multiplexed together to form audio streams, which may be amplified to obtain a desired audio environment....

Flameless candle with multimedia capabilities
12/08/11 - 20110299689 - A flameless candle having speaker and lighting capability is provided. Multiple of such flameless candles can be used in a system to generate stereo or surround sound, as well as various lighting modes. The flameless candle or flameless candle system can have AM/FM radio functions, clock functions, alarm functions, etc.,...

Talk-through listening device channel switching
10/27/11 - 20110261965 - A talk-through system for hearing protectors such as headphones, helmets, earplugs and the like, in which separate left and right microphones are controlled by separate left and right switches. The microphones allow ambient sound to be heard by the wearer of the hearing protector, and normally the wearer hears audio...

Method and apparatus for applying reverb to a multi-channel audio signal using spatial cue parameters
10/27/11 - 20110261966 - A method and system for applying reverb to an M-channel down-mixed audio input signal indicative of X individual audio channels, where X is greater than M. Typically, the method includes steps of: in response to spatial cue parameters indicative of spatial image of the downmixed input signal, generating Y discrete...

Adaptive high fidelity reproduction system
09/15/11 - - Audio is adaptively associated with speakers, depending on the speaker configuration that is present. Each speaker it receives an audio assignment based on its individual spectral characteristics. As more speakers are added, content is adaptively associated with that you speaker, and taken away from the previous....

Channel compression
09/08/11 - 20110216905 - Techniques implemented as systems, methods, and apparatuses, including computer program products, for logging multi-channel audio signals. The techniques include receiving a first audio input signal over a first audio channel and a second audio input signal over a second audio channel, the first audio channel and the second audio channel...

Vehicle entertainment system having ground noise reduction and method of operating the same
08/25/11 - 20110206208 - A vehicle entertainment system and method that alternately configures an input of the entertainment system as a differential input that is decoupled from a ground point, or as ground referenced input that is coupled to a ground point. A noise detector determines a noise signal value for a ground switch...

Apparatus
08/25/11 - 20110206209 - An apparatus configured to determine at least one current phase difference between a first channel audio signal and a second channel audio signal for a current audio frame, calculate at least one phase difference estimate dependent on the at least one phase difference, determine a reliability value for each phase...

Method for enlarging a location with optimal three dimensional audio perception
08/04/11 - 20110188660 - There is provided a method for enlarging a location with optimal three-dimensional audio perception. Optimal three-dimensional audio perception may relate to a fully spatial sound effect. The method includes deriving three-dimensional encoded localization cues from an audio input signal having a first channel signal and a second channel signal; decoding...

Apparatus and method for a complete audio signal
06/30/11 - 20110158413 - The present invention relates to an apparatus and method for redeeming otherwise closed and concealed information contained in audio signals. An active circuit balances the ratio between in-phase and out-of-phase signals through the application of sum and difference signals and adjusts the ratio of gain in stereophonic signals as well...

Signal processing method and apparatus
06/23/11 - 20110150227 - Provided is a signal processing method which calculates a correlation coefficient indicating the degree of relation in a stereo signal and extracts a speech signal from the stereo signal by using the correlation coefficient and the stereo signal....

Apparatus of generating multi-channel sound signal
05/19/11 - 20110116638 - An apparatus of generating a multi-channel sound signal is provided. The apparatus may include a sound separator to determine a number (N) of sound signals based on at least one of a mixing characteristic and a spatial characteristic of a multi-channel sound signal when receiving the multi-channel sound signal, and...

2.1 crossover equalization in pc audio applications
04/14/11 - 20110085668 - Challenges to the implementation of equalization in the 2.1 environment arise from the constraints imposed by HD audio requirements and Windows® Vista™. A hybrid software hardware solution overcomes many of the challenges by exploiting the software capability for equalization and using a hardware codec to perform the separation into high...

Audio jack with emi shielding
04/07/11 - 20110081022 - An audio jack for an audio plug for use in an electrical device, comprising a non-conductive enclosure having a front side and defining a cavity having an aperture within the front side for receiving the audio plug, the aperture having a first diameter, the cavity extending along a longitudinal axis;...

Data processing apparatus and parameter generating apparatus applied to surround system
03/17/11 - 20110064228 - Calculation is performed for sound paths 112-1, 114-1 along which sounds emitted from a sound emitting point 104 in an acoustic space 102 are reflected and delivered to a sound receiving point 106. By the calculation, entering angles eR1, eR2 by which the sound paths enter the front side 106a...

Audio signal decoding device and balance adjustment method for audio signal decoding device
03/17/11 - 20110064229 - Fluctuation in decoded signal localization is suppressed to maintain the feel of stereo. A selection unit (220) selects balance parameters when the balance parameters are input from a gain coefficient decoding unit (210), or selects balance parameters input from a gain coefficient calculation unit (223) when there is no balance...

Method and apparatus for encoding and decoding stereo audio
03/03/11 - 20110051935 - A method of encoding stereo audio that minimizes a number of pieces of side information required for parametric-encoding and parametric-decoding of the stereo audio. The side information may include parameters about interchannel intensity difference (IID), interchannel correlation (IC), overall phase difference (OPD), and interchannel phase difference (IPD), which are required...

Audio output device and audio output method
02/03/11 - 20110026717 - An audio output device includes: a speaker unit including at least first to third speakers; and an audio signal processor configured to select either one of a first mode for outputting a stereo audio signal from the first and second speakers and a second mode for outputting a monaural audio...

Virtualizer with cross-talk cancellation and reverb
02/03/11 - 20110026718 - Audio loudspeaker and headphone virtualizers and cross-talk cancellers and methods use separate virtual speaker locations for different Bark frequency bands and a single reverberation filter for multi-channel virtualizer inputs....

Apparatus and method for sound enhancer
01/27/11 - 20110019828 - Apparatuses, methods, and systems directed to enhancing sound quality in audio signal transmissions. Some embodiments of the present invention comprise an audio signal processor operable to boost one or more frequency components of an input signal. In one embodiment, the audio signal processor boosts three frequency components comprising frequency bands...

Method for encoding and decoding multi-channel audio signal and apparatus thereof
12/09/10 - 20100310079 - Methods and apparatuses for encoding and decoding a multi-channel audio signal are provided. In the encoding method, spatial information is calculated based on a multi-channel audio signal and a down-mix signal, and a compensation parameter that compensates for the down-mix signal is calculated based on the multi-channel audio signal and...

method and an apparatus for processing a signal
12/02/10 - 20100303243 - A method of processing a signal is disclosed, which includes receiving a downmix signal, object information and rendering information; and generating downmix processing information using the object information and the rendering information, the object information including modified object level information, wherein the modified object level information is determined using a...

Signal processing apparatus
11/18/10 - 20100290628 - A signal processing apparatus is provided. The signal processing apparatus comprises: an inputting section for inputting audio signals on a plurality of channels; an acoustic type acquiring section which is adapted to acquire an acoustic type of an audio signal on at least one channel of the audio signals; and...

Receiving apparatus
11/11/10 - 20100284541 - A receiving apparatus comprising: a frequency conversion unit configured to convert a received radio frequency signal to an intermediate frequency signal; an automatic gain control unit configured to control an amplitude level of at least either one of the radio frequency signal and the intermediate frequency signal according to a...

Matrix decoder
11/11/10 - 20100284542 - This audio matrix surround decoder requires minimal digital processing, useful in portable applications, particularly in playback from a portable player using a headphone or loudspeaker virtualizer. In one embodiment it pans inputs Lt and Rt to outputs associated with front directions in response to a measure of the sum of...

Apparatus and method for generating binaural beat from stereo audio signal
09/23/10 - 20100239096 - An apparatus and method for generating a binaural beat for brainwave induction is provided. Upon receipt of a stereo audio signal, a decorrelator extracts a common component existing in common in both channels of the stereo audio signal, and outputs the remaining stereo components except for the extracted common component....

Device, method, program, and system for canceling crosstalk when reproducing sound through plurality of speakers arranged around listener
09/16/10 - 20100232609 - In an audio signal processing device, a signal input part receives a plurality of audio signals to be provided to a plurality of speakers, respectively, arranged so as to surround a listener, the speakers including a center speaker, a left speaker and a right speaker. A signal processing part adds...

Audio apparatus and audio processing method
09/09/10 - 20100226498 - The present invention provides an audio apparatus including: a decoding device configured to decode results of channel-by-channel reproduction of a multichannel sound source made up of at least a left channel, a right channel, and a center channel, and to down-mix the decoded results of channel-by-channel reproduction in accordance with...

Low frequency management for multichannel sound reproduction systems
09/02/10 - 20100220864 - The present invention relates generally to sound reproduction systems and methods and more specifically to the reproduction of low-frequency signal components recorded in a Low Frequency Effects (LFE) channel. According to the invention there is provided a system comprising: n input channels (1, 2, 3) for receiving in multichannel sound...

Method and system for enhancing bass effect in audio signals
08/19/10 - 20100208899 - The quality of music output from audio systems is improved by simulating the effect of low frequency signals in the human ear. This thus allows listeners to perceive the lower frequency signals, even though the speakers may be incapable of providing such low frequency outputs. A method is provided for...

Audio device
07/08/10 - 20100172505 - A signal processing section 3 is set up which provides an anti-phase component signal S extracted by an anti-phase component extracting section 2 with a transfer characteristic (Hd+Hx)/(Hd−Hx); an adder 4 adds the phase-inverted signal of the anti-phase component signal S provided with the transfer characteristic by the signal processing...

Device for and a method of processing an audio signal
07/01/10 - 20100166190 - A device for processing an audio signal, wherein the device comprises a detection unit adapted for detecting a widening state of the audio signal, and a widening modification unit adapted for modifying a widening characteristic of the audio signal depending on the detected widening state of the audio signal....

Method and apparatus for conversion between multi-channel audio formats
07/01/10 - 20100166191 - An input multi-channel representation is converted into a different output multi-channel representation of a spatial audio signal, in that an intermediate representation of the spatial audio signal is derived, the intermediate representation having direction parameters indicating a direction of origin of a portion of the spatial audio signal; and in...

Digital audio stereo imager
06/24/10 - 20100158257 - An apparatus and a method for controlling, during playback, the composition of a pair of stereo separated audio signals in a stereo sound entertainment system by changing the stereo image width are disclosed. A digital mixer combines a portion of a first digital audio signal with a portion of a...

System and method for generating multichannel audio with a portable electronic device
04/22/10 - 20100098258 - An electronic device manipulates a digital video having a video portion and an audio portion to encode the audio portion into a multichannel format. The electronic device may include an audio receiver for receiving the audio portion, and an image analyzer for receiving the video portion and determining at least...

Audio enhancement system
04/22/10 - 20100098259 - A stereo enhancement system processes the difference signal component generated from a pair of left and right input signals to create a broadened stereo image reproduced through a pair of speakers or through a surround sound system. Processing of the difference signal component occurs through equalization characterized by amplification of...

Integrated vehicle audio system
04/15/10 - 20100091997 - A loudspeaker, amplifier, media source, user interface, and mechanical interface are all contained in a single unit. The unit has a first portion configured to mount in a vehicle radio mounting location and a second portion configured to extend significantly outside the vehicle radio mounting location....

Recorder and recording method
03/25/10 - 20100074449 - A recorder can record multichannel audio signals by switching one of multiple types of microphones to another. The microphones include first and second types of microphones for first and second numbers of channels. One of the first and second types is removable from and attachable to the recorder. The recorder...

Device for and a method of processing audio data
12/24/09 - 20090316912 - A device (500) for processing audio data (102) comprises an envelope detector (101) for detecting an envelope of the audio data (102) and a frequency generator (103) for generating an oscillation signal (104) oscillating at a predetermined frequency, wherein the frequency generator (103) is coupled to the envelope detector (101)...

Sound processing device, speaker apparatus, and sound processing method
12/10/09 - 20090304186 - A sound processing device includes an inputting section which inputs L-ch audio data and R-ch audio data, a delaying section which applies a delaying process to the L-ch audio data and the R-ch audio data for a delay time that is set in a range from 62.5 microsecond to 125...

Method and apparatus for improving audio reproduction for a portable electronic device
11/19/09 - 20090285403 - The present invention discloses an audio signal processing device capable of transmitting at least one audio signal generated by an audio decoder to at least one first speaker and a second speaker. The audio signal processing device includes a signal mixer and at least one filter. By the at least...

Audio system
11/05/09 - 20090274307 - Disclosed is an audio system including a group of loudspeakers that form a sound field by delivering into a single space sound signals passed through respective ones of a plurality of sound signal channels. This audio system is comprised of two characteristic-variable equalizers that are cascaded to each other to...

Multi-channel decoding systems capable of reducing noise and methods thereof
10/08/09 - 20090252337 - A multi-channel decoding method includes: receiving an input signal to generate a first channel output signal and a second channel output signal, wherein the input signal is mixed with a specific clock signal; and gradually changing an amplitude of the specific clock signal from a first value to a second...

Adaptive high fidelity reproduction system
10/01/09 - 20090245523 - Audio is adaptively associated with speakers, depending on the speaker configuration that is present. Each speaker it receives an audio assignment based on its individual spectral characteristics. As more speakers are added, content is adaptively associated with that you speaker, and taken away from the previous....

Detecting stereo and mono headset devices
07/09/09 - 20090175456 - The present invention includes apparatuses and methods comprising a means for detecting the presence of speakers and microphones coupled to a portable multi-function device (such as Apple's iPhone™). In response, a portable multi-function device can adapt its output depending on the nature of the coupled headset device. In particular, a...