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4434507 |
Free standing transmitting microphone
A free standing transmitting microphone comprising a hollow holder for enclosing a transmitter and a microphone on a base. A cover of conductive material above the holder functions as an antenna...
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4385211 |
Reflex horn speaker with a waterproofing device
A reflex horn speaker with a waterproofing device for use on a ship or the like is disclosed. The reflex horn speaker comprising a sound generator, an inner cylindrical horn, a conical reflector...
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4365113 |
Speaker unit for automotive vehicles
A speaker unit for an automotive vehicle including a woofer speaker flush mounted with the rear parcel shelf of the vehicle with a tweeter or medium- and high-range speaker unit mounted to the rear...
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4358835 |
Method and device for matching the reflector of an acoustic echo ranging system
The reflector of an acoustic echo ranging system is matched so as to make up for the influence of the temperature at the bottom of the reflector, on the measurement of the back-reflected signal....
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4357490 |
High fidelity loudspeaker system for aurally simulating wide frequency range point source of sound
The loudspeaker system utilizes an ellipsoidal reflector of substantially the same diameter as the low frequency (LF) driver, positioned on-axis of the LF driver, as a reflective dispersing means...
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4348750 |
Energy control device
First and second reflectors, having a parabolic concave reflective surface and a conical reflecting surface, respectively, are vertically spaced on co-linear axis. An energy source, such as a...
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4322578 |
Method and devices for the omnidirectional radiation of sound waves
The present invention pertains to a method and apparatus for achieving a uniform omnidirectional radiation of sound waves, particularly at high frequencies, and for increasing selectivity and...
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4314098 |
Reversible electroacoustic transducer device having a constant directivity characteristic over a wide frequency band
A device capable of operating over a wide frequency band with a constant angular width of the radiation lobe of elastic waves. It comprises in combination at least one omnidirectional reversible...
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4264790 |
Directional microphone
A directional microphone of the interference type comprising a single elongated tube having one or more longitudinal slots or side apertures therein, at least one electroacoustic transducer...
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4227050 |
Virtual sound source system
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...
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4224469 |
Stereo speaker system
An acoustic speaker system suitable for use with a home stereo system has a bass speaker, a super-tweeter speaker, a tweeter speaker and a midrange speaker. The speakers are disposed in a generally...
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4190739 |
High-fidelity stereo sound system
Sound reproduction systems using sound reflectors and the reflectors for the same are disclosed. Passive reflectors for redirecting sound from speakers spaced therefrom are described in several...
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4149034 |
Resolution enhanced sound detecting apparatus
Apparatus for enhancing the resolution of a sound detector of the type which includes an acoustic mirror for focusing sound from an object onto a microphone to enable the determination of the...
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4122302 |
Two way dynamic and electrostatic speaker enclosure with side vent for greater high frequency dispersion
An electroacoustic transducer, especially an electrostatic speaker embodying a conductive perforated backing plate, a dielectric membrane carrying a conductive coating, and an intervening spacing...
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4119799 |
Critical alignment loudspeaker system
A loudspeaker cabinet system wherein at least two low frequency drivers of equal effective diameters are critically spaced a vertical distance which equals the effective piston diameter of one...
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4063387 |
Hanging planter pot speaker enclosure
A hanging planter pot speaker enclosure for stereo or monaural music systems comprising a hollow ceramic housing enclosed on all sides and having openings at the top and bottom. A planter pot is...
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4051919 |
High fidelity speaker enclosure
A high fidelity speaker array comprises a full range speaker board, a pair of tweeter boards disposed at an angle of from 120° to 165° with respect to said full range speaker board, and a pair of...
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4037052 |
Sound pickup assembly
A sound pickup assembly comprising a parabolic reflector in the focal point of which is mounted a pickup and wherein the reverse side of the parabolic reflector is formed as a binaural sound pickup...
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4001893 |
Portable tape-recorder
A sound-reflector, for instance a tilted plate, is set over a microphone on the top face of a chest-pocket size small tape-recorder, so that voice of a person who is talking to the person who...
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3944757 |
High-fidelity moving-coil loudspeaker
In a moving-coil type loudspeaker, a tubular member of a length longer than the wave-length of any one of the frequencies in a desired frequency range and having a constant cross-sectional area...
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3931867 |
Wide range speaker system
In the speaker system disclosed herein, the magnet supporting basket of a downwardly-facing, acoustic-suspension woofer supports a bell-shaped diffuser which circumferentially disperses midrange...
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3912866 |
Folded bass horn speaker
The specification discloses a folded bass horn speaker having a rectangular speaker cabinet with a rear wall and a front speaker opening. A housing having the exterior shape of a pyramid is mounted...
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3895188 |
Sound collecting device
A sound accumulation device in which a microphone is mounted at the focus of parabola for movement along the longitudinal axis to receive audio information reflected from the sidewalls of the...
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3881056 |
Parabolic sound reflecting microphone holder
A parabolic sound reflecting microphone holder is disclosed made of a transparent plastics material about 18 inches in diameter and from 0.080 to 0.125 inches thick having good acoustic properties...
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3862366 |
SOUND RADIATION SYSTEM
A sound radiator comprising at least four high frequency loudspeakers with their axes intersecting in zigzag relationship, and a single low frequency loudspeaker whose center is at a distance not...
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3632902 |
SOUND REFLECTOR-MODIFIER FOR HEARING AID MICROPHONES
A sound reflector-modifier particularly useful to the hard of hearing for improving the quality and clarity of sounds received and reproduced by hearing aids and comprising in combination a sound...
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3536862 |
MICROPHONE HAVING A VARIABLE UNIDIRECTIONAL CHARACTERISTIC
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3454729 |
OUTDOOR PAGING LOUDSPEAKER
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3449519 |
SPEAKER SYSTEM FOR SOUND-WAVE AMPLIFICATION
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3443660 |
MID-RANGE SPEAKER AND ENCLOSURE COMBINATION
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3400217 |
Method of and means for loudspeaker sound wave distribution
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3305043 |
Acoustic communication device and toy
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3275758 |
Sound reproducing apparatus
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3247330 |
Hearing aid structure
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3076061 |
Hearing aid
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2957054 |
Transducer
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