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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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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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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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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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7564982 |
Two channel audio surround sound circuit
A two channel surround sound audio circuit (surround sound circuit) includes a first amplifier, a second amplifier, two polarized input capacitors, and two polarized output capacitors. A first...
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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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7522733 |
Systems and methods of spatial image enhancement of a sound source
Reproduction of stereophonic audio information over a single speaker requires summing multiple stereo channels. When signals having approximately equal magnitudes and approximately opposite phases...
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7515935 |
Method and system for flexible FM tuning
A method and system for flexible FM tuning are provided and may include tuning to a particular frequency within a range of FM channels based on an IF frequency that includes an integer multiple of...
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7512246 |
Stereo sounding method, stereo sounding system, and musical tone generation control system
A stereo sounding method which can provide realistic sounds such as stereo sounds for a large number of listeners while reducing the number of speakers. A stereo sounding system is comprised of a...
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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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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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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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7460676 |
Headphone driving circuit
This invention may provide a headphone driving circuit needless of coupling condenser even if the power supply supplies a single output voltage. The headphone driving circuit comprises (1) a first...
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7460673 |
Point source speaker system
The system of the present invention includes, briefly, a point source speaker system, comprising a processor which produces a left minus right (L−R) audio signal, a right plus left (R+L) and a...
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7443987 |
Discrete surround audio system for home and automotive listening
A sound processing system increases the robustness of surround sound in various playback situations. The system may process an incoming signal, such as a five channel surround sound signal, with a...
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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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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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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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7388959 |
Harmonic generator and pre-amp
A Harmonic Generator for audio applications and a Pre-Amplifier circuit are combined to form a Harmonic Generator and Pre-Amplifier circuit. The Harmonic Generator is formed from a Buffer Circuit...
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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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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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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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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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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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7327848 |
Visualization of spatialized audio
A method and apparatus is provided for presenting a user with a visual indication of the likely user-perceived location of sound sources in an audio field generated from left and right audio...
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7302061 |
Dual-tweeter loudspeaker
A dual tweeter speaker, wherein the tweeters are spaced far apart, is provided. The loudspeaker system includes a woofer and two tweeters, which are arranged so they reduce interference with sound...
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7272073 |
Method and device for generating information relating to the relative position of a set of at least three acoustic transducers
The invention relates to a method and device for generating data about the mutual position of at least three acoustic transducers. The aim of the invention is to make it possible to continuously...
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7263193 |
Crosstalk canceler
The invention is a crosstalk canceler wherein different frequency bands are canceled at different locations so as to allow greater listener movement about the “sweet spot” while maintaining...
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7254239 |
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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7254238 |
Method and circuit for headset listening of an audio recording
The invention concerns a circuit for adapting the signals from different channels (L, R) delivered by an audio reproduction system ( 10 ) in conditions specific to headset listening. It comprises:...
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7251333 |
Method and apparatus for creating a virtual third channel in a two-channel amplifier
A method and apparatus for creating a third signal channel from an input signal received in each of a first and second channel involves inverting a predetermined frequency range of signals in the...
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7242782 |
Audio signal processing circuit
An audio signal processing circuit for an audio reproduction apparatus at least having sound source located substantially at left and right sides to a listener, is provided. The audio signal...
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7218240 |
Synthetically generated sound cues
Communication systems and apparatus to allow a user to perceive the relative spatial location or present position of other elements of interest in a control space, such as the location of a speaker...
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7203320 |
Sub-harmonic generator and stereo expansion processor
Methods and apparatus may provide for one or more of: receiving an input signal containing frequencies from among a first range; filtering the input signal to produce a first intermediate signal...
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7177431 |
Dynamic decorrelator for audio signals
A system and method are described for rendering a left rear surround input signal at a left rear virtual speaker location and rendering a right rear surround input signal at a right rear virtual...
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7171002 |
Methods and apparatus for sub-harmonic generation, stereo expansion and distortion
Methods and apparatus are disclosed that achieve sub-harmonic signal processing, stereo-width expansion, sub-woofer signal processing, and tube distortion emulation to achieve various desirable...
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7167879 |
Network AV system
An uploader transmits to a server a request start notification indicating the start of a registration request and then transmits to the server a plurality of registration requests for pieces of...
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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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7146018 |
Multichannel acoustic signal reproducing apparatus
A system reproducing surround phonic sound is simply constructed by a multichannel acoustic signal reproducing apparatus having at least a DVD reproducing section. A DVD, a CD, a radio or the like...
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7146010 |
Two methods and two devices for processing an input audio stereo signal, and an audio stereo signal reproduction system
The present invention relates to methods and devices for processing one or the other of two types of common input audio stereo signals so that the output signals will reproduce normally wide stereo...
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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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7088827 |
Reconfigurable speaker system
A reconfigurable speaker system for producing sound in response to at least one of right and left channel audio signals generated by an audio source. The speaker system can be configured by the...
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7085393 |
Method and apparatus for regularizing measured HRTF for smooth 3D digital audio
The present invention provides an improved HRTF modeling technique for synthesizing HRTFs with varying degrees of smoothness and generalization. A plurality N of spatial characteristic function...
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7079658 |
System and method for localization of sounds in three-dimensional space
A system and method for localization of sounds in 3-D space using Head Related Transfer Functions (HRTFs) are disclosed herein. A plurality of audio signals and/or sound sources, or “voices”,...
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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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7072474 |
Sound recording and reproduction systems
Sound recordings are played through a closely-spaced pair of loudspeakers with a predetermined listener position having an included angle of between 6° and 20°, and filter means being employed in...
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