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7623670 |
Waveguide electroacoustical transducing
A waveguide system for radiating sound waves. The system includes a low loss waveguide for transmitting sound waves, having walls are tapered so that said cross-sectional area of the exit end is...
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7617794 |
One piece horn cover
A horn assembly for a motor vehicle includes a sound generating member, a housing having a first opening connected to the sound generating member and a second opening to disperse sound from the...
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7590257 |
Axially propagating horn array for a loudspeaker
A speaker system including a first and a second horn, each having a respective acoustic driver and a respective planar mouth and a respective throat operationally connected between the respective...
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7506721 |
Convertible folded horn enclosure
A low frequency exponential bass horn enclosure employing a large area unitary throat pathway, bifurcated at a substantially parabolic rearward channel wall, convertible to a front-loaded or...
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7467071 |
Waveguide modeling and design system
This invention provides a method for designing a waveguide profile based upon predicted performance measurements of the waveguide. The method involves establishing a design metric, such as the...
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7466837 |
Diffuser and speaker using the same
A spherical wave generating diffuser positioned in front of the sound emission side of a sound source. The diffuser comprises an inner horn and an outer horn positioned concentrically around the...
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7426281 |
Electrodynamic acoustic transducer
The invention relates to an acoustic transducer generating a sound radiation by compression and expansion of an air mass situated between a mobile membrane and a fixed surface or between two mobile...
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7392880 |
Dual range horn with acoustic crossover
A new approach has been developed to combine mid-range and high frequency sound into the throat of a horn designed for sound reinforcement. An acoustic low pass filter element is interposed between...
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7352875 |
Speaker apparatus
The present invention provides a speaker apparatus which has a simple structure and a high directivity and which can emit sound. The speaker apparatus includes a hood having an opening at a front...
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7297238 |
Ultrasonic energy system and method including a ceramic horn
An acoustic system for applying vibratory energy including a horn connected to an ultrasonic energy source. The horn defines an overall length and wavelength, and at least a leading section thereof...
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7275621 |
Skew horn for a loudspeaker
A horn including a substantially flat coupling flange defining a coupling flange plane, a substantially planar mouth defining a mouth plane, an elongated throat extending between the coupling...
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7268467 |
Acoustic transducer
An acoustic transducer provided with at least one sound source for generating an acoustic centre and a predetermined construction for guiding sound generated by the acoustic centre, which acoustic...
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7252176 |
Reflex-ported folded horn enclosure
A low frequency exponential/hyperbolic hybrid folded horn enclosure intended for use in proximity with at least one planar surface, such as a floor, ceiling, or wall, with access to the horn throat...
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7236606 |
Sound system having a HF horn coaxially aligned in the mouth of a midrange horn
A sound system is provided that groups a midrange horn with a high frequency (“H”) horn. The sound system includes an HF horn coaxially coupled to a midrange horn, and two HF drivers aligned...
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7203329 |
Audio speaker system employing an axi-symmetrical horn with wide dispersion angle characteristics over an extended frequency range
A speaker system includes a speaker driver loaded by a horn waveguide. The speaker driver reproduces sound within an extended frequency range that includes a high frequency band between 8 kHz and...
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7178629 |
Electroacoustic public address unit with acoustic horn or waveguide
A horn or waveguide public address unit, enabling to adapt the dispersion characteristics of the horn or waveguide. The unit is provided with at least one profiling component ( 21 a , 21 b )...
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7177437 |
Multiple aperture diffraction device
A horn assembly for high frequency acoustic speakers. In an array of speakers, a spacing between adjacent speakers needs to be less than the wavelength of sound being emitted in order to combine...
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7142680 |
Multiple waveguide coaxial ceiling loudspeaker
A flush mountable ceiling speaker ( 10 ) with individual coaxial waveguides ( 20, 22 ) for both the lower and high-frequency transducers ( 11, 12 ). The lower frequency radiation is combined with...
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7095868 |
Phase plug with optimum aperture shapes
A phase plug for optimally matching a drive-unit's diaphragm to the throat of a waveguide is disclosed. Specific embodiments of a circular diaphragm matched to an elliptical waveguide and a...
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7072481 |
Two-stage phasing plug system in a compression driver
This invention provides a two-stage phasing plug located within a compression driver. The two-stage phasing plug housed within the compression driver may be coupled to a horn. The two-stage phasing...
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7068805 |
Acoustic waveguide for controlled sound radiation
Acoustic waveguide contours that approximate either or both of the Elliptic Cylinder and the Prolate Spheroidal coordinate systems that allows for a more accurate prediction and control over the...
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7044265 |
Constant directivity acoustic horn
An improved throat ( 2 ) for transmitting acoustic energy from a source driver unit ( 7 ) to a feeder section ( 3 ) of a directivity controlling acoustic horn is disclosed. The throat ( 2 )...
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7039211 |
Horn-loaded compression driver system
A horn-loaded compression driver or a loudspeaker has a phasing plug with multiple slots and a common annular chamber. The slots extend from an inlet side to the common annular chamber, which...
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7027605 |
Mid-range loudspeaker
A midrange loudspeaker for operation in conjunction with low-frequency and high-frequency loudspeaker modules in a theater sound system, having a reduced depth for deployment in limited space. The...
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7010138 |
Loudspeakers
A loudspeaker comprising a phase uncorrelated diffuse sound source and a duct or wave guide coupled to the sound source to direct acoustic energy from the source, the duct or wave guide having a...
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6981570 |
Loudspeaker system with common low and high frequency horn mounting
The invention relates generally to the field of audio loudspeaker enclosures, and more particularly to a method of mounting the internal components in the loudspeaker so as to control the...
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6959093 |
Low frequency active noise control
A noise attenuation system ( 10 ) for an air induction system ( 12 ) includes an air inlet duct ( 16 ) having an open end ( 18 ) to draw in air and a loudspeaker ( 22 ) mounted within the inlet...
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6950530 |
Directional loudspeaker unit
A directional loudspeaker unit for reproducing mid-range audio frequencies, comprising a cone loudspeaker and, disposed forwardly of the surface of the cone of the loudspeaker, a phase plug and a...
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6771787 |
Waveguide electroacoustical transducing
A waveguide system for radiating sound waves. The system includes a low loss waveguide for transmitting sound waves, having walls are tapered so that said crosssectional area of the exit end is...
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6754360 |
Signal-horn
A signal-horn has an electromagnetically actuated oscillating membrane coupled to an acoustic amplifier having a volute wound duct formed of a first length with generally constant section having an...
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6744899 |
Direct coupling of waveguide to compression driver having matching slot shaped throats
There is disclosed an acoustic driver having a phasing and compression plug and its direct coupling to an acoustic waveguide having an entry throat with a non-unity aspect ratio, such as a...
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6658128 |
Horn loudspeaker
An electroacoustic transducer of a horn loudspeaker emits sound, which is supplied through a sound conduit pipe to a horn and propagated out of the horn through a mouth of the horn. The sound...
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6658127 |
Speaker system having an amplifying horn
Disclosed is a speaker system that can be advantageously used in a television set. The speaker system has a support member which is provided with a partition wall and mounted on both sides of the...
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6650760 |
Loudspeaker
An upper base/low mid loudspeaker comprises a conical driver and a channel defined by a housing and a central member. The central member has a portion extending into the cone to form a first...
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6628796 |
Axially propagating mid and high frequency loudspeaker systems
A loudspeaker system of improved clarity, coherence and uniformity of energy distribution containing mid frequency sound chambers with an annular input and approximately rectangular output for use...
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6621909 |
Horn loudspeaker and loudspeaker systems
A horn loudspeaker comprises: a horn ( 22 ) having a throat ( 26 ) and a mouth ( 30 ); a primary electro-acoustic driver ( 24 ) mounted at or adjacent the throat of the horn and directed generally...
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6597794 |
Portable electronic device having an external speaker chamber
A portable electronic device, such as a portable notebook computer, that includes a case made up of a top portion and a bottom portion with a base surface. The case contains a speaker having a...
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6574344 |
Directional horn speaker system
A directional speaker system includes an enclosure having an inner surface, an outer surface, an open end, and a closed end, a speaker driver directed toward the open end and mounted near the...
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6519348 |
Speaker apparatus and television set
A first feature of the present invention is that the opening of a sound output port 3 b is smaller in area than the opening of a sound input port 3 a in a horn 3 . A second feature is that the...
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6516076 |
Modular horn loudspeaker
A modular horn loudspeaker principally intended for use on emergency vehicles consists of three coaxially aligned cup-shaped parts, a sound chamber, a cover fitted to the sound chamber and a...
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6502662 |
Speaker having a hemispherical vibrator
A speaker includes a disk-shaped base. A substantially hemispherical surface vibrator is fitted into a substantially circular groove provided in the base and bonded therein. Terminals are attached...
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6466680 |
High-frequency loudspeaker module for cinema screen
A high-frequency cinema loudspeaker module for deployment behind a perforated cinema screen is configured with a waveguide to compensate for the beam-spreading effects of the perforated screen at...
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6411718 |
Sound reproduction employing unity summation aperture loudspeakers
The present invention relates to systems and methods for sound reproduction employing a unity summation aperture loudspeaker horn taking advantage of the frequency response of horn flare...
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6394223 |
Loudspeaker with differential energy distribution in vertical and horizontal planes
A loudspeaker horn, loudspeaker and a loudspeaker system wherein at least one loudspeaker includes a horn composed of a waveguide, a plurality of throats acoustically coupled to a single waveguide...
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6389144 |
Sound field equalizing apparatus for speaker system
A sound field equalizing apparatus for a speaker system which is capable of widening a region in which it is possible to effectively hear a sound field. The apparatus includes a sound field...
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6356642 |
Multi-speaker system
A multi-speaker apparatus generates and transmits sound waves in all directions toward and away from a surface upon which the apparatus is installed or mounted. The multi-speaker apparatus includes...
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6343134 |
Loudspeaker and horn with an additional transducer
A loudspeaker includes a compresion chamber, a first electroacoustic transducer and a horn. The first electroacoustic transducer is disposed inside the compression chamber. The horn is mechanically...
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6320970 |
High frequency compression drivers
The compression driver includes an annular diaphragm with a voice coil which is disposed in a magnetic gap of a magnet assembly which supplies a magnetic field to the voice coil. The annular...
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6205228 |
Horn loaded pleated ribbon high frequency acoustic transducer with substantially uniform coupling
An electro-dynamic acoustic transducer has a pleated diaphragm in which an accordion-like alternating movement of the adjacent pleats is perpendicular to the radiation (acoustic) axis of the...
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6144309 |
Alarm device with multiple indicators and flameproof housing
An alarm device 10 incorporates a sounder 11 and a strobe 12. The sounder and the strobe are controlled by a circuit board 17 that is located within a single flameproof housing 13. A pressure unit...
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