Abstract: Disclosed is an antenna-speaker assembly, including an antenna unit including a radiator, a speaker unit including a speaker and coupled to the antenna unit, and a sound-absorbing part formed to conform to a circumference of a coupling surface of the antenna unit and the speaker unit, the sound-absorbing part being interposed between the antenna unit and the speaker unit. According to the present invention, the antenna-speaker assembly equipped with the structure of generating clear sound is provided. Furthermore, in a wireless communication device including an antenna-speaker assembly, the antenna-speaker assembly include an antenna unit including a radiator, a speaker unit including a speaker and coupled to the antenna unit, and a sound-absorbing material formed on a circumference of a face where the antenna unit and the speaker unit are coupled in such a manner as to be interposed between the antenna unit and the speaker unit.

Abstract: A balanced armature apparatus is disclosed that includes dual transducers for generating sound waves in response to electric audio signals. The dual transducers include a motor assembly coupled to a diaphragm. A housing defines an interior chamber and the motor assembly and the diaphragm are positioned within the interior chamber. A pair of acoustic output ports is located in a respective end of the housing. A low pass acoustic filter is in communication with one of the acoustic output ports that is operable to attenuate a predetermined range of frequencies from an audio signal produced by one of the diaphragms.

Abstract: An exemplary embodiment of an acoustic sensor system includes a housing structure, and a miniaturized acoustic transducer mounted in the housing structure. A flame arrestor structure is mounted on or within the housing structure between the acoustic transducer and the external environment, so that ambient acoustic energy passes through the flame arrestor structure before reaching the acoustic transducer.

Abstract: A loudspeaker damper, a manufacturing method thereof, and a loudspeaker, electronic equipment and device using the loudspeaker damper. The damper has flexibility. Therefore, even if a large input is applied and the damper oscillates with a large amplitude, a resin layer provided on the surface of the damper base material is not cracked due to partial interface peeling. Thus, the damper follows such a large amplitude and realizes high input-resistance. This loudspeaker damper material is obtained by impregnating a material with thermosetting resin including 2 to 20 wt % of flexibility imparting agent and heat-curing thereof.

Abstract: At least one exemplary embodiment is directed to an acoustic Dose system comprising: a first device configured to measure sound pressure levels directed to an ear drum; and a second device configured to convert the sound pressure levels into a sound pressure level dose, where the second device sends a notification signal to a third device if the sound pressure level dose is larger than a threshold value.

Abstract: A loudspeaker system includes a loudspeaker, a sound wave guiding portion that has an opening portion, and guides a sound emitted from the loudspeaker to radiate the sound from the opening portion, and a thermal change portion that is provided on the sound wave guiding portion to form a temperature gradient in a space in the sound wave guiding portion.

Abstract: Matching layers are provided, including: electrically conductive acoustic matching layers, methods for conducting electric current through matching layers, methods for manufacturing multi-dimensional arrays using conductive matching layers, and multi-dimensional arrays with electrically conducting matching layers. Matching layers with conductors aligned for providing electrical conduction through the thickness or range dimension of the matching layer are provided. For example, vias, aligned magnetic particles, or conductive films at least partially or entirely within the matching layer of each element allow electrical conduction from the transducer material to a ground foil or flex circuit. By using multiple electrical conductive matching layers, a gradation in acoustic impedance for better matching is provided while allowing dicing of the entire stack, including the matching layers and the electroceramic material, in one step.

Abstract: A process and kit is provided for retro-installing a speaker enclosure for a wall mounted speaker. The process includes mounting a selected speaker surround member in a building wall between the front and back wall surfaces and between the wall studs and around the opening for a wall mounted speaker and adhesively mounting a selected sheet of vibration dampening material to the back wall surface behind the opening for the wall mounted speaker and attaching a flexible sound absorbent material to the vibration dampening material so that a wall mounted speaker enclosure is installed in an existing building wall.

Abstract: A loudspeaker cabinet with a laminated internal brace which has a first rigid layer coupled to a first exterior panel of the cabinet, a second rigid layer coupled to an a second exterior panel of the cabinet, and a damping layer affixed between the rigid layers where they overlap. Vibration, flexure, and expansion/contraction of the cabinet are damped by shearing forces applied to the damping layer as the rigid layers move in opposite, parallel directions.

Abstract: A speaker module (200) having a speaker unit (210) and a speaker box (220) is provided. The speaker module is mounted in a casing (22) of a hand-held electronic device (20). The speaker box (220) has a wall defining an aperture (222a) receiving the speaker unit therein. The speaker box has a neck section (224) formed by narrowing a peripheral wall of the speaker box. The neck section connects front and rear speaker chambers (222, 226) each of which has a cross-sectional dimension larger than that of the neck section. The speaker module is mounted on a printed circuit board (24) by fitting the neck section in a hole (24a) of the printed circuit board. The speaker unit is mounted in a front wall of the front chamber (222). An antenna module (26) is mounted in the casing behind the speaker module.

Abstract: The invention relates to an enclosure with a substantial rectangular configuration, adapted to contain an apparatus sensitive to acoustic vibrations, the enclosure comprising walls and acoustic damping material located within the wall, wherein the acoustic damping material comprises at least one absorbing body of acoustic energy absorbing material located adjacent to a rib of the enclosure. The acoustic vibrations most disturbing the processes in the apparatus within the enclosure are caused by standing acoustic waves within the enclosure with frequencies in the range between 50 Hz and 1000 Hz. These acoustic waves are efficiently damped by the provision of a block of acoustic absorbing material adjacent to one of the ribs of the enclosure, to such an extent that the need for thick walls of the enclosure is substantially obviated, leading to a less voluminous enclosure.

Abstract: A mechanical device is tuned using a tunable damping rod. The tunable damping rod can have its tension increased between its respective engines, to in order to increase the resonant frequency of the mechanical device. Different aspects may also be included; the mechanical device may include a constrained layer damping material, which constraints certain mechanical vibrations. The tuning may tuned the mechanical device to reach that vibration.

Abstract: A thermally conductive chimney tube extends through a loudspeaker cabinet that encloses a volume of air heated by a speaker driver. The open ends of the chimney are outside the cabinet. A column of air within the chimney is in contact with the external ambient air, but sealed off from the enclosed volume of air. As the speaker driver heats the enclosed volume of air, the material of the chimney transfers the heat to the column of air, which rises and carries the heat away into the external ambient air, cooling the inside of the loudspeaker cabinet and thus cooling the speaker driver.

Abstract: A method and apparatus for reducing the acoustic coupling between a sound receiving transducer and a sound transmitting transducer is disclosed. A housing, wherein the receiving transducer and the transmitting transducer are mounted, is provided to increase the acoustic separation between the receiving transducer and the transmitting transducer. The housing has a surface, which may have an acoustic impedance condition, which is preferably resistive. The housing may further act as a barrier structure between the receiving transducer and the transmitting transducer.

Abstract: The acoustic enclosure comprises a box, on which is mounted at least one electro-acoustic transducer, and a vent which together with the box produces a bass-reflex system with a specified bass-reflex resonant frequency. The vent comprises means of attenuation at the bass-reflex resonant frequency. Included is an audiovisual apparatus comprising a display device and such an enclosure.

Abstract: A method of improving the modal resonance frequency distribution of a panel (2) for a distribution resonant mode bending wave acoustic device involves analysing the distribution of the modal resonance frequencies of the panel, identifying a modal resonance frequency that is non-uniformly spaced relative to adjacent modal resonance frequencies, identifying a location on said panel that exhibits anti-nodal behaviour at said modal resonance frequency and changing the local impedance to bending wave vibration at said location (6). The method has particular application to distributed mode loudspeakers (1).

Abstract: An anti-resonant structure for speakers includes a resonant structure which has a housing compartment, at least one elastic element located in the housing compartment that has one end fastening to the resonant structure and another end coupling with a speaker, and at least one buffer element located between the resonant structure and the elastic element to serve as a buffer interface to prevent the speaker from hitting due to elastic element and the resonant structure. The speaker is the element that generates vibration. The elastic element has an elastic section to absorb the vibration energy generated by the speaker to prevent the resonant structure from generating unwanted resonance and noises, and prevent electronic elements from being damaged by the resonant effect.

Abstract: A small-sized speaker system having a very excellent bass-range reproduction capability includes a sound radiation component for guiding acoustic waves radiated from the speaker units to a free space by causing a larger degree of air compression and expansion than in the case where acoustic waves are directly radiated to the free space with the speaker units mounted in corresponding enclosures of the same shape as the speaker units. The speaker system has 20% or more lower f0 than in the case where acoustic waves are directly radiated to the free space with the speaker units mounted in corresponding enclosures of the same shape as the speaker units.

Abstract: A piezoelectric transducer comprises a piezoelectric component, an acoustic member attached to one of the surfaces of the piezoelectric component and a dampening material of low elastic modulus attached to one or both surfaces of the piezoelectric transducer. The piezoelectric component may comprise either an unimorph or a bimorph structure including a piezoceramic wafer made of lead zirconate titanate and a layer of dampening material sandwiched between the piezoelectric component and the acoustic member. The acoustic member comprises a surrounding wall portion and an end portion which form an acoustic chamber when the member is mounted on a surface of the piezoelectrie component. The end portion has an orifice to form a passageway from the chamber through the end portion to the outside of the member.

Abstract: A sound transmitter includes at least a vibrating membrane mounted on the wall of an enclosure so that one surface of the speaker membrane radiates in the enclosure, the enclosure being provided with a vent forming a conduit between an outlet inside the enclosure and an outlet outside the enclosure. The vent comprises aerodynamic turbulence attenuating elements at least at one of the outlets, the turbulence resulting from an air stream caused by the large amplitude displacements of the membrane. The invention also concerns a sound transmitter wherein air moves in a conduit (33) extending from the membrane to an outlet (35) of the conduit (33) on the outside. The invention further concerns a speaker whereof the members have an aerodynamic shape.

Abstract: A dipole radiating dynamic speaker design comprises a diaphragm (32) providing a surface for radiating acoustic output, a voice coil assembly (36) for driving the diaphragm, and a magnet system for providing magnetic flux across the voice coil assembly. The speaker incorporates a vented pole flux conductor (42) and a vent adjacent to the diaphragm permitting the rearward acoustic output to propagate away from the diaphragm producing acoustic output as a dipole radiator. A method of utilizing the dipole radiating dynamic speaker design for tweeter and mid-range speaker applications used in home, automotive, and professional audio systems is disclosed. In addition a novel enclosure design is disclosed that utilizes a front panel perimeter vent providing improvement of audio reproduction quality for mid-range speaker applications.

Abstract: A small-sized speaker system having extremely excellent bass range reproduction capability comprises a speaker unit provided in a closed box and a sound guide through which sound radiated from the speaker unit is guided into the free space so as to cause compression and expansion of air in an extent greater than that in which the speaker unit is provided in a closed box of the same shape but sound is radiated directly into the free space. The f0 of the speaker system is 20% or more lower than that of when the speaker unit is provided in a closed box of the same shape but sound is radiated directly into the free space.

Abstract: The invention concerns a sound transmitter comprising at least a vibrating membrane mounted on the wall of an enclosure so that one surface of the speaker membrane radiates in the enclosure, the enclosure being provided with a vent forming a conduit between an outlet inside the enclosure and an outlet outside the enclosure. The invention is characterised in that the vent comprises aerodynamic turbulence attenuating means at least at one of the outlets, said turbulence resulting from an air stream caused by the large amplitude displacements of the membrane. The invention also concerns a sound transmitter wherein air moves in a conduit (33) extending from the membrane to an outlet (35) of the conduit (33) on the outside. The invention further concerns a speaker whereof the members have an aerodynamic shape.

Abstract: A driver unit is fixed to a stand. A front box and a rear box are directly fitted to the stand through a buffer material. A box comes into contact with the driver unit through a buffer material and is fixed to the stand. Therefore, sound of the driver unit is not transmitted to the box and the drop of sound quality of the speaker can be prevented. The driver unit is fixed to the stand at an immovable foundation, and sound energy can be efficiently transmitted from a speaker cone to the air.

Abstract: Disclosed is a multiple damping device of a speaker system for a video display equipment which is capable of having an improved multiple damping structure in the speaker system to thereby achieve a low howling and a high quality of sound. The multiple damping device of the speaker system includes: a cover frame united-type speaker, a back cover assembled at the back portion of the cover frame united-type speaker and installing a damping member fitting portion, at the top and bottom portions thereof, respectively, and a multiple damping part adapted to be installed between the cover frame united-type speaker and a cabinet to thereby cut the transmission of the vibration generated upon the operation of the speaker system to the cabinet.

Abstract: This invention addresses a fundamental weakness in currently common microphones, and their applications in feedback for audio speaker systems. This limitation stems from the fundamental difficulties of typical membrane-type microphones in the frequency range 1-100 Hz. The self-noise of membrane-type microphones increases in this range approximately as 1/f, and membrane-type microphones are sensitive to parasitic inertial vibrations, which are usually very important in this frequency range. The removal of these limitations enables the use of such a sensor (APV sensor) for effective feedback in audio speakers, dramatically improving performance in the low-frequency range of 10-100 Hz. Without feedback, typical audio speakers suffer severe attenuation and/or distortion in this range.

Abstract: A bass reflex loudspeaker system capable of optimized sub-bass (<100 Hz) response. The loudspeaker system incorporates a closed cabinet, an electromechanical driver, a virtual acoustic radial transmission line (VARTL), a reactive alternate density transmission medium (ADTM) load and a radial right angle wave guide (RRAWG). The VARTL is disposed around and in front of the cone of the driver so as to allow the driver to maintain loading to very low frequencies, while simultaneously isolating the driver from reflected signals, acoustic summation or stimulus. The ADTM slows the speed of the wave, thereby causing delay and intentional attenuation of the initial waveform while, by way of radial expansion, allows the proper exit velocity. The RRAWG acts as a guide and is disposed within the VARTL to introduce the signal into the throat of the VARTL, thereby allowing the cone to drive the port air mass and the VARTL air mass with essentially equal pressure on each cycle throughout the frequency range of the VARTL.

Abstract: The present invention relates to a speaker device or the like capable of stably providing desired directivity provided by a combination of omnidirectionality and bidirectionality down to ultra low frequencies. A speaker (22) is attached to one end face of a speaker box (21) and a sound wave radiation port (23) in a circular shape covered with acoustic resistance material (24) is installed at other end face thereof. The sound wave radiation port (23) is for radiating air vibration produced by a rear face of a speaker diaphragm to outside as sound wave and an axis penetrating the center extends in a direction of a principal axis (reference axis) of the speaker (22). A low pass filter is constituted by acoustic resistance and acoustic mass of the sound wave radiation port (23) and acoustic mass provided by air in the speaker box and a directivity is provided by utilizing group delay time in a pass band of sound wave radiated from the sound wave radiation port (23) via the low pass filter.

Abstract: The invention relates to a headphone with one right housing and one left housing, which are associated with a user's ears. These housings are provided-with acoustic baffles in which there. are disposed dynamic sound transducers, each of which comprises a tweeter and a mid/woofer disposed coaxially therewith. To ensure that the localization of auditory events reproduced by this headphone can be controlled selectively, the acoustic baffle in each housing is provided with a first high damping portion which, relative to the center of the sound transducer, covers a region of more than 170 degrees and less than 340 degrees of the mid/woofer. The remaining region is a cutout for the tweeter and leaves uncovered a substantially V-shaped region with an apex angle of smaller than 170 degrees and larger than 20 degrees. There is also a second high damping portion, which is disposed in the region of the apex of the V-shaped region which leaves between 5% and 50% of the tweeter covered.

Abstract: Transducer (100, 200, 300, 500, 600) for converting mechanical vibrations to an electrical signal and/or for converting an electrical signal to mechanical vibration. Damping liquid (122, 222, 522, 622) damps the relative vibration of transducer components (110, 250, 252, 254, 510, 610). The damping liquid can be selected to optimize the sound quality of acoustic vibrations at the point of transduction. Also, a transducer with components that rotate relative to each other (304, 310, 504, 510, 604, 610). For example, a permanent magnet component may simultaneous vibrate rotationally and linearly with respect to an electric signal carrying coil. The characteristics of the rotational vibration may be adjusted to optimize sound quality of acoustic vibrations at the point of transduction.

Abstract: An electronic device has a loudspeaker unit and a casing with a support, which receives the loudspeaker unit, and with a wall perpendicular to the mounting direction of the loudspeaker unit in the support.

Abstract: The present invention relates to a loudspeaker (480), comprising: a support (483); a sound-generating element (481) mounted to the support for vibration to generate sound; and an electro-active device (485) coupled between the support and the sound-generating element for vibrating the sound-generating element (481) in response to an electrical signal.

Abstract: The invention provides a close-talking type microphone which can shut a sound under a loud sound environment and does not make it hard or impossible for receivers to recognize a target sound due to a significant reduction of a quality of receiving the target sound. The microphone is provided with an outer casing having an open front surface, an inner casing having a front wall provided with a sound hole in a center portion, the front wall closing the front surface, having a space on a peripheral surface and a rear surface, and inserted to the outer casing, a sound pressure-electricity conversion unit fitted and held in the inner casing so as to direct a vibrating body toward the sound hole and a porous cap member covering the front surface of the front wall. The inner casing is made of a vibration isolating material, and the space is filled with a sound absorbing material constituted of a fiber laminated material.

Abstract: A novel cap for a telephone unit is provided to de-couple the loudspeaker diaphragm from the acoustic resonance in the enclosure and dampen the first resonant frequency of the diaphragm. The cap has a flange located at an outer edge thereof and a cavity provided in the cap. The cap cavity is sized to house an acoustical speaker that is directed outwardly through an aperture in an outer casing of the telephone unit. The flange of the cap is coupled to the outer casing so that the cap covers the aperture. A gap is provided between the cap and the outer casing.

Abstract: An apparatus for a microphone and speaker is provided which provides a sealed chamber behind the speaker to prevent sound waves behind the speaker from cancelling sound waves in front of the speaker. In addition, the apparatus is configured to mechanically isolate the speaker from the apparatus housing in order to improve performance of the system. A pliant material such as a damping material with a relatively linear compression characteristic, such as a thermal plastic elastomer, may be used to isolate the speaker from the apparatus housing as well as providing a relatively air tight chamber behind the speaker.

Abstract: A loudspeaker enclosure includes a rectangular cabinet having an acoustical port mounted in one of the vertical walls. A loudspeaker is installed in a bottom wall of the cabinet facing away from an interior volume of the cabinet. A highly resistive acoustic foam is positioned in front of the loudspeaker to restrict the direct radiation of the loudspeaker, so that the usable acoustic radiation emanates from the acoustical port.

Abstract: The present invention concerns the reduction of vibrations of a loudspeaker enclosure caused by the mechanical vibrations of the dynamic loudspeaker element by virtue of attaching one or more additional masses to the loudspeaker driver unit using elastic and lossy means. The masses with their elastic attachments dimensioned according to the present invention resonate at frequencies excited by the vibrations of the loudspeaker element at frequencies where the reduction of the amount of vibration is desired. The magnitude of vibration coupled to the enclosure of a loudspeaker modified according to the present invention is significantly smaller than that of a conventional loudspeaker. Furthermore, it is technically and economically advantageous to implement the reduction of mechanical vibrations according to the present invention.

Abstract: A sound quality improving mechanism for a loudspeaker is proposed, in which a hollow annular component is deposited with a vibration-absorbing material therein. A plurality of conductive components are each disposed in a manner as to penetrate the hollow annular component in a diametrical direction, for allowing the hollow annular component to be held in place at a back end of a loudspeaker in a manner that the conductive components abut a peripheral surface of the back end of the loudspeaker, and for conducting vibration at the back end of the loudspeaker in a diametrical direction to the hollow annular component to be absorbed by the vibration-absorbing material, so as to improve the sound quality of the loudspeaker.

Abstract: A structure and method for absorbing and shielding sound from a source of sound are disclosed having at least four layers including a first panel layer 2, a sound absorbing material layer 3, a first air layer 4 and a second panel layer 6, which are located in a sequence from a source of sound. The sound absorbing material layer 3 has a ventilating property.

Abstract: An audio system has a cabinet with several partitions. The partitions divide the interior of the cabinet into compartments. These include an input compartment, an output compartment above the input compartment, an outer compartment to one side of the input and output compartments, and an intermediate compartment between the outer compartment and the input and output compartments. Two tweeters are mounted one above the other in the outer compartment as are two midrange speakers. The outputs of the midrange speakers open into the intermediate compartment while the outputs of the tweeters open to the atmosphere. A woofer or subwoofer is mounted on a partition which borders the input compartment, and the output of the woofer or subwoofer opens into the input compartment. The output compartment is provided with a port, and a pair of pipes connects the input compartment with the output compartment.

Abstract: An apparatus for protecting equipment in an outdoor communication structure from adverse weather conditions, vibration, and vandalism includes a housing that possesses hidden lip door edges and is assembled such that no screws, nuts, hinges, etc. are left exposed. Also, any speakers and/or microphones are largely isolated from potential vibration by surrounding them with vibration dampeners such as foam or other padding or insulation. Heat, dust intake, vibration, and electricity usage are reduced by providing convection venting wherein the internal cavity of the housing narrows at a top region of the housing. Vents in the top region of the housing allow air from the narrowed internal cavity to escape as it heats and expands. As hot air is displaced from the narrowed internal cavity, cooler ambient air is drawn into the internal cavity through bottom vents in a bottom region of the housing.

Abstract: The television having a device for preventing vibration of speaker comprises a speaker. The speaker is fixed on one wall toward a hollow portion formed in an enclosure, and an opening for emitting sound is formed on the enclosure. A vibration plate faces the speaker to be positioned in the opening at a predetermined interval from the speaker. And, a mounting means for mounting the vibration plate on the enclosure is provided. Therefore, vibration of speaker emitting medium/low bandwidth sound outside and vibration of cabinet in which the speaker is mounted is minimized so that quality of sound becomes high and sound having high power is emitted outside.

Abstract: A speaker has a substantially reduced overall size while producing a complete low frequency sound range at high output amplitude. The speaker includes a main body having open sections at both ends thereof. A sounding body pinched by ringed first dampers is secured to each of the open sections of the main body so that the inside of the main body is kept air-tight. A first opening is provided at the middle part of the side of the main body. Lid members are secured on the outside of the two sounding bodies via a ringed second damper so as to keep the inside of the lid member air-tight. A second opening is created around the middle of the bottom of each of the lid members. A disc-like membrane is secured to the second dampers such that the lid members cover the membranes and cover the open section of the main body to keep the inside of the lid members air-tight.

Abstract: An acoustic enclosure system for a loudspeaker includes a central chamber and two end chambers. The central chamber is separated from each of the end chambers by a common wall. Two loudspeakers are mounted in the central chamber such that one speaker is mounted in each of the horizontal walls and the speakers face away from each other. The central chamber has a port in a side wall that is open to the outside of the enclosure. Each of the end chambers contains a fluid chamber with a flexible bladder that is filled with fluid and maintained in the end chamber a given distance from the corresponding loudspeaker. Each of the bladders contacts the interior surfaces of the side walls and end piece that form the fluid chamber. A flexible support is provided underneath each of the bladders so that the bladders are each substantially maintained a specified distance from the horizontal walls.

Abstract: An arrangement for minimizing acoustic reflections and diffraction from an exterior surface of a diaphragm of a loudspeaker transducer. A layer of highly optimized acoustic foam is applied to an exterior surface of the transducer diaphragm. The acoustic foam is a polyether urethane material of approximately 2 lb/ft.sup.3 density with a skinned bottom surface, optional skinned top surface and optimized cell size and structure. The foam is die cut into a shape to conform to the concave shape of the transducer diaphragm without large air gaps or deformation of the foam. The acoustic foam surface prevents reflection and diffraction of another transducer's output off of the diaphragm of the treated transducer and provides a low pass filtering of the acoustic output of the treated transducer.

Abstract: The present invention provides a small electroacoustic transducer which is improved in sound characteristic by enlarging and adjusting a volume of a resonance space. A second resonant chamber as an auxiliary space is formed relative to a first resonant chamber formed in front of a resonance plate, wherein the first and second resonant chambers are connected with each other to enlarge the volume of the resonant volume.

Abstract: In accordance with the invention, there is provided a tapered slot coupler combined with a loudspeaker for providing a high degree of uniform angular sound distribution in the horizontal plane, and a sharp cut-off above the horizontal plane through the coupler-speaker combination. It also sends a greater amount of sound energy to the furthest point of the domain and diminishing energy in direction to the interior of the domain as one comes closer and closer to the sound source. A sound reproduction system cooperating with the coupler-speaker combination has a receiving domain for receiving the sound, a perimeter defining the domain, and a plurality of tapered slot high and medium frequency coupler-speakers disposed proximal to the perimeter facing the domain, and a plurality of low frequency loudspeakers also disposed along the perimeter facing the domain, wherein the high/medium frequency loudspeakers are of the tapered slot coupler-speaker combination type.

Abstract: An audio induced interference suppression apparatus for a video display appliance capable of suppressing an audio induced interference which may be produced in a color picture tube (CPT) due to the transfer of vibrations arising from the output of a loudspeaker by absorbing and dampening the vibrations to be transferred to the CPT. The apparatus includes a CPT main body, a vibration-absorbing plate, attached to a bottom of the main body, for absorbing vibrations transferred to the main body, a supporter, fixed to a bottom of the vibration-absorbing plate, for supporting the main body, a tilting swivel which is in spherical contact with a bottom of the supporter to adjust tilting and rotation of the main body, and loudspeaker cases fixed to both sides of the supporter.

Abstract: A pad structure for speaker cabinet includes a lower disk having a plurality of recesses defined in a top surface thereof, an upper disk having a corresponding number of recesses defined at positions on a bottom surface thereof facing to the recesses of the lower disk, respectively, and a corresponding number of balls. Each of the balls is sandwiched between one of the recesses of the lower disk and a corresponding one of the recesses of the upper disk. The pad structure is put under the speaker cabinet to reduce the vibration generated by the cabinet when the speaker produces sound, provide the reaction force necessary for the speaker when producing sound and effectively insulate the cabinet from the vibration due to the natural resonance of the place where the cabinet is positioned.

Abstract: A high resolution computer visual display monitor employing a cathode ray tube (CRT) having a vertical aperture grill intended for personal computer systems and integrating a high quality stereophonic speaker system and a directional microphone, and methods for construction of same. The aperture grill has a natural frequency centered within the musical scale. The stereo speaker system comprises a ported speaker enclosure within which are mounted two conventional cone speaker assemblies. A stereo audio amplifier and control unit for controlling the audio signals delivered to the speakers is mounted within the speaker enclosure. The speaker enclosure is internally mounted within the monitor with a minimum number of attachment members incorporating vibration isolation material to remove vibration components near the natural frequency of the aperture grill.