| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | Audio enhancement system | US11434496 | 2006-05-15 | US07881482B2 | 2011-02-01 | Markus Christoph |
| An audio enhancement system is provided for compensating for distortions (e.g., linear distortions) of a sound signal reproduced by an audio system in a listening room. The audio enhancement system includes analysis filters that generate a plurality of analysis output signals from an audio signal to be enhanced. The system also includes synthesis filters that generate an enhanced audio signal from a number of synthesis input signals. The number of analysis output signals and the number of synthesis input signals preferably are equal. Signal processing elements between the analysis filters and the synthesis filters generate one of the synthesis input signals from a respective one of the analysis output signals to perform an inverse filtering for linearizing an unknown transfer function indicative of the audio system and the listening room in the respective frequency range. | ||||||
| 242 | Integrated dubbing system for use in a car | EP99200973.8 | 1999-03-31 | EP1018742A2 | 2000-07-12 | Igbinadolor, Phillip |
An integrated car and entertainment dubbing system for listening, interacting, and dubbing of new musical release, live musical and entertainment awards, internet, internet user's frequency, commercial and distortion free broadcasting, accessory modulation activities, and activities within the view scope of the system's micro and infra red camera using the unique reverse logic dubbing cpu and programmable implementation software to record in nine sequences; the unit's structural components are integrated into a common circuitry to function in a simultaneous listening, viewing, interactive, and dubbing pleasures; the keys or buttons on the face of the unit enable the consumer to select any operation without affecting any dubbing process in progress; the unit's command control, technical support team, in house control and command, and the apparatus are fully integrated into a single unit rather than multiple units. |
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| 243 | Audio system phase equalizion | EP09174806.1 | 2009-11-02 | EP2326108A1 | 2011-05-25 | Christoph, Markus; Scholz, Leander |
A method for optimizing the acoustic localization at at least one listening position within a listening room is disclosed. A sound field being generated by a group of loudspeakers assigned to the least at one listening position, wherein the group of loudspeakers comprises a first and at least a second loudspeaker each being supplied by an audio signal via an audio channel. The method comprises calculating filter coefficients of a phase equalization filter for at least the audio channel supplying the second loudspeaker, whereby the phase response of the phase equalization filter is designed such that a binaural phase difference on the at least one listening position or a mean binaural phase difference averaged over more than one listening positions is minimized within a predefined frequency range and applying the phase equalization filter to the respective audio channel.
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| 244 | Vertically and horizontally balanced subwoofer | US14862359 | 2015-09-23 | US09462391B2 | 2016-10-04 | Robert G. Johnston; Sanford M. Gross |
| A speaker system, particularly useful as a subwoofer, comprises an enclosure with one acoustic transducer facing to the right and one acoustic transducer facing to the left, which effectively cancels out transducer cone mass induced vibration within the enclosure. The enclosure also has one passive radiator facing up and one passive radiator facing down. The passive radiator facing down effectively couples acoustic energy at very low frequencies into the floor. The passive radiators each have a rather a large area and high mass. The large, high mass, bottom mounted passive radiator will produce large amounts of enclosure vibration, and so to cancel this vibration, the upper passive radiator is of substantially the same mass and size. The resulting system will be vibrationally balanced on all axes while simultaneously effectively coupling low frequency energy onto the floor of the listening room with good efficiency. | ||||||
| 245 | AUTOMATIC TIMBRE CONTROL | US14906687 | 2014-07-02 | US20160163327A1 | 2016-06-09 | Markus CHRISTOPH |
| A system and method for automatically controlling the timbre of a sound signal in a listening room are also disclosed, which include the following: producing sound in the time domain from a re-transformed electrical sound signal in the time domain, in which an electrical sound signal in the time domain being transformed into electrical sound signal in the frequency domain and the electrical sound signal in the frequency domain being re-transformed into the re-transformed electrical sound signal; generating a total sound signal representative of the total sound in the room, processing the total sound signal to extract an estimated ambient noise signal representing the ambient noise in the room; and adjusting the spectral gain of the electrical sound signal in the frequency domain dependent on the estimated ambient noise signal, the electrical sound signal and a room dependent gain signal. | ||||||
| 246 | Vertically and Horizontally Balanced Subwoofer | US14862359 | 2015-09-23 | US20160094909A1 | 2016-03-31 | Robert G. Johnston; Sanford M. Gross |
| A speaker system, particularly useful as a subwoofer, comprises an enclosure with one acoustic transducer facing to the right and one acoustic transducer facing to the left, which effectively cancels out transducer cone mass induced vibration within the enclosure. The enclosure also has one passive radiator facing up and one passive radiator facing down. The passive radiator facing down effectively couples acoustic energy at very low frequencies into the floor. The passive radiators each have a rather a large area and high mass. The large, high mass, bottom mounted passive radiator will produce large amounts of enclosure vibration, and so to cancel this vibration, the upper passive radiator is of substantially the same mass and size. The resulting system will be vibrationally balanced on all axes while simultaneously effectively coupling low frequency energy onto the floor of the listening room with good efficiency. | ||||||
| 247 | Adaptive sound field control | US13702120 | 2010-12-06 | US09065411B2 | 2015-06-23 | Jan Abildgaard Pedersen |
| The present invention relates to methods and systems for determining an equalization filter for one or more loudspeakers provided in an enclosure, such as a listening room or an automobile cabin. A method for determining an equalization filter for one or more loudspeakers provided in an enclosure comprises the steps of providing the one or more loudspeakers with an audio input signal whereby a sound field is generated in the enclosure; determining an acoustic contribution or room gain of the enclosure to the generated sound field; forming a speaker equalization filter as the square root of the ratio between a target acoustic power output and the actual acoustic power output from the loudspeaker driver(s), which actual acoustic power output is calculated as the square of the power averaged sound pressure divided by the room gain; and determining the equalization filter as the speaker equalization filter. | ||||||
| 248 | Ultrasonic Grasshopper and Pest Deterrent | US13547618 | 2012-07-12 | US20130077446A1 | 2013-03-28 | LaDean R. Kasper |
| Disclosed is an ultrasonic pest deterrent device adapted for use in greenhouses and gardens, comprising a printed circuit board, output signal transducer and a housing adapted to shroud the components of the assembly within its waterproof interior. The device comprises a ramp signal generator and voltage control oscillator adapted to sweep between a chosen set of switchable frequency pitch ranges and tones, a sweep stop for single tone testing, a confidence test button, a power switch and indicator light. The confident test button provides an audible tone within human hearing range to ensure the device is operational, while the power indicator light provides a visual means of verifying operation when the device is emitting signals in the ultrasonic range. A timing circuit disables or modulates the device from continuous operation, saving battery life and randomizing the output signal for increased pest annoyance and deterrence. | ||||||
| 249 | Multiple channel sound system using multi-speaker arrays | US12434740 | 2009-05-04 | US08363865B1 | 2013-01-29 | Heather Bottum |
| An apparatus that provides for the reproduction of 6.1 surround sound (or other formats of) audio programs using a minimum of two speaker cluster locations is disclosed. The current invention accurately produces surround sound effects with speakers in only two locations in lieu of the conventional six. A sub-woofer, in its normal configuration, can be used with the invention if desired. The left front, rear center, rear left and center signals are produced from a left cluster array. The right front, rear center, rear right and center signals are produced from a right cluster array. This configuration eliminates the need for a center speaker and for rear speakers. Such elimination of speaker locations, along with their associated wiring, produces a less cluttered look, and lends itself to use in listening rooms of smaller size. | ||||||
| 250 | SOUND PROCESSING APPARATUS AND METHOD | US12962469 | 2010-12-07 | US20110150230A1 | 2011-06-23 | Atsushi Tanaka |
| A sound processing apparatus according to the present invention acquires a test signal for measuring a standing wave state emitted in a listening room, and determines a peak position or a dip position due to a standing wave based on frequency characteristics of the test signal. Next, the sound processing apparatus emits a burst signal corresponding to the frequency of the peak position or the dip position, and acquires this signal. The sound processing apparatus calculates an increment ΔP of the acquired signal, which indicates an amount of increase of a peak in the trailing edge portion corresponding to the end position of the burst signal relative to a peak in the portion corresponding to the stationary portion of the burst signal, and attenuates the frequency of the above peak position or dip position of a sound signal to be output by an attenuation depending on ΔP. | ||||||
| 251 | Trap for controlling standing waves in rooms | US177236 | 1994-01-04 | US5444198A | 1995-08-22 | John M. Gallas |
| This invention is an improved bass trap for controlling standing waves in the listening room. It is cylindrical in shape, with a curved diffuser around one half of the length of the cylinder. The interior of the cylinder is divided into two hemi-cylinders, with one hemi-cylinder made of an absorbing material positioned opposite the curved diffuser, and one hemi-cylinder, which is an air cavity, defined by the boundary of the absorbing material on one side and the diffuser on the other. This device features a ported top, with the ports positioned over the air cavity, which allow tuning pipes of varying length and diameter to be inserted, in order to permit further tuning of the device. | ||||||
| 252 | Ultrasonic grasshopper and pest deterrent | US13547618 | 2012-07-12 | US08737170B2 | 2014-05-27 | LaDean Ray Kasper |
| Disclosed is an ultrasonic pest deterrent device adapted for use in greenhouses and gardens, comprising a printed circuit board, output signal transducer and a housing adapted to shroud the components of the assembly within its waterproof interior. The device comprises a ramp signal generator and voltage control oscillator adapted to sweep between a chosen set of switchable frequency pitch ranges and tones, a sweep stop for single tone testing, a confidence test button, a power switch and indicator light. The confident test button provides an audible tone within human hearing range to ensure the device is operational, while the power indicator light provides a visual means of verifying operation when the device is emitting signals in the ultrasonic range. A timing circuit disables or modulates the device from continuous operation, saving battery life and randomizing the output signal for increased pest annoyance and deterrence. | ||||||
| 253 | Sound processing apparatus and method | US12962469 | 2010-12-07 | US08401201B2 | 2013-03-19 | Atsushi Tanaka |
| A sound processing apparatus according to the present invention acquires a test signal for measuring a standing wave state emitted in a listening room, and determines a peak position or a dip position due to a standing wave based on frequency characteristics of the test signal. Next, the sound processing apparatus emits a burst signal corresponding to the frequency of the peak position or the dip position, and acquires this signal. The sound processing apparatus calculates an increment ΔP of the acquired signal, which indicates an amount of increase of a peak in the trailing edge portion corresponding to the end position of the burst signal relative to a peak in the portion corresponding to the stationary portion of the burst signal, and attenuates the frequency of the above peak position or dip position of a sound signal to be output by an attenuation depending on ΔP. | ||||||
| 254 | Battery compartment adapted object locating device | US13089294 | 2011-04-18 | US20120262301A1 | 2012-10-18 | Raymond F. Davidson; John T. St. Ledger |
| An object locating device containing a transmitter, receiver, and adapted battery. The receiver and adapted battery are sized to correspond to a standard sized battery and fit into the battery compartment of the object to be located. The transmitter, when activated, emits a radio frequency that is received by the receiver. Upon receipt of this signal, receiver emits an audible tone allowing the user to locate a missing object. The receiver includes a power source, circuit board, and voltage bridge. Adapted battery contains an increased voltage to compensate for the loss of power from the receiver, wherein a user will remove two of the existing batteries from the device and replace them with adapted battery and receiver. | ||||||
| 255 | Method and apparatus for achieving active noise reduction | US11856406 | 2007-09-17 | US08249265B2 | 2012-08-21 | Eric L. Shumard |
| A system and method for actively changing the sound perceived by listeners in an audio environment. A single transducer is used as both a sensing microphone and as an output driver. In one embodiment, the invention is implemented as an active noise cancellation system. The sensed noise signals are phase shifted to provide a cancellation effect, combined with the desired audio program signals, and output to the transducer, thereby reducing the level of unwanted noise heard by they listener. In other embodiments, the system can be used to sense the frequency response of a listening room and make appropriate equalization adjustments to the output. | ||||||
| 256 | LOUDSPEAKERS AND SYSTEMS | US12693982 | 2010-01-26 | US20100254564A1 | 2010-10-07 | Godehard A. Guenther |
| The invention provides, in one aspect, a loudspeaker that has electrodynamically-driven piston mounted in one external wall and that has movable panels in one or more other external walls. Those panels are air-coupled to the piston, e.g., via air within the enclosure, such that vibrational motion of the piston causes the vibration of the panels, thereby, improving the overall air coupling of the piston to the external environment, e.g., the listening room. Further aspects of the invention provide an improved driver for use, e.g, in the aforementioned loudspeaker. The driver comprises a three-part piston having first and second diaphragms coupled back-to-back with one another and having a voice coil face-mounted (or front-mounted) within the second diaphragm. | ||||||
| 257 | Loudspeakers and systems | US11223214 | 2005-09-09 | US07653208B2 | 2010-01-26 | Godehard A. Guenther |
| The invention provides, in one aspect, a loudspeaker that has electrodynamically-driven piston mounted in one external wall and that has movable panels in one or more other external walls. Those panels are air-coupled to the piston, e.g., via air within the enclosure, such that vibrational motion of the piston causes the vibration of the panels, thereby, improving the overall air coupling of the piston to the external environment, e.g., the listening room. Further aspects of the invention provide an improved driver for use, e.g., in the aforementioned loudspeaker. The driver comprises a three-part piston having first and second diaphragms coupled back-to-back with one another and having a voice coil face-mounted (or front-mounted) within the second diaphragm. | ||||||
| 258 | METHOD AND APPARATUS FOR ACHIEVING ACTIVE NOISE REDUCTION | US11856406 | 2007-09-17 | US20080069368A1 | 2008-03-20 | Eric L. Shumard |
| A system and method for actively changing the sound perceived by listeners in an audio environment. A single transducer is used as both a sensing microphone and as an output driver. In one embodiment, the invention is implemented as an active noise cancellation system. The sensed noise signals are phase shifted to provide a cancellation effect, combined with the desired audio program signals, and output to the transducer, thereby reducing the level of unwanted noise heard by they listener. In other embodiments, the system can be used to sense the frequency response of a listening room and make appropriate equalization adjustments to the output. | ||||||
| 259 | Data processing apparatus and parameter generating apparatus applied to surround system | US11397998 | 2006-04-04 | US20060251260A1 | 2006-11-09 | Toru Kitayama; Kenichi Tamiya; Koji Kushida; Masao Kondou |
| Calculation is performed for sound paths 112-1, 114-1 along which sounds emitted from a sound emitting point 104 in an acoustic space 102 are reflected and delivered to a sound receiving point 106. By the calculation, entering angles θR1, θR2 by which the sound paths enter the front side 106a of the sound receiving point 106 are obtained. Calculation is then performed to obtain angles by which respective speakers 52C, 52L, 52R, 52SR, 52SL of a 5.1 surround system are arranged in a listening room, with the front side 106a of the sound receiving point 106 centered thereon. Audio signals on the respective sound paths are distributed among channels for any two speakers. Consequently, sharp localization of sound images is achieved, requiring less calculation in simulating acoustic characteristics of the acoustic space 102 in which the sound emitting point 104 for emitting sounds and the sound receiving point 106 for receiving the sounds are placed. | ||||||
| 260 | Sound image and sound field controlling device | US554938 | 1995-11-09 | US5999630A | 1999-12-07 | Masayuki Iwamatsu |
| On the basis of localization control data, a sound image localization controlling circuit reproduces input audio signals via a plurality of speakers after having applied predetermined delay-involving signal processing to the audio signals, to thereby perform sound image localization processing to localize sound images of direct sounds in a desired range including an area outside a space surrounded by the speakers. The audio signals are also supplied to a sound field controlling circuit after having been delayed by a predetermined time. The sound field controlling circuit performs operations to convolute the audio signals with reflected sound parameters so as to generate reflected sounds. The output signals of the sound image localization controlling circuit and sound field controlling circuit are fed to adders each adding together the signals of same channel. The resultant added signals are then sent to the speakers in a listening room for audible reproduction. | ||||||
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