| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 221 | Reverberation device | JP10220389 | 1989-04-20 | JPH02280199A | 1990-11-16 | MORIHIRO YOSHIHARU; HAYAKAWA FUJIO |
| PURPOSE: To obtain a natural reverberation feel even in listening environment of, for example, a narrow listening space and high sound absorptivity by measuring the impulse response characteristics of the listening space and adding the reflection sounds calculated in accordance with the measured value to a source signal. CONSTITUTION: The response in a vehicle room 5 by the impulse signal is collected by a microphone 6 installed in prescribed position, such as a driver's seat and is transmitted to an impulse response measuring instrument 7. The impulse signal which is the output of an impulse generator 1 is also impressed as a trigger signal thereto. The impulse response signal measured by the impulse response measuring instrument 7 is sent to a autocorrelation function calculator 8 where an autocorrelation function (ACF) is calculated from the impulse response characteristics and is outputted to an optimum reflection sound calculator 9. Since the optimum reflection sound is calculated from the impulse response characteristics of the listening time in such a manner, the optimum reflection sound is calculated from the impulse response characteristics of the listening time in such a manner, the optimum reflection sound corresponding to the reverberation characteristics of the listening space is added to the source signal. The natural reverberation feel is obtd. even in the listening space of the narrow space and high sound absorptivity, such as, for example, automobile room. COPYRIGHT: (C)1990,JPO&Japio | ||||||
| 222 | Speaker system | JP15586687 | 1987-06-23 | JPS64887A | 1989-01-05 | INOUE HIDEAKI; KAKIUCHI YOSHIHIKO; OKADA ASAHIKO |
| PURPOSE: To expand a low frequency band characteristic by a small-sized speaker box by freely varying the cavity resonance frequencies of first and second ports provided on the one surface and the back plate of the speaker box or sound volume, emitted through these two ports. CONSTITUTION: The sound pressure frequency characteristic (e) of a speaker system is obtained by synthesizing frequency characteristics e 1 and e 2, obtained by a cavity resonance between the first port 5 and the second port 6, provided on the back plate, and the low frequency band characteristic can be widely expanded compared with the sound pressure frequency characteristic (a) of the tightly closed box of the same volume. In case of the speaker system is installed in a listening room, and is evaluated in an audition state, because it is installed at the corner or the vicinity of the wall of the room, it is auditioned as the composite sound of the sound (f) emitted from the front face of the speaker system, and the sound (g) emitted from the port 6, provided on the back plate. The sound (g) is expanded at its low frequency by the wall 11 and a floor, and the sense of low frequency of the sound pressure frequency characteristic is expanded, compared with an anechoic room. COPYRIGHT: (C)1989,JPO&Japio | ||||||
| 223 | Audio equipment for vehicle use | JP9748578 | 1978-08-09 | JPS5523687A | 1980-02-20 | KAGAWA NOBORU; OOTANI KENJI; YAMADA AKIYOSHI |
| PURPOSE:To install the selection means at a location easily operationable by the rider, by forming echo characteristics close to the listening room normally in the car room and separating the audio reproduction unit and the unit selection means through the use of audio image control technology including the delay circuit. CONSTITUTION:The input signal of left and right channel signals L and R of the audio reproducing unit 1A is mixed with the mixing circuit 28 to output the output signal 03, and this signal O3 is delayed at the delay circuit 29 to output the output signal O4. Further, the signal O4 is inverted for the phase at the delay circuit 30 and the output signals O5 and O6 are picked up. The signals O5, O6 are respectively fed to the mixing circuits 31, 32 taking the signal of L and R as input, and the output signal O7, O8 are fed to the amplifiers 33 and 34. The output of the unit 1 is selected with the switch 38 determining three selected positions provided at the tuner 3A and fed to the L and R control circuits 39 and 40, to form excellent echo characteristics by controlling the respective signal. | ||||||
| 224 | Acoustic adjusting device | JP2005034616 | 2005-02-10 | JP2006220937A | 2006-08-24 | TOGASHI MOTOYASU; OKAMOTO TAKEHISA |
| PROBLEM TO BE SOLVED: To provide an acoustic adjusting device capable of easily adjusting a diffuse reflection performance, and thereby adjusting acoustic characteristics of an installed listening room. SOLUTION: The acoustic adjusting device 100 comprises a horizontal floor part 1, a back part 2 vertically erected from a rear end of the floor part 1, side parts 3, 4 vertically erected from both of the right and left ends of the floor part 1, plate-like fins 5 vertically erected from the floor part at equal intervals parallel to and between the side parts 3, 4 so as to form grooves 10 among them, and groove depth adjusting parts 6 which are arranged vertical to the floor part 1 and parallel to the back part 2 in the grooves 10 formed among the seven plate-like fins 5 and which adjust the depths of the grooves 10. The depth adjusting part 6 comprises a reflecting plate 31 as a movable part specifying a depth of the groove 10, a screw 32 of which the head part 32a is on one side and the thread part 32b is on the other side and the head part 32a is embedded in the reflecting plate 31, and a metallic fixture 33 located behind the the reflecting plate 31 in each groove 10. COPYRIGHT: (C)2006,JPO&NCIPI | ||||||
| 225 | Sound field controller | JP2006126870 | 2006-04-28 | JP2007300403A | 2007-11-15 | KATAYAMA MAKI; TAKESHITA KENICHIRO; MASUDA KATSUHIKO |
| PROBLEM TO BE SOLVED: To provide a sound field controller for adjusting output balance of indirect sound components and frequency characteristics of the indirect sound components in accordance with a sound field environment where an acoustic system for reproducing multi-channel sound is installed. SOLUTION: The controller includes: a function to measure a sound field in a listening room where audio equipment is installed; a front input signal synthesis part and surround input signal synthesis part for adjusting and outputting an output level on the basis of any of multi-channel sound signals; and a front sound field formation part and surround sound field formation part for creating sound effect of a prescribed hall on the basis of information on delay and gain of a reflecting sound formed by the acoustic data of the hall. The function to measure the sound field causes each of speakers to generate a test sound one by one at a time at regular intervals while a microphone is installed in the sound field where the acoustic device is located, acquires a level of sound data some ten seconds later out of the acquired data and, on the basis of these, the controller adjusts the output balance and frequency characteristics. COPYRIGHT: (C)2008,JPO&INPIT | ||||||
| 226 | Acoustic device | JP24465697 | 1997-08-26 | JPH1169500A | 1999-03-09 | HAGA TAKENORI |
| PROBLEM TO BE SOLVED: To adjust the fixed position of sound in the middle of adjacent speakers by crossing the levels of signals supplied to channels corresponding to the at least two adjacent speakers within the plural channels so as to increase one when the other is gradually attenuated and outputting the signals. SOLUTION: The signals V1-V5 for sound field adjustment are supplied to respective channel speakers FL-SL. The signals V1-V5 for the sound field adjustment are generated in a generator 1, crossed so as to gradually attenuate one and increase the other of the output of the adjacent channels for fixed time for each channel in attenuators 2-1-2-5 and repeatedly outputted in an order. A listener is positioned at the almost center of a listening room 11 and adjusts electronic volumes 5-1-5-5 and delay circuits 4-1-4-5 so as to fix sound volumes outputted from the speakers FL-SL and make phases almost the same. Thus, adjustment is performed so as to smoothly move a sound image at fixed sound volume and speed. | ||||||
| 227 | Audio system | JP6611996 | 1996-03-22 | JPH09260985A | 1997-10-03 | SASAKI MITSURU |
| PROBLEM TO BE SOLVED: To automatically set spatial frequency characteristic suitable to the environment of a placewhere a system is installed by providing a means for individually recognizing a bracket provided for each hearing place. SOLUTION: Brackets 21, 22... are previously installed at the respective hearing places such as a vehicle panel and a listening room, for example, and one audio main body 1 is moved and mounted onto any desired bracket. The audio main body 1 is provided with plural switches 15a, 15b' and constituted so as to close contacts by being pressed with projections 21a, 22a, 22b... arranged at the brackets 21, 22... at the time of mounting. Since the projections 22a, 22b... are installed while combining different arranging positions for each of brackets 21, 22..., a detection part 15 recognizes the place where the audio main body 1 is installed. An equalizer part 11 is provided with plural equalizers A, B... set previously to the frequency characteristics suitable for the installation environment for each hearing place and selects any equalizer according to the information of the detection part 15. COPYRIGHT: (C)1997,JPO | ||||||
| 228 | Reflected sound and reverberated sound reproducing device | JP251788 | 1988-01-11 | JPH01179600A | 1989-07-17 | TAKEMOTO MASAAKI; YAKO SATORU; KURODA NAOSUKE |
| PURPOSE: To extremely faithfully reproduce presence in an acoustic space by considering reflected sounds included in a sound source and other reflected sounds in a sound receiving and listening space and preparing the parameters of the reflected sounds corresponding to various sound sources and sound receiving and listening spaces. CONSTITUTION: The title device is equipped with a parameter storing means 3 to store the parameters of the reflected sounds and the parameters of reverberated sounds to be generated at respective speakers and a reflected sound forming means 2 to respectively generate the reflected sounds and the reverberated sounds of the sound source by a convolution operation based on the respective stored reflected sound parameters and reverberated parameters. Since the convolution operation is executed not by merely convoluting the parameters of the reflected sounds and the parameters of the reverberated sounds in the acoustic space such as a concert hall into the sound source but by convoluting the parameters based on the reflected sound data and the reverberated sound data of the acoustic space in consideration of the reflected sounds and the reverberated sounds included in the sound source and the reflected sounds and the reverberated sounds in the sound receiving and listening space such as a listening room, the natural reflected sounds and reverberated sounds in the acoustic space can be reproduced extremely faithfully. COPYRIGHT: (C)1989,JPO&Japio | ||||||
| 229 | Signal conversion device | JP14292979 | 1979-11-05 | JPS5667000A | 1981-06-05 | KIKUCHI MITSURU; HARAMOTO YUTAKA |
| PURPOSE:To get rid of an oppressive sensation to the auditory sense, by making an acoustic image exist in the outside of a head, by a simple circuit configuration which has combined delay circuits, adders, phase-shifting circuit, etc., when listening to a stereophonic signal by a head phone. CONSTITUTION:Signals from the left channel and right channel signal input terminals 1 and 2 are made to branch to a main signal and a subsignal, respectively, the main signal is directly provided to the adders 15, 16, the subsignal is provided to the delay circuits 3, 4, respectively, and plural time lag signals corresponding to the reflected sound in the listening room are output. The outputs of these circuits 3, 4 are added by the adders 5, 6, and the outputs of said adders 5, 6 are provided to the adders 7, 11 and the subtractors 10, 14, respectively, also are provided to the phase-shifting circuits 8, 12 and the outputs which have adjusted the phase shift by these circuits 8, 12 are provided to the adders 7, 11 and the subtractors 10, 14. And the outputs of the subtractor 14 and the adder 7 are provided to the adder 15, the outputs of the subtractor 10 and the adder 11 are provided to the adder 16, and signals which have inserted an acoustic image into the outside position of a head are output from the output terminals 17, 18. | ||||||
| 230 | ADAPTIVE SOUND FIELD CONTROL | PCT/EP2010/068934 | 2010-12-06 | WO2012003894A1 | 2012-01-12 | PEDERSEN, Jan Abildgaard |
The present invention relates to a method for controlling one or more loudspeakers provided in an enclosure, such as a listening room or an automobile cabin, the method comprising the steps of: (i) providing said one or more loudspeakers (2, 3, 4) with an audio input signal (5) whereby a sound field (10) is generated in the enclosure (1), and determining the corresponding acoustic power output APO(f) emitted from the one or more loudspeakers (2, 3, 4) into said enclosure (1); (ii) determining an acoustic contribution or room gain RG(f) of the enclosure (1) to the generated sound field (10); (iii) optionally determining a listening position interface LPI(f) that characterises a listener's ability to receive sound energy from a sound field at the specific place in the sound Field, in which he is located; and (iv) determining a filter characteristic as a function of the acoustic power output, the acoustic contribution or room gain RG(f) of the enclosure to the sound field in the enclosure and optionally the listening position interface between the sound field at the listening position and a listener placed at this position. The invention furthermore relates to a system for carrying out the above method and specifically to the use of the method and system for obtaining optimal audio reproduction in confined spaces such as automobile cabins. |
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| 231 | SURROUND SIGNAL PROCESSING APPARATUS AND METHOD | PCT/KR1998/000418 | 1998-12-09 | WO99033325A2 | 1999-07-01 | |
| A surround signal processing apparatus and method can realize sound image localization and have reverberation effects. In the apparatus, left and right impulse measuring sections measure left and right impulses of a head related transfer function for an input audio signal based on a number of a plurality of lattices defined in a three-dimensional space, horizontal and vertical angles defined by a center of a dummy head and the plurality of lattices. Left and right convolution operators convolve left and right channel signals of input audio signal with left and right impulses of head related transfer function, respectively, in order to localise sound image for input audio signal at an objective localisation position. Left and right reverberators impart first and second reverberant sounds to left and right channel signals, respectively. According to the apparatus and method, it is possible to reproduce two pseudo surround signals from a pair of virtual rear speakers by use of a pair of actual front speakers; that is, to construct a 4-channel surround system by use of only two speakers. Further, they provide a listener with a feeling of presence as if he is listening to the music in a different sound field such as a spacious concert hall, church or stadium notwithstanding the fact that he is actually in an ordinary room, a listening room, or a vehicle. | ||||||
| 232 | SURROUND SIGNAL PROCESSING APPARATUS AND METHOD | PCT/KR9800418 | 1998-12-09 | WO9933325A3 | 1999-11-25 | LEE TAE-HYUN |
| A surround signal processing apparatus and method can realize sound image localization and have reverberation effects. In the apparatus, left and right impulse measuring sections (302, 304) measure left and right impulses (hL, hR) of a head related transfer function (HRTF) for an input audio signal (Um) based on a number (h) of a plurality of lattices (404) defined in a three-dimensional space (402), horizontal and vertical angles defined by a center (c) of a dummy head (DH) and the plurality of lattices (404). Left and right convolution operators (306, 308) convolve left and right channel signals of input audio signal with left and right impulses of head related transfer function, respectively, in order to localize sound image for input audio signal at an objective localisation position. Left and right reverberators (310, 312) impart first and second reverberant sounds to left and right channel signals, respectively. According to the apparatus and method, it is possible to reproduce two pseudo surround signals from a pair of virtual rear speakers by use of a pair of actual front speakers; that is, to construct a 4-channel surround system by use of only two speakers. Further, they provide a listener with a feeling of presence as if he is listening to the music in a different sound field such as a spacious concert hall, church or stadium notwithstanding the fact that he is actually in an ordinary room, a listening room, or a vehicle. | ||||||
| 233 | Audio enhancement system and method | EP05010513.9 | 2005-05-13 | EP1722360A1 | 2006-11-15 | Christoph, Markus |
Audio enhancement system and method for compensating for linear distortions of a sound signal reproduced by an audio system in a listening room; said audio enhancement method includes analysis filtering for generating a number of analysis output signals from an audio signal to be enhanced; and synthesis filtering for generating an enhanced audio signal from a number of synthesis input signals, wherein said number of analysis output signals and said number of synthesis input signals are identical. Signal processing between the analysis filtering and the synthesis filtering generates one of the synthesis input signals from a respective one of the analysis output signals in order to perform an inverse filtering for linearizing an unknown transfer function established by the audio system and the listening room in the respective frequency range.
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| 234 | Virtual sound source system | US2541 | 1979-01-11 | US4227050A | 1980-10-07 | Bernard T. Wilson |
| A virtual sound source system comprises a pair of speaker cabinets of unique design positioned along the front wall of a listening room. The speaker cabinets together with the front wall, sidewalls and ceiling of the room provide for playing back recordings of conventional stereo sound and converting them into the equivalent of binaural recordings through headphones at the ears of the listener. Each of the speaker cabinets has a rearwardly facing low frequency range speaker disposed on the rear thereof and an upwardly facing high frequency range speaker disposed below a parabolic reflector which disperses sound forwardly thereof. The low frequency sounds are reflected with huge wavefronts off either side of the front wall, sidewalls and ceiling of the room so as to converge onto the listening area thereof. The high frequency sounds are dispersed by the parabolic reflectors onto the sidewalls and ceiling of the room from which they reflect so as to converge onto the listening area. By such an arrangement, paths of sound are physically created in the listening room that propagate toward the listening area in a manner very similar to and in context with those present in a concert hall during a live performance. Such paths of sound enable a listener standing anywhere in the listening area to sense direction, distance, size and shape from the reproduced sound as though from the original source and with the realism of a live performance. Thus, the listener perceives sound from a virtual, rather than a real, sound source. | ||||||
| 235 | INTENTION RECOGNITION FOR TRIGGERING VOICE RECOGNITION SYSTEM | EP17185325.2 | 2017-08-08 | EP3285160A1 | 2018-02-21 | WANG, Hongcheng; FINN, Alan Matthew; HSU, Arthur; XIONG, Ziyou |
A method and intent recognition system that triggers voice recognition is provided. The intent recognition system includes an intent recognition device that detects a user location and/or behavior in a building and detects a triggering event based on the user location and/or behavior that suggests the user wants to input a service request, a prompt device that is triggered to provide a prompt based on the detecting by the intent recognition device and the detected triggering event, a listening device that receives an auditory input from the user, a signal processing device that processes the received auditory input and generates a control signal, and in-building equipment that receives the control signal from the signal processing device and controls the in-building equipment based on the control signal.
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| 236 | Stethoscope consisting of a stethoscope chest piece and a sound mixer | US487590 | 1974-07-11 | US3938615A | 1976-02-17 | Jacob Bodenger |
| An improved stethoscope for use in medical diagnosis as a listening device to detect sounds within the thoracic cavity is provided having improved sound reception and transmission characteristics. The improved stethoscope has an improved stethoscope chestpiece which has two sound chambers for receiving sounds as the instrument is placed against a patient. One sound chamber is the same as that described in my earlier U. S. Pat. No. 3,067,833, utilizing a diaphragm across the mouth of the sound chamber, while the second sound chamber utilizes no diaphragm. The structure forming the second sound chamber is rotatable with respect to the structure forming the first sound chamber; rotation of the second structure with respect to the first structure between two stops results in the two chambers being acoustically connected at one position while at the second position the two chambers are acoustically insulated from each other. Dual sound transmission passageways are utilized for providing the physician with stereophonic sounds at all times. A sound mixing block is also provided which the stethoscope user may utilize at his option to provide an increased stereophonic effect and to provide a greater richness to the sound. | ||||||
| 237 | Sound system including an engine sound synthesizer | US14572221 | 2014-12-16 | US09536510B2 | 2017-01-03 | Markus Christoph |
| A system for reproducing synthetic engine sound in at least one listening position of a listening room is described. In accordance an example of, the system includes a model parameter database including various pre-defined sets of model parameters. An engine sound synthesizer receives at least one guide signal and is configured to select one set of model parameters in accordance with the at least one guide signal. The engine sound synthesizer generates a synthetic engine sound signal in accordance with the selected set of model parameters. At least one loudspeaker is used for reproducing the synthetic engine sound. The system further includes one of the following: (1) an equalizer and (2) a model parameter and the effect of the listening room on the resulting acoustic signal is approximately compensated at the one listening position. | ||||||
| 238 | Method and system for driving speakers with a 90 degree phase shift | US09217770 | 1998-12-21 | US06683962B1 | 2004-01-27 | David H. Griesinger |
| A method and system for providing enhanced coupling of a stereophonic pair of full-range loudspeakers or subwoofers to all room modes of a laterally symmetric listening room wherein the preferred location of a listener is on the lateral center line thereof, by applying the left and right audio signals or the low frequency components thereof through a pair of all-pass phase shift networks having an in-phase relationship at higher audio frequencies and an approximately quadrature phase relationship at low audio frequencies where localization is not possible. The method and system may further be compensated by a 3 dB bass boost in each channel to provide the same sound pressure level at low frequencies as would occur with a pair of subwoofers placed together in one comer of the room and driven in phase, thereby ensuring a constant sound pressure level along the lateral center line of the listening room at all audio frequencies. | ||||||
| 239 | SOUND SYSTEM INCLUDING AN ENGINE SOUND SYNTHESIZER | US14572221 | 2014-12-16 | US20150170629A1 | 2015-06-18 | Markus CHRISTOPH |
| A system for reproducing synthetic engine sound in at least one listening position of a listening room is described. In accordance an example of, the system includes a model parameter database including various pre-defined sets of model parameters. An engine sound synthesizer receives at least one guide signal and is configured to select one set of model parameters in accordance with the at least one guide signal. The engine sound synthesizer generates a synthetic engine sound signal in accordance with the selected set of model parameters. At least one loudspeaker is used for reproducing the synthetic engine sound. The system further includes one of the following: (1) an equalizer and (2) a model parameter and the effect of the listening room on the resulting acoustic signal is approximately compensated at the one listening position. | ||||||
| 240 | Audio enhancement system | US11434496 | 2006-05-15 | US20060259531A1 | 2006-11-16 | 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. | ||||||
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