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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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7606373 |
Multi-channel surround sound mastering and reproduction techniques that preserve spatial harmonics in three dimensions
Techniques of making a recording of or transmitting a sound field from either multiple monaural or directional sound signals that reproduce through multiple discrete loud speakers a sound field...
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7606372 |
Device and method for determining a reproduction position
A method and device are provided for determining a reproduction position of a source of sound for audio-visual reproduction of a film scene from a plurality of individual pictures with regard to a...
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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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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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7515719 |
Method and apparatus to create a sound field
The invention generally relates to a method and apparatus for taking an input signal, replicating it a number of times and modifying each of the replicas before routing them to respective output...
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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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7499553 |
Sound event detector system
The beginning detection, accommodation and frequency bias properties of the human hearing mechanism have been modeled to create systems that can detect directional transients (“sound events”)...
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7492908 |
Sound localization system based on analysis of the sound field
The beginning detection, accommodation and frequency bias properties of the human hearing mechanism have been modeled to create systems that can detect directional transients (“sound events”)...
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7492907 |
Multi-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...
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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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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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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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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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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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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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7394904 |
Method and device for control of a unit for reproduction of an acoustic field
Said method for control of a reproduction unit ( 2 ) for an acoustic field with a number of reproduction elements ( 3 1 to 3 N ) is characterised in comprising: a step for establishing a finite...
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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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7391870 |
Apparatus and method for generating a multi-channel output signal
An apparatus for generating a multi-channel output signal performs a center channel cancellation to obtain improved base channels for reconstructing left-side output channels or right-side output...
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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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7386132 |
5-2-5 matrix encoder and decoder system
A sound reproduction system has been developed, for converting signals on two input channels into surround signals on five or seven output channels and vice-versa. A decoder is included in the...
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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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7369668 |
Method and system for processing directed sound in an acoustic virtual environment
An acoustic virtual environment is processed in an electronic device. The acoustic virtual environment comprises at least one sound source ( 300 ). In order to model the manner in which the sound...
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7369666 |
Audio reproducing system
High and low frequency components C n1 , C n2 are generated by causing a center channel audio signal Cn to pass through a high-pass filter HPF and a low-pass filter LPF, and the high frequency...
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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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7319641 |
Signal processing device for acoustic transducer array
The invention provides transducer arrays which are capable of outputting sound beams having a relatively constant width, and with minimal sidelobes, across a range of frequencies. This is achieved...
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7305097 |
Controlling 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...
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7231054 |
Method and apparatus for three-dimensional audio display
This invention addresses sound recording and mixing methods for 3-D audio rendering of multiple sound sources over headphones or loudspeaker playback systems. Economical techniques are provided,...
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7218740 |
Audio system
An automotive in-cabin audio system comprising a plurality of speakers installed at different positions in the cabin is disclosed, in which the playback signal from a multichannel player having...
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7206413 |
Sound processing system using spatial imaging techniques
A sound processing system reduces the instances when only a center speaker is heard. The gain of a volume setting is adjusted for individual speakers in response to one or more input signals. The...
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7190794 |
Audio user interface
An audio “desktop” user-interface is provided in which services are represented by audio labels presented in an audio field through respective synthesized sound sources. A desired service is...
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7177432 |
Sound processing system with degraded signal optimization
A sound processing system adaptively mixes active matrix decoding and passive matrix processing of incoming audio signals. Mixed output signals are generated with active matrix decoding where the...
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7167567 |
Method of processing an audio signal
A method of processing a single channel audio signal to provide an audio source signal having left and right channels corresponding to a sound source at a given direction in space, includes...
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7149313 |
Audio signal processing
A method and apparatus for processing multi-channel audio signals in which the channels are processed by one of alternatively selectable processes to produce an alternatively selectable number of...
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7149068 |
Circuit for controlling the minimum operating voltage of switching power supply
A circuit is provided for controlling a minimum operating voltage of an integrated control circuit of a switching power supply. The circuit includes at least one switch for switching the minimum...
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7123724 |
Sound system
The invention is directed to a sound system with four loudspeakers and at least one signal processing device connected to the input of two loudspeakers and controlled by two input signals. The...
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7099480 |
System for generating sounds
The invention relates to a system for generating sounds with a left front loudspeaker which converts an electric signal of a left audio channel and with a right front loudspeaker which converts an...
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7082201 |
Three-dimensional sound reproducing apparatus and a three-dimensional sound reproduction method
A three-dimensional sound reproducing apparatus is configured by cascading a sound field effect adding unit and a crosstalk canceling unit. The sound field effect adding unit adds a predetermined...
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7076071 |
Process for enhancing the existing ambience, imaging, depth, clarity and spaciousness of sound recordings
A process for enhancing ambience in an audio signal output that is derived from an audio signal input in a dual channel audio ambience extraction circuit. The process includes cross-coupling of...
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7065222 |
Facilitation of clear presentation in audio user interface
An audio user interface is provided in which items are represented in an audio field by corresponding synthesized sound sources from where sounds related to the items appear to emanate. At least...
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7006645 |
Audio reproduction apparatus
A first selector switch outputs a second audio signal of m channel corresponding to a selected second zone to a power amplifier of the m channel and a second selector switch couples output of the...
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7003119 |
Matrix surround decoder/virtualizer
The inventive mechanism uses several sub-systems to generate outputs from the stereo input signal. A first sub-system synthesizes the phantom center output, which places the monaural center image...
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