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| Number | Title | Issue Date |
| 8135151 | Audio signal reproduction device and audio signal reproduction system In an audio signal reproduction device and an audio signal reproduction system of the present invention, an SLch sound is reproduced as a mixed sound that is adjusted appropriately by two speakers 5a, 5d located at Lch and SBLch speaker p... | 03/13/2012 |
| 8126173 | System and method for expanding multi-speaker playback A method includes splitting and filtering a left input signal and a right input signal to produce a plurality of frequency sub-bands. Each of the frequency sub-bands includes a left sub-band signal and a right sub-band signal. The method also includes processing the... | 02/28/2012 |
| 8121318 | Two channel audio surround sound circuit with automatic level control The two channel audio surround sound circuit with automatic level control includes a right amplifier, a left amplifier, a right automatic level control and a left automatic level control. A right input is coupled to a positive input of the left amplifier through the... | 02/21/2012 |
| 8073169 | Controlling fading and surround signal level Preserving an audio signal in an audio system includes selecting a first audio signal from a plurality of audio signals. The first audio signal is applied to a first transducer. Mix a portion of the first audio signal with a second audio signal from the plurality of... | 12/06/2011 |
| 8054998 | Multichannel amplifier In a multichannel amplifier according to the present invention, in a case where a headphone is not connected to a headphone output terminal, a switch IC and first to third switches are on/off controlled by a control unit so that an audio signal path for outputting a... | 11/08/2011 |
| 8027494 | Acoustic image creation system and program therefor With stereophonic sound images of multi-channel audio signals well maintained, 2-channel system audio signals are created. An acoustic image creation system includes: a left-rear localization processing means 2 for outputting a left-rear localization signal b... | 09/27/2011 |
| 7974425 | 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 preferably derives a cancellation signal from the difference between the left ... | 07/05/2011 |
| 7920711 | Audio device and method for generating surround sound having first and second surround signal generation units An audio device capable of easily generating two or more sets of surround signals based on 2-channel stereo signals and a method for generating surround sound are provided. The audio device 100 includes: an SL signal generation section 20 and a BL sign... | 04/05/2011 |
| 7764805 | Apparatus for generating surround signal from two-channel stereo signal To restrict a loss, or a variation in a loudness, of the sound of a rear speaker if the separation of a two-channel stereo signal degrades in a surround device which generates a four-channel surround signal based on a difference component of the two-channel stereo s... | 07/27/2010 |
| 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, and with a three-dimensional reproduction system unique to this disclos... | 07/07/2009 |
| 7545946 | Method and system for surround sound beam-forming using the overlapping portion of driver frequency ranges A method and system for surround sound beam-forming using the overlapping portion of driver frequency ranges provides a low cost alternative to present external surround array systems. The overlapping frequency range of a pair of speaker drivers, generally a low-fre... | 06/09/2009 |
| 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 |
| 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 ones of the channel signals are compared in the time-frequency domain ... | 08/12/2008 |
| 7412067 | Acoustic apparatus and acoustic setting method A setting up operation for connecting a number of speakers can be easily executed by a system in which setups and pattern numbers are stored in a memory. When the user operates an operation input unit and selects an easy setup, a default setting pattern number is re... | 08/12/2008 |
| 7367886 | Gaming system with surround sound An electronic gaming system comprises a gaming terminal and a speaker arrangement. The gaming terminal conducts a wagering game. The speaker arrangement emits audio associated with the wagering game in surround sound relative to a player in front of the gaming termi... | 05/06/2008 |
| 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 |
| 7362874 | Speaker system having a front speaker integrated with a reflection-type surround speaker A surround speaker system according to the present invention includes an integral speaker in which a surround speaker is integrally formed with a front speaker, a canceling device for canceling a directly propagating sound of the surround speaker, and a reflective d... | 04/22/2008 |
| 7350618 | Multimedia speaker product A satellite speaker system includes a side firing low mid driver mounted in a sub-enclosure which is vented into a second sub-enclosure through an acoustic resistance vent and to a third sub-enclosure through a variable aperture second vent. The vents further serve ... | 04/01/2008 |
| 7343020 | Vehicle audio system with directional sound and reflected audio imaging for creating a personal sound stage Automotive audio systems that use directional planar magnetic transducers in a layout or placement configuration to provide direct or reflected audio imaging in stereo or surround sounds for individual passengers of an automotive vehicle with reduced crossed audio i... | 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 |
| 7327235 | Alarm sound outputting device for vehicle and program thereof In a vehicle alarm sound outputting device, in a filter coefficient generator, interpolation of filter coefficients is carried out in accordance with the relative position between a vehicle and an object by using head related transfer functions serving as base data ... | 02/05/2008 |
| 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 |
| 7298852 | Dynamic power sharing in a multi-channel sound system A signal processing system for use in a multichannel audio system. The signal processing system includes a first channel having a first audio signal. A second channel is included that has at least a second audio signal. A processor is included that is responsive to ... | 11/20/2007 |
| 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 |
| 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 |
| 7280667 | Speaker system A speaker system, preferably for a large-screen TV includes: a horizontal member including a left speaker, a right speaker and a center speaker and functioning as an enclosure for the left speaker, the right speaker and the center speaker, wherein each of the speake... | 10/09/2007 |
| 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 preferably derives a cancellation signal from the difference between the left ... | 08/07/2007 |
| 7231053 | Enhanced multi-channel audio surround sound from front located loudspeakers In a loudspeaker system with main and sub-speakers, a modified and inverted left surround signal is added to the signals driving the right main speaker and a modified and inverted right surround signal is added to the signals driving the Left Main Speaker for the pu... | 06/12/2007 |
| 7212872 | Discrete multichannel audio with a backward compatible mix A multichannel audio format provides a truly discrete as well as a backward compatible mix for surround-sound, front or other discrete audio channels in cinema, home theater, or music environments. The additional discrete audio signals are mixed with the existing di... | 05/01/2007 |
| 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 gain of the center speaker is attenuated in relation to the global vol... | 04/17/2007 |
| 7181029 | Speaker system for picture receiver and speaker installing method A speaker system for a picture receiver provides for lessening of the casing width of the picture receiver while assuring highly uniform acoustic characteristic at listening points in a sufficiently broad range. The speaker system for picture receiver and its speake... | 02/20/2007 |
| 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 speaker location. The method includes phase shifting the left rear surr... | 02/13/2007 |
| 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 audio signals are stereo. Mixed output signals are generated with pass... | 02/13/2007 |
| 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 performing a binaural synthesis introducing a time delay between the channel... | 01/23/2007 |
| 7164768 | Audio signal processing A method for processing and transducing audio signals. An audio system has a first audio signal and a second audio signal that have amplitudes. A method for processing the audio signals includes dividing the first audio signal into a first spectral band signal and a... | 01/16/2007 |
| 7164773 | Vehicle electroacoustical transducing An audio system for a vehicle that includes a first passenger location and a second passenger location, the second passenger location situated behind the first passenger location, the audio system including a first directional audio channel signal source; a surround... | 01/16/2007 |
| 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 output channels, the process being responsive to information contained... | 12/12/2006 |
| 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 and speakers are provided integrally with the multichannel acoustic s... | 12/05/2006 |
