Abstract: A loudspeaker apparatus is provided with a loudspeaker unit attached to an inner panel. The inner panel of the loudspeaker unit is provided with: an opening to which the loudspeaker unit is attached; a volume unit in which the loudspeaker unit is housed from the opening to form a closed space; and a groove passing through to the volume unit. The loudspeaker unit is housed in the volume unit, and a rear space of the loudspeaker unit in the volume unit is used as an acoustic volume unit of the loudspeaker unit.

Abstract: A vehicle headliner includes electromagnetic drivers for sonically driving a member or a layer of the headliner. A foam beam is shaped around a driver transducer connection area that holds one or more driver connectors. A cover may be maintained over the shaped foam beam to protect against entry of dust and other debris into the driver and the transducer connection area that receives the driver.

Abstract: A method for retransmitting a received radio programming signal is disclosed. The method comprises the steps of: receiving the signal over a cellular transmission network at a first transceiver station configured to output the radio programming signal; and transmitting the signal from the first transceiver station to at least a second transceiver station configured to output the radio programming signal.

Abstract: The present invention relates to a speaker for a vehicle and an installation structure therefor, and it is an object of the invention to enhance the speaker installation rigidity without impairing the acoustic characteristic of the speaker. The speaker installation structure comprises a speaker unit (1) for holding a speaker body (11) and having a plurality of claws (13) and a panel member (3) having an opening (4) and a plurality of slits (5). For the installation of the speaker unit (1), the plurality of claws (13) are inserted into the plurality of slits (5), respectively, and the speaker unit (1) is rotated in its circumferential direction. The opening (4) is made to be smaller than the diameter of a speaker housing (12) and to have at least three linear portions (41). Each of the slits (5) is formed outside the three linear portions (41) and inside an outer circumference of the speaker housing (12).

Abstract: The present invention provides a speaker module connectable to an earphone jack of a mobile phone and a method for using same. The speaker module comprises a microphone which converts voice signals into electrical signals, a speaker which converts electrical signals into acoustic signals, an amplifier which amplifies electrical signals, and a plug for connecting with the earphone jack of the mobile phone. Further, the plug can additionally comprise a terminal for sensing whether or not the speaker module is connected to the earphone jack terminal of the mobile phone.

Abstract: An output section, consisting of a pair of loudspeakers disposed adjacently to each other, is installed inside a seatback of a designated seat. Sound output surfaces of respective loudspeakers face a designated person sitting on the designated seat. It is hence easy to secure a required distance for obtaining clear acoustic image localization in accordance with the size of loudspeakers cooperatively constituting the output section.

Abstract: An articulating speaker assembly for the interior of a motor vehicle, which includes sidewall trim defining a pocket in the trim, includes a housing and at least one speaker operatively supported within the housing. The assembly includes at least one pivot arm having first and second ends. The first end is operatively connected to the housing and defines a rotational axis, and the second end is attached to the vehicle and defines a pivotal axis. The at least one pivot arm is adapted to pivot about the pivotal axis to selectively move and position the housing at each point along a path between a retracted position wherein said housing is operatively supported within the pocket and aligned substantially flush with the sidewall trim such that the sidewall trim and the housing are substantially co-planar in the retracted position of the housing, and an extended position outside the pocket.

Abstract: An audio system which system is incorporated in a child's stroller. The system includes speakers permanently enclosed in the sidewalls or canopy of the stroller. Protective padding is provided for the speakers to prevent damage thereto and to dampen the sound to afford protection to the child's hearing. A pocket is provided in the rear of the stroller whereby to house an audio player such as a CD player. Appropriate jacks are provided to connect the CD player to the speakers.

Abstract: A speaker mounting structure is provided in a head rest at an upper portion of a seat. A pair of left and right speakers are mounted to the head rest, which has a through-bore at a central portion so the speakers only occupy a lower half of the through-bore.

Abstract: A partitioned audio system for an automobile having front speakers and rear speakers wherein a transition phase is provided when the system is switched between single source and dual source modes. When switching from single source mode to dual source mode, the front speaker output gradually increases while the rear speaker output gradually decreases. Similarly, when switching from dual source mode to single source mode, the rear speaker output gradually increases while the front speaker output gradually decreases. In either case, the sound pressure level after switching modes is generally identical to the sound pressure level prior to switching modes.

Abstract: A dummy listener and right and left speakers 13 and 14 are disposed in an anechoic room as a model of the layout of those a car cabin 15 or the like. Transfer functions ALL, ALR, ARL and ARR in a space ranging from the speakers 13 and 14 to the right and left ears of a listener 16 in a car cabin 15 or the like are calculated from impulse response series aLL(t) to aRR(t) obtained when pulse sounds are respectively emitted from the speakers 13 and 14. A correction circuit 10b contains correction transfer functions H11, H12, H21 and H22, which are obtained by an inverse matrix of a 2-row and 2-column regular matrix of which the elements are the transfer functions ALL, ALR, ARL and ARR. Audio signals SL and SR on which head related transfer functions are superimposed are applied to the correction circuit 10b, and the output signals of the correction circuit 10b are supplied to the speakers 13 and 14.

Abstract: A speaker apparatus to be mounted on a vehicle includes a speaker unit and a mounting device. The speaker unit has a frame. The mounting device mounts the frame of the speaker unit on a panel member of a vehicle body. The mounting device includes insulators, which prevent vibration, which is caused by operation of the speaker unit in any direction, from being transmitted to the panel member in any direction.

Abstract: A vehicle mounted audio multimedia system has a variable audio volume adapted to changes in the condition of a road surface. A vehicle occupant manually sets a desired audio volume level. Motion is sensed within a suspension system of the vehicle during travel of the vehicle. A roughness value is determined in response to the motion. The roughness value is transformed into a volume boost, the volume boost generally increasing with an increase in the roughness value. The volume boost is added to the desired audio volume level to provide the audio gain.

Abstract: An automobile sound system includes a speaker, an enclosure for mounting the speaker, and a spaced deflector plate positioned in front of the speaker. The deflector plate is mounted to permit the deflector plate to move asymmetrically in response to the speaker.

Abstract: A multimedia car stereo system and particularly to a multimedia car stereo system that has a center sound track source to match speakers installed at different locations that output sound to generate a surrounding sound effect. It mainly includes a front left speaker, a front right speaker, a rear left speaker, a rear right speaker, a center speaker and a matching car stereo host machine. The center speaker is located on the central control station at the front side of the car to provide the center sound track source. Mating the output sound from other speakers mounted on different locations, a surrounding sound effect like that in the theater may be achieved in the car.

Abstract: A subwoofer assembly for use within an aircraft including a fuselage having a passenger platform, wherein the passenger platform includes an aisle and a seating area. The subwoofer assembly is shaped and dimensioned for positioning under the aisle. The subwoofer assembly includes a subwoofer housing having a profile shaped to substantially conform to a position beneath the passenger platform under the aisle. The subwoofer housing includes a sound port through which sound is delivered from the subwoofer assembly to a passenger compartment of the aircraft. The subwoofer assembly further including a sound driver mounted within the subwoofer housing for generating predetermined sounds.

Abstract: The present invention comprises an L channel speaker unit which produces an L channel signal; a R channel speaker unit which produces a R channel signal; and a center speaker unit which is placed between the L channel speaker unit and the R channel speaker unit and which produces a −L channel signal and a −R channel signal. For speakers mounted in an automobile described above, the L channel speaker unit and the R channel speaker unit are placed in the front center of the driver seat and passenger seat of an automobile, and the horizontal vibration axis is in a direction pivoting in a direction from the direction of motion of the automobile, and a vertical vibration axis is at a prescribed angle incline in the direction of motion of the automobile.

Abstract: The invention relates to a circuit having at least a first electroacoustic transducer (LSL, LSR) for converting electric signals into acoustic signals, a second electroacoustic transducer (MIC) for converting acoustic signals into electric signals, a program-controlled signal processing device (SPU) coupled to said transducers (LSL, LSR, MIC) to process the signals it supplies to the control device and a program storage (ROM) to store a program (AUM) for audio playback of a program (HFM) for hands-free operation for the signal processing device (SPU), wherein, the program (HFM) for hands-free operation is loaded in the signal processing unit and executed by latter in hands-free mode while the program (AUM) for audio playback is loaded in the signal processing device (SPL) and executed by the latter in the audio playback mode.

Abstract: The present invention includes a sound producing device assembly adapted for mounting a sound producing device assembly within a cavity. The sound producing device assembly is adapted for mounting within a cavity, such as a cavity within a boat. The assembly includes a sound producing device, a tubular member operatively connected to the sound producing device, and a flange operatively connected to the tubular member such that the flange connects to a surface.

Abstract: An audio apparatus includes a main audio signal processing circuit (12) for processing an audio signal read from a sound source (10), and a set of main speakers (SPA) and at least one set of sound effect speakers (SPB, SPC, etc.) which receive inputs of the audio signal undergoing the signal processing by the signal processing circuit (12). The main speaker (SPA) is mounted on an A-pillar (AP) in a vehicle passenger space, for example. The sound effect speakers (SPB, SPC, etc.) are mounted in a lower portion of the console (C), for example.

Abstract: A vehicle headliner includes electromagnetic drivers for sonically driving a member or a layer of the headliner. A foam beam is shaped around a driver transducer connection area that holds one or more driver connectors. A cover may be maintained over the shaped foam beam to protect against entry of dust and other debris into the driver and the transducer connection area that receives the driver.

Abstract: 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 interference.

Abstract: The invention features a dual-mode audio system for an automobile which in one mode is configured for play while the doors to the automobile are closed, and in a second mode, is configured for play while a door, such as a tailgate, is opened. Additionally, the invention also features a battery monitor which monitors the operating condition of the battery and may estimate the energy capacity of the battery. The system may also take power conservation measures if the system determines that the engine is not running or the operating condition of the batter reaches a predetermined state. The invention also features a remote control integrated within a key fob for controlling the audio system. The invention features various orientations for mounting a pair of loudspeakers within an automobile which directly radiate sound out of a rear opening of the automobile.

Abstract: A combination speaker and dome lamp assembly is adapted to be mounted at the intersection of a roll bar and side bar of a vehicle equipped with such bars, such as convertible off-road vehicles.

Abstract: The invention relates to an audio system for a motor vehicle, having a plurality of loudspeaker units to which audio signals from various audio signal sources are supplied. The invention proposes designing the supply between at least one audio signal source and at least one loudspeaker unit to be entirely or partially redundant in the form of a primary and a secondary supply.

Abstract: A speaker box for a sport utility vehicle. The speaker box is pivotally mounted to the sports bar of the vehicle and can be selectively pivoted relative to the bar to a plurality of positions. In one position, the sound from the speakers of the speaker box is directed downwardly as in convention designs. However, unlike conventional designs, the speaker box and its sound can also be directed rearwardly of the vehicle for parties and other gatherings such as at campsites or on the beach. Further, the speaker box and its sound can be directed slightly forward toward the front of the vehicle if desired. In doing so, a saddle or cutout is provided in the middle of the speaker box so as not to unduly inhibit the driver's vision through the rear view mirror.

Abstract: A device (8) which includes an electroacoustic transducer (7) for the acoustic reproduction of sound signals to an ear (14) of a user (2) who assumes a user position at the device. The transducer is optimized for the acoustic reproduction of speech-signal sound waves and is equipped with arrangement means (25) for realizing a distinct directivity for the speech-signal sound waves emitted by the transducer. As a result of its directivity, the transducer directs the speech-signal sound waves which it emits preferentially to the ear of a user who is in the user posture.

Abstract: A vehicle sound system encompasses a combination of speaker configuration, speaker placement, and sound processing to improve sound quality. A pair of speakers (or rows of speakers) are placed close together and located in the front of the console or dashboard with their geometric center on or near the vehicle's central axis. A sound processor acts to “spread” the sound image produced by the two closely spaced speakers by employing a cross-cancellation technique in which the cancellation signal is derived from the difference between the left and right channels. The resulting difference signal is scaled, delayed (if necessary), and spectrally modified before being added in opposite polarities to the left and right channels. The pair of speakers may be placed on a common baffle or mounting surface or in a common housing enclosure, with sound being carried through one or more ducts and emanating out of a slot.

Abstract: Disclosed are an outer mirror and a vehicle interphone having a function of transmitting a sound to the outside from a vehicle cabin or inputting a sound outside of the cabin, and having physical durability. The sound in the cabin is transmitted from a microphone-loudspeaker provided in a visor cover of the outer mirror. The sound near the visor cover, which is received by the microphone-loudspeaker, is emitted in the cabin. The microphone-loudspeaker is supported on a frame having higher rigidity than the visor cover, which is mounted to a vehicle body via an electric accommodating unit and a door mirror base.

Abstract: An output section, consisting of a pair of loudspeakers disposed adjacently to each other, is installed inside a seatback of a designated seat. Sound output surfaces of respective loudspeakers face a designated person sitting on the designated seat. It is hence easy to secure a required distance for obtaining clear acoustic image localization in accordance with the size of loudspeakers cooperatively constituting the output section.

Abstract: A combination speaker and dome lamp assembly is adapted to be mounted at the intersection of a roll bar and side bar of a vehicle equipped with such bars, such as convertible off-road vehicles.

Abstract: The invention relates to a vehicle (1) having a loudspeaker (9) for emitting sound waves (10, 11) into a passenger compartment (2) and having an air duct (7) for the air conditioning of the passenger compartment (2), the air duct (7) having an air duct opening (6) which faces the passenger compartment (2). In order to reduce the installation space for the loudspeaker (9), the invention proposes that the loudspeaker (9) is arranged in the air duct (7) in such a manner that the sound waves (10, 11) can be emitted through the air duct opening (6) into the passenger compartment (2).

Abstract: A vehicle-mounted three dimensional sound signal reproducing-silencing unit includes at least two speakers disposed for each of seats to be occupied by listeners so as to generate a three dimensional sound field space in a region inclusive of left and right external ears of each of the listeners, and three dimensional signal processing means for converting an output signal from a sound source into a three dimensional sound field signal for supplying it to each of the speakers, thereby reproducing a three dimensional sound field with rich presence for each of the seats. The unit also includes antiphase signal generating means for supplying a silencing signal to the three dimensional signal processing means, thereby silencing sounds for each of the seats without giving an effect on the other seats.

Abstract: A vehicle audio system having a subwoofer mounted in the vicinity of a rear seat is provided for permitting a user or passenger in the rear seat to receive or listen to audio information without having a sense of incongruity upon listening, even when he/she selects an audio source different from that selected on a front seat side. A vehicle audio system 10 comprises audio sources 11 to 13, an audio signal output means (including a headphone 4 for the rear seat, a subwoofer 3 disposed in the vicinity of the rear seat, and the like), an audio output selector 40 for selectively switching the audio signal from the selected source to connect it to the audio signal output means, and a controller 20. If the controller 20 detects predetermined input information while the audio signal is being provided from the subwoofer 3, the audio output selector 40 interrupts the connection of the audio signal to the subwoofer 3 based on control by the controller 20.

Abstract: A speaker mounting structure is provided in a head rest at an upper portion of a seat. A pair of left and right speakers are mounted to the head rest, which has a through-bore at a central portion so the speakers only occupy a lower half of the through-bore.

Abstract: A vehicle component for mounting in a passenger compartment of a vehicle, the component comprising a loudspeaker having an acoustic radiator capable of supporting bending wave vibration and an electromechanical force transducer mounted to the acoustic radiator to excite bending waves in the acoustic radiator to produce an acoustic output, characterized in that the transducer has an intended operative frequency range and comprises a resonant element having a frequency distribution of modes in the operative frequency range and a coupler on the resonant element for mounting the transducer to the acoustic radiator.

Abstract: A sound processing system reduces speaker distortion at high volume levels by attenuating the filter gain and/or tone of audio and mixed output signals. The sound processing system has one or more filters to attenuate the filter gain and tone in response to the high volume levels. The sound processing system also can attenuate the filter gain and tone in response to a sound pressure level, which may be provided by a microphone.

Abstract: 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 channel loudspeaker SPC. Also, two low frequency components Cn2L, Cn2R, which have a different phase mutually, are generated by causing the low frequency component Cn2 to pass through phase shifters 2, 3. An synthesized audio signal SL is generated by synthesizing the low frequency component Cn2L and the front-left channel audio signal FL, and then supplied to the front-left channel loudspeaker SPL. An synthesized audio signal SR is generated by synthesizing the low frequency component Cn2R and the front-right channel audio signal FR, and is supplied to the front-right channel loudspeaker SPR.

Abstract: Disclosed are a speaker configuration and a signal processor for stereo sound reproduction for vehicle and a vehicle having the same that can provide all of the passengers with a left-right balanced stereo sound in a vehicle. The object of the invention is to provide a balanced stereo sound to all passengers in a vehicle. According to the invention to obtain the object, a speaker configuration for stereo sound reproduction in a vehicle which has a plurality of speakers installed therein, the speaker configuration comprises a first speaker provided in the left of a front central part of the vehicle for receiving a right channel output; and a second speaker provided in the right of the front central part of the vehicle for receiving a left channel output.

Abstract: An automotive audio reproducing apparatus according to the present invention comprises: a sound image position correction circuit 52 for converting a left-channel input digital audio signal XL(Z) and a right-channel input digital audio signal XR(Z) into a digital audio signal YL(Z) and a digital audio signal YR(Z), respectively, for output expressed by: YL(Z)·GLL(Z)+YR(Z)·GLR(Z)=XL(Z)·FLL(Z)+XR(Z)·FLR(Z) YR(Z)·GLL(Z)+YL(Z)·GLR(Z)=XR(Z)·FLL(Z)+XL(Z)·FLR(Z) where FLL(Z) to GLR(Z) are given head related transfer functions; a depth correction circuit 53 for adding reflected sound signals to the signals YL(Z) and YR(Z), respectively; a D/A converter circuit 6 for subjecting output signals of the correction circuit 53 to D/A conversion; and a level control circuit 522 for controlling level of a difference signal in the sound image position correction circuit 52; whereby analog audio signals outputted from the D/A converter

Abstract: A vehicle-carried sound reproduction system which reproduces a sound image forwardly of a passenger of a vehicle in which it is incorporated.

Abstract: A digital sound processing design system for a vehicle audio system includes a computer and a design tool that is run by the computer. The design tool allows a user to define sound processing criteria that is stored in a template file. An audio signal processor is connected to the first and second real channel inputs of an audio source. Memory that is coupled to the audio signal processor stores the template file. The sound processing engine that is coupled to the audio signal processor and the memory reads the template file at run-time to obtain the sound processing criteria. The sound processing engine applies the sound processing criteria to the first and second real channel inputs. The design tool allows a user to create virtual channel inputs and outputs that are based, in part, on the first and second real channel inputs.

Abstract: A rear speaker and a front speaker are provided in a room. A microphone is disposed at a listening position between the front and rear speakers for picking up a first sound from the front speakers and a second sound from the rear speaker. Time lags of the first sound and the second sound is obtained from the outputs of the microphone, and the time difference between the time lags is obtained. An antiphase audio signal opposite to a reflected composite signal included in the first sound picked up by the microphone is provided by the sound field correcting circuit. The antiphase audio signal with the same amplitude is delayed based on the time difference and emitted from the rear speaker so as to cancel the reflected composite signal.

Abstract: 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 audio channel signal source; a first electroacoustical transducer coupled to the first directional audio signal source and to the surround audio channel source, situated forward of the second passenger location and behind the first passenger location. The first electroacoustical transducer radiates sound waves corresponding to audio signals from the first directional audio channel signal source and corresponding to audio signals from the surround audio channel signal source. The system further includes a second electroacoustical transducer coupled to the first directional audio signal source, situated forward of the first electroacoustical transducer.

Abstract: An audio system for projecting sound toward a rear opening of an automotive vehicle is disclosed. Each side of the vehicle includes a speaker assembly mounted to a side interior wall between a side door and the rear opening of the vehicle. The assemblies each include a speaker housing containing a forwardly disposed speaker cone with an axis generally perpendicular to the vehicle side and a rearwardly disposed speaker cone with an axis disposed toward the rear opening at an angle of about 15 degrees relative to the forwardly disposed speaker cone axis. An audio transmitter is in signaling communication with each of the speaker cones for driving the speaker cones.

Abstract: An audio system, in particular for motor vehicles, having a loudspeaker installation for supplying sound to an audio chamber and a control unit with a signal detection unit for receiving microphone signals from at least one microphone exposed to the audio chamber outputting the signal to an evaluation unit which extracts interference signals from the microphone signals. The control unit produces control signals on the basis of these interference signals in order to operate the loudspeaker installation. To reduce the complexity for installation of such an audio system, at least one tweeter is connected in the loudspeaker installation as a microphone.

Abstract: An automotive multimedia entertainment system includes an integrated rear seat entertainment module in which audio signals coordinated with video entertainment devices in the rear seat can be reproduced using the vehicle's audio system. Multiplex control signals between an audio main control unit, rear seat entertainment module, and CD disc jockey allows free selection of sources for single and dual play modes. By sharing an external audio input of the main control unit, between the rear seat entertainment module and the CD disc jockey, a single version of the main control unit can be used in vehicles either with or without rear seat entertainment modules or CD disc jockeys.

Abstract: A vehicle remote control system includes a remote transmitter to be carried by a user, a receiver at the vehicle for receiving signals from the remote transmitter, an audible signal generator at the vehicle, and a controller connected to the receiver and being operable in response to a received signal. Moreover, the controller is also preferably connected to the audible signal generator for-causing generation of an audible signal based upon a received signal, and wherein the audible signal has at least one characteristic based on the transmission distance so that the audible signal is less intrusive for a shorter transmission distance. For example, the controller may determine the transmission distance based upon the received signal strength. In addition, the at least one characteristic may comprise one or more of a volume, duration, or frequency of the audible signal. The audible signal generation may be used for a vehicle security system, a remote keyless entry system, and/or a remote start system.

Abstract: A speaker system for use in an automobile vehicle, comprises: pair of side speakers disposed on left and right sides in a front section within the automobile vehicle; a central speaker disposed in a middle position between the two side speakers; a pair of delay circuits connected on two signal lines leading to the side speakers disposed on the left and right sides within the vehicle; an adder connected between the left and right channels to add together the electric signals transmitted from the left and right channels so as to produce a sum signal; and a band pass filter connected on a signal line leading to the central speaker, said band pass filter being constructed and adjusted to eliminate a high frequency signal component. The sum signal fed from the adder is passed through the band pass filter before being applied to the central speaker.