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7620554 |
Multichannel audio extension
A method is shown for supporting a multichannel audio extension at an encoding end of a multichannel audio coding system. In order to improve the audio quality over a large frequency range, the...
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7616767 |
Method and device for determining acoustical transfer impedance
The method comprises generating an acoustical volume velocity Q in the listening position, measuring a response quantity p, such as sound or vibration, at a suspected source position resulting from...
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7613305 |
Method 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...
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7602921 |
Sound image localizer
The present invention relates to a sound image localizing apparatus for generating a sound image localized in an arbitrarily set three-dimensional direction. The sound image direction setting unit...
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7599498 |
Apparatus and method for producing 3D sound
Disclosed herein is an apparatus for producing 3D sound. The apparatus includes a determination unit, a mono sound spreading unit, a stereo sound spreading unit, a selection unit, and a 3D sound...
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7593533 |
Sound 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...
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7590248 |
Head related transfer function filter generation
A method for generating a head related transfer function comprises downconverting each of a plurality of measured impulse responses from a first sampling frequency to a second sampling frequency...
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7583805 |
Late reverberation-based synthesis of auditory scenes
A scheme for stereo and multi-channel synthesis of inter-channel correlation (ICC) (normalized cross-correlation) cues for parametric stereo and multi-channel coding. The scheme synthesizes ICC...
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7580375 |
Scalable moderated audio conferencing for multicast and unicast endpoints and gateways
Providing a conference call includes establishing a bidirectional first class stream for each of a set of first class endpoints. A second class stream is established for each of a set of second...
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7567675 |
System and method for automatic multiple listener room acoustic correction with low filter orders
A system and a method for correcting, simultaneously at multiple-listener positions, distortions introduced by the acoustical characteristics includes warping room responses, intelligently weighing...
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7558393 |
System and method for compatible 2D/3D (full sphere with height) surround sound reproduction
A system and method of producing an output sound field that is representative of an input sound field compatible with both existing prior art sound reproduction systems, for example ITU 5.1/6.1,...
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7551741 |
System and method for 3D sound processing
A system for 3D sound processing. The system includes a first processing section including a first left lattice filter and a first right lattice filter, respectively electrically connected to a...
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7542815 |
Extraction of left/center/right information from two-channel stereo sources
A digital audio signal processing system and method transforms two-channel stereo time-domain data into the frequency domain. Vector operations are performed upon the frequency-domain data by which...
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7542574 |
Generation of customised three dimensional sound effects for individuals
A system for customising the synthesis and generation of spatial hearing in virtual auditory space (VAS) for individual listeners includes a measuring ruler ( 12 ) and a digital processing unit...
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7536017 |
Cross-talk cancellation
Audio cross-talk cancellation by inverse HRTF matrix only for low frequencies; high frequencies rely upon the natural barrier of a listener's head. The low frequency cutoff is determined by a peak...
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7508947 |
Method for combining audio signals using auditory scene analysis
A process for combining audio channels combines the audio channels to produce a combined audio channel and dynamically applies one or more of time, phase, and amplitude or power adjustments to the...
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7505601 |
Efficient spatial separation of speech signals
A computationally efficient method and device for adding spatial audio capabilities to new and existing centrally switched communication systems without modifying the internal operation of the...
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7502477 |
Audio reproducing apparatus
A distributing circuit distributes audio signals of a predetermined number of channels to audio signals of a predetermined number of channels. A first signal processing circuit processes audio...
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7492906 |
Speaker-characteristic method and speaker reproduction system
To date, there has been no speaker-characteristic compensation method including a processing step of reducing crosstalk between speakers incorporated in a mobile terminal. Accordingly, it has been...
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7475014 |
Method and system for tracking signal sources with wrapped-phase hidden markov models
A method models trajectories of a signal source. Training signals generated by a signal source moving along known trajectories are acquired by each sensor in an array of sensors. Phase differences...
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7466831 |
Audio processing
The present invention relates to audio signal processing such as equalisation and spatial enhancement functions. The present invention provides an audio signal processing circuit arrangement for...
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7463740 |
Sound data processing apparatus for simulating acoustic space
A data processing apparatus is designed for simulating an acoustic characteristic of an acoustic space which contains a sound source for generating a sound and a sound receiving point for receiving...
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7463170 |
Method and system for processing multi-rate audio from a plurality of audio processing sources
An audio codec in a wireless device may be utilized for up sampling two or more audio signals to a same data sampling rate. Each audio signal, such as digital audio, voice, and polyringer, for...
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7457421 |
Circuit and program for processing multichannel audio signals and apparatus for reproducing same
A circuit for processing multichannel audio signals, comprises a frequency characteristics correction device and an output device. The frequency characteristics correction device corrects frequency...
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7454026 |
Audio image signal processing and reproduction method and apparatus with head angle detection
Input digital sound signals are subjected to filtering for convolution of respective impulse responses, and the resulting signals are supplied to time delay setting circuits. In each of the time...
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7447317 |
Compatible multi-channel coding/decoding by weighting the downmix channel
In processing a multi-channel audio signal having at least three original channels, a first downmix channel and a second downmix channel are provided, which are derived from the original channels....
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7440578 |
Vehicle-mounted three dimensional sound field reproducing silencing unit
A vehicle-mounted three dimensional sound signal reproducing•silencing unit includes at least two speakers disposed for each of seats to be occupied by listeners so as to generate a three...
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7440575 |
Equalization of the output in a stereo widening network
The invention relates to a method, signal processing device and computer program for stereo widening (SW) of stereo format signals to become suitable for headphone listening. The invention also...
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7433479 |
Headphone apparatus
A headphone apparatus is presented so that a sound image of game sound outputted from an on-line game machine having a communication function is localized at one or more positions out of the head...
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7428308 |
Transmitting and reproducing stereophonic audio signals
Apparatus and method for transmitting and reproducing stereophonic audio signals are disclosed. The method comprises splitting first and second channels into two frequency bands, combining the...
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7424121 |
Audio signal processing method and audio signal processing apparatus
An audio signal processing method that performs virtual acoustic image localization processing for sound source signals having at least one type of information among position information, movement...
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7415123 |
Method and apparatus for producing spatialized audio signals
A method and apparatus for producing virtual sound sources that are externally perceived and positioned at any orientation in azimuth and elevation from a listener is described. In this system, a...
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7412380 |
Ambience extraction and modification for enhancement and upmix of audio signals
Modifying an audio signal comprising a plurality of channel signals is disclosed. At least selected ones of the channel signals are transformed into a time-frequency domain. The at least selected...
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7412220 |
Signal processing
Signal processing apparatus produces an audio signal suitable for conveying a psychoacoustic perception of a low frequency audio signal to a listener, the apparatus generates harmonics of the low...
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7400734 |
Method and apparatus for emulating audio effect
The present invention provides an apparatus and a method for emulating audio. The apparatus comprises an echo device, a reverberation device, an audio source device and a first signal synthesizer....
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7394903 |
Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal
The apparatus for constructing a multi-channel output signal using an input signal and parametric side information, the input signal including the first input channel and the second input channel...
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7391877 |
Spatial processor for enhanced performance in multi-talker speech displays
Optimal head related transfer function spatial configurations designed to maximize speech intelligibility in multi-talker speech displays by spatially separating competing speech channels combined...
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7391876 |
Method and system for simulating a 3D sound environment
The invention provides a method for simulating a 3D sound environment in an audio system using an at least two-channel reproduction device, the method including generating first and second pseudo...
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7391869 |
Base management systems
Sound processing systems have been developed that create a surround effect without quality degradation experienced by known sound processing systems in non-optimum listening environments. The sound...
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7386140 |
Audio information transforming method, audio information transforming program, and audio information transforming device
The present invention provides an audio information transforming device, an audio information transforming method, and an audio information transforming program, which are capable changing a...
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7386139 |
Sound image control system
A sound image control system which is able to concurrently perform sound image localization control for two persons is provided. The sound image control system controls a sound image localization...
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7386133 |
System for determining the position of a sound source
A method and system for determining the position of a sound source in relation to a reference position, comprising the steps of generating a sound signal emitted from the sound source, detecting...
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7382885 |
Multi-channel audio reproduction apparatus and method for loudspeaker sound reproduction using position adjustable virtual sound images
A multi-channel audio reproduction apparatus and method for loudspeaker reproduction using virtual sound images whose positions can be adjusted is provided. The multi-channel audio reproduction...
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7366312 |
Artificial stereophonic circuit and artificial stereophonic device
An artificial stereophonic circuit which includes a monophonic signal input terminal, a signal output terminal of one of an L channel and an R channel which are connected to the signal input...
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7356152 |
Method for expanding an audio mix to fill all available output channels
Audio sources in typical computer systems provide different numbers of channels of audio signals to a mixing component of the operating system. This conventional arrangement usually prevents the...
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7346172 |
Auditory alert systems with enhanced detectability
Methods and systems for distinguishing an auditory alert signal from a background of one or more non-alert signals. In a first embodiment, a prefix signal, associated with an existing alert signal,...
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7340272 |
Mobile communication terminal having a three-dimensional surround sound effect and its control method
A mobile communication terminal with three-dimensional surround-sound effect system has a data processing section for coding and modulating a transmitting signal or demodulating and decoding a...
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7340062 |
Sound reproduction method and apparatus for assessing real-world performance of hearing and hearing aids
A sound recording and reproduction system for testing hearing and hearing aids is disclosed. Recordings of sound are made in a real word acoustic environment, for example, which are stored as audio...
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7336792 |
Virtual acoustic image localization processing device, virtual acoustic image localization processing method, and recording media
An acoustic image localization processing device that can localize an acoustic image of reproduced sound in an arbitrary position according to the circumstances of reproduction. To accomplish this,...
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7330552 |
Multiple positional channels from a conventional stereo signal pair
A method and system accept left and right channel inputs of audio data and provide output audio data for at least three channels in a fashion that may effect a facsimile of the original soundstage...
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