Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 8116458 | Acoustic image localization apparatus, acoustic image localization system, and acoustic image localization method, program and integrated circuit An acoustic image localization apparatus according to the present invention that outputs sound from a plurality of speakers so as to localize an acoustic image at a predetermined position on a space as viewed from a listener, the acoustic image localization apparatu... | 02/14/2012 |
| 7995767 | Sound signal processing method and apparatus A sound signal processing method includes calculating a difference between every few ones of input multiple channel sound signals to obtain a plurality of characteristic quantities each indicating the difference, selecting a weighting factor from a weighting factor ... | 08/09/2011 |
| 7978860 | Playback apparatus and playback method A playback apparatus includes a forming section which, on the basis of an audio signal to be played back, forms audio signals on a plurality of channels for emitting sounds from a pair of sound sources, and a signal processing section which, on each of the audio sig... | 07/12/2011 |
| 7894611 | Spatial disassembly processor Two-channel input audio signals are processed to construct output audio signals by decomposing the two-channel input audio signals into a plurality of two-channel subband audio signals. Separately, in each of a plurality of subbands, at least three generated subband... | 02/22/2011 |
| 7706544 | Audio reproduction system and method for reproducing an audio signal An audio reproduction system is divided into a central wave-field synthesis module and a plurality of loudspeaker modules disposed in a distributed way, wherein synthesis signals for the individual loudspeakers as well as corresponding channel information associated... | 04/27/2010 |
| 7630500 | Spatial disassembly processor A method of disassembling a pair of input signals L(t) and R(t) to form subband representations of N output channel signals o1(t), o2(t), . . . , oN(t), wherein t is time. The method includes the steps of generating a subband represe... | 12/08/2009 |
| 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 reproduction surface having a predetermined width, and with regard to... | 10/20/2009 |
| 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 with spatial harmonics that substantially exactly match those of the ori... | 10/20/2009 |
| 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 transducers such that a desired sound field is created. This sound fiel... | 04/07/2009 |
| 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 multi-channel audio signals comprise a pair of front signals intended ... | 02/17/2009 |
| 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 relates to a mobile appliance performing signal processing according to ... | 10/21/2008 |
| 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 lower frequency band signals of the two channels, and transmitting the co... | 09/23/2008 |
| 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 information, and localization information based on this information t... | 09/09/2008 |
| 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 frequency signal by shaping the waveform of the low frequency signal w... | 08/12/2008 |
| 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. Wherein, the echo device receives an audio source signals and applies... | 07/15/2008 |
| 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 (31 to 3N) is characterised in comprising: a step for establishing a finite number of coefficients representati... | 07/01/2008 |
| 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 derived from an original multi-channel signal, and the parametric side... | 07/01/2008 |
| 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 channels. In particular, the apparatus includes a cancellation channel... | 06/24/2008 |
| 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 processing systems may include matrix decoding systems that manipula... | 06/24/2008 |
| 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 listening point freely only by one audio stream and also achieving multiple... | 06/10/2008 |
| 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 sound reproduction system which enhances the correlated component of the ... | 06/10/2008 |
| 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 apparatus includes a virtual sound image forming unit for compensating f... | 06/03/2008 |
| 7369666 | Audio reproducing system High and low frequency components Cn1, Cn2 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 component Cn1 is supplied to the center cha... | 05/06/2008 |
| 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 is directed, a direction dependent filtering arrangement (306,... | 05/06/2008 |
| 7369665 | Method and apparatus for mixing sound signals A system and method for mixing sound signals is provided in which a mixer buffer stores sample values for three or more sound channels, each sound channel including a main sound component and one or more auxiliary sound components. Send paths are provided for sendin... | 05/06/2008 |
| 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 terminal, a phase-shifting circuit having an input side connected to the si... | 04/29/2008 |
| 7363497 | System for distribution of recorded content A method and system to acquire, digitize, store, and deliver live content, such as music, to an end user via a network. The system can capture live content directly into a portable audio format which can be encoded at various levels of resolution into a file. The en... | 04/22/2008 |
| 7359522 | Coding of stereo signals A method of encoding a multi-channel signal having first and second signal components includes determining a set of filter parameters a prediction filter such that the prediction filter provides an estimate of the second signal component when receiving the first sig... | 04/15/2008 |
| 7343210 | Interactive digital medium and system The present invention relates to manipulating audio and/or video recordings, particularly music recordings, by giving a user access to individual master tracks and/or channels that make up the recording, that he or she previously did not have access to. The master t... | 03/11/2008 |
| 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 signals. In a testing environment, a plurality of loudspeakers is lo... | 03/04/2008 |
| 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, an acoustic image localization processing device includes a decoder ... | 02/26/2008 |
| 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 on which the left and right inputs were recorded. ... | 02/12/2008 |
| 7319760 | Apparatus for creating sound image of moving sound source In a sound image creating apparatus, a distance computation section computes intermediate positions of a moving point along a trajectory line from a movement start position to a movement end position, and further computes a variable distance between each of the inte... | 01/15/2008 |
| 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 by utilising one or more digital signal modifiers within the signal p... | 01/15/2008 |
| 7318141 | Methods and systems to control virtual machines Methods and systems are provided to control the execution of a virtual machine (VM). A VM Monitor (VMM) accesses VM Control Structures (VMCS) indirectly through access instructions passed to a processor. In one embodiment, the access instructions include VMCS compon... | 01/08/2008 |
| 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 control region. When operating in the first control region, a first set o... | 12/04/2007 |
| 7295809 | Portable audio playback device with bass enhancement Wirelessly linking a portable audio device to an external audio system permits the external audio system to generate audible signals that enhance local playback of audio by the portable device. For example, the portable device wirelessly transmits lower frequency co... | 11/13/2007 |
| 7292901 | Hybrid multi-channel/cue coding/decoding of audio signals Part of the spectrum of two or more input signals is encoded using conventional coding techniques, while encoding the rest of the spectrum using binaural cue coding (BCC). In BCC coding, spectral components of the input signals are downmixed and BCC parameters (e.g.... | 11/06/2007 |
| 7292697 | Audio reproducing system High and low frequency components Cn1, Cn2 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 component Cn1 is supplied to the center cha... | 11/06/2007 |
| 7289633 | System and method for integral transference of acoustical events A sound system for capturing and reproducing sounds produced by a plurality of sound sources. The system comprises a device for receiving sounds produced by the plurality of sound sources and converting the separately received sounds to a plurality of separate audio... | 10/30/2007 |
