Electroacoustic device
FIG. 1 shows, in cross section, a telephone receiver comprising permanent magnet 1, pole piece 2, support 3, induction coil 4, ring armature 5 which is in an air gap in the magnetic circuit formed by... Read More
Inventors: Bordelon, Chester M.; Sherwood, Richard C.;, Assignee: Bell Telephone Laboratories, Incorporated (New York, NY); Bell Telephone Laboratories Incorporated (Murray Hill, NJ) |
Method of graphically displaying the results of repeated perimetric examination of visual fields
I claim: 1. A method of making records of the results of perimetric examinations of the visual field of a subject, comprising the steps of presenting to the subject during each of at least two separat... Read More
Inventors: Seckinger, Erich;, Assignee: Interzeag AG (Schlieren, CH) |
Quadriphonic sound pick-up and reproduction devices
What I claim is: 1. A sound pick-up device for multiphonic broadcasting and recording, comprising a first stereophonic pair of directional microphones disposed at a first given distance from a sonic s... Read More
Inventors: Condamines, Roland J.;, Assignee: Etablissement Public, Telediffusion de France (Paris, FR) |
Electronic telephone
To achieve the foregoing objects, and in accordance with the purposes of the invention as embodied and broadly described herein, a fully electronic telephone is provided for use in a telephone network... Read More
Inventors: Niertit, Frank; Conner, Alvin R.;, Assignee: Stromberg-Carlson Corporation (Tampa, FL) |
Dereverberation system
The principles of this invention may be employed by the use of a single processor or by the use of a plurality of processors. When a single processor is employed, the entire signal band of the microp... Read More
Inventors: Fitzwilliam, James William;, Assignee: Bell Telephone Laboratories, Incorporated (Murray Hill, NJ) |
Device for forming an image by means of ultrasound
What is claimed is: 1. In a device for forming an image of an object by use of ultrasound energy, of the type which comprises an array of electroacoustic transducers; a tapped delay line having a plur... Read More
Inventors: Loonen, Antonie R. M.;, Assignee: U.S. Philips Corporation (New York, NY) |
Composite speaker system having a directional adjustable transducer
The present invention is a novel and unique composite speaker system which relates to existing aftermarket replacement speakers. The composite speaker system has an adjustable tweeter mounted within a... Read More
Inventors: Fenton, Robert;, Assignee: |
Vehicle steering system
The invention relates to a vehicle steering system having a manual steering device, particularly a driver operated manual steering wheel, as well as a motor-driven actuating unit which is assigned to ... Read More
Inventors: Bohner, Hubert; Moser, Martin;, Assignee: DaimlerChrysler AG (Stuttgart, DE) |
Speaker mounting system
The present invention provides a simplified speaker mounting system, that is inexpensive to manufacture, light-in-weight, and easy to install. The present invention also provides a hermetically sealed... Read More
Inventors: Skrzycki, Gary E.;, Assignee: |
Stereo headphones with plug, receptacle and securing plates
We claim: 1. A headphone comprising: A. an ear cup having a plurality of acoustic transducers mounted therein; B. a cord for connecting said transducers to a source of stereophonic electrical signals;... Read More
Inventors: Andre, Eugene M.; Mlodzikowski, Allan G.; Banks, Seth R.;, Assignee: Koss Corporation (Milwaukee, WI) |
Speaker holder
The present invention has been accomplished to provide a speaker holder which eliminates the aforesaid problem. The present invention uses a ball to support the speaker above the spring for permitting... Read More
Inventors: Shen, Wem-Tung;, Assignee: A - Sonic Electrics Co. Ltd. (Taipei Hsin, TW) |
Variable tilt loud speaker enclosure
In the present invention, loud speaker means is supported in the usual location adjacent the front of the enclosure. The adjustable tilt means comprises a pair of tilt members which are stored entirel... Read More
Inventors: Brown, Sr., James W.; Everett, Samuel Steven;, Assignee: Peavey Electronics Corporation (Meridian, MS) |
High fidelity speaker system and assembly
The present invention provides a speaker system and assembly which incorporates a pair of co-axial and closely positioned speakers. The first speaker of the assembly is a larger structure and is desig... Read More
Inventors: Johnson, Charles A.;, Assignee: |
Overhead vehicular loud speaker cabinet
AND ADVANTAGES A loud speaker cabinet assembly is provided for attachment to a vehicular overhead structural roof member. The cabinet assembly comprises housing means disposed beneath the structural r... Read More
Inventors: Bahm, III, Jackson L.; Bartlett, Mark J.; Hinske, Daniel K.;, Assignee: Top Source Technologies (Palm Beach Gardens, FL) |
Multi-speaker system
To overcome the problems described above, the preferred embodiments of the present invention provide a multi-speaker apparatus which is adapted and constructed to be non-directional relative to a surf... Read More
Inventors: Nakamura, Takeshi; Heinouchi, Yoshiaki; Mori, Takao;, Assignee: Murata Manufacturing Co., Ltd () |
Autoconvergence of a cathode ray tube using a semiconductor detector
In accordance with preferred embodiments of the invention, a CRT calibration system is provided having a CRT with a display screen, an electron gun system, and a plurality of feedback elements. Each f... Read More
Inventors: Culter, Robert G.;, Assignee: Tektronix, Inc. (Beaverton, OR) |
Method and circuit for the digital deflection correction of TV picture tubes
The basic idea underlying the invention will now be explained with reference to the schematic block diagram of FIG. 1. Sawtooth signals produced by the horizontal or the vertical oscillator ho, vo an... Read More
Inventors: Schweer, Rainer;, Assignee: Deutsche ITT Industries GmbH (Freiburg, DE) |
Video detector employing PLL system
Therefore, an object of the present invention is to provide a PLL video detector in which a so-called buzz sound in a sound output caused by unnecessary components included in a phase control signal o... Read More
Inventors: Gakumura, Hiroki;, Assignee: Sanyo Electric Co., Ltd. (Osaka, JP) |
Unified tone generation in a polyphonic tone synthesizer
In a Polyphonic Tone Synthesizer of the type described in U.S. Pat. No. 4,085,644 a computation cycle and a data transfer cycle are repetitively and independently implemented to provide data which are... Read More
Inventors: Deutsch, Ralph;, Assignee: Kawai Musical Instruments Mfg. Co., Ltd. (Hamamatsu, JP) |
Musical instrument performance amplifier
As illustrated in the drawing, an electrical musical instrument such as an electric guitar 10 is to be played by a musician primarily for production or creation of music contemporaneously with the pl... Read More
Inventors: Jahns, Edward R.;, Assignee: CBS Inc. (New York, NY) |
Method of fault sensing for power amplifiers having coupled power stages with normally alternate current flow
Power amplifiers are generally made with their output stages directly coupled. Such stages produce alternating output currents. A critical factor in the efficient operation of such amplifiers is that ... Read More
Inventors: Stanley, Gerald R.;, Assignee: Crown International, Inc. (Elkhart, IN) |
Electronic audio signal processor
An object of the invention is to add controlled distortion to an audio signal to change the dynamics or sustain characteristics of an audio signal, and to alter the tonal quality of the audio signal. ... Read More
Inventors: Scholz, Donald T.;, Assignee: |
Amplifier having maximum summed power output from a plurality of devices having limited current sinking capability
OF THE PREFERRED EMBODIMENT Referring now to the FIGURE, a television signal is received at a broadcast receiving antenna 10 or from another suitable source such as a cable system, VCR, or the like, ... Read More
Inventors: Rumreich, Mark F.;, Assignee: Thomson Consumer Electronics, Inc. (Indianapolis, IN) |
Circuit for simulating vacuum tube compression in transistor amplifiers
OF THE PREFERRED EMBODIMENT Referring now to the drawing, a circuit in accordance with the invention is shown in FIG. 1, referenced generally by the numeral 10. The circuit includes input terminals, ... Read More
Inventors: Sondermeyer, Jack C.;, Assignee: Peavey Electronics Corp. (Meridian, MS) |
Direct box employing hybrid vacuum tube and solid state circuitry
I claim: 1. A circuit for coupling a high impedance audio source to a low impedance audio destination, comprising: at least one operational amplifier with first and second input ports of opposite pola... Read More
Inventors: Butler, Brent K.;, Assignee: |
Automatic tuning system for a narrow bandwidth communication
In accordance with the present invention, an adjustable tuning apparatus, controlled by three separate servo loops, which sense for signal variations at the output of the tuning apparatus is thereby m... Read More
Inventors: Dimon, Donald F.;, Assignee: |
Double-scanning non-interlace television receiver
Accordingly, it is an object of the present invention to provide an improved double-scanning non-interlace television receiver capable of obviating the above defects inherent in the conventional doubl... Read More
Inventors: Tanaka, Yutaka; Ikeda, Yasunari; Nakano, Hiroshi;, Assignee: Sony Corporation (Tokyo, JP) |
Headphone
Therefore, an object of the present invention is to provide a headphone whereby dynamic low frequency sounds exceeding the capacity of the electroacoustic transducing device can be easily experienced ... Read More
Inventors: Nagayoshi, Atsushi;, Assignee: Matsushita Electric Industrial Co., Ltd. (Kadoma, JP) |
Evoked potential processing system with spectral averaging, adaptive averaging, two dimensional filters, electrode configuration and method therefor
OF THE PREFERRED EMBODIMENTS The present invention relates to an evoked potential (EP) signal processing system using spectral enhancement averaging as one type of processing method, adaptive averagi... Read More
Inventors: Ozdamar, Ozcan; Delgado, Rafael E.;, Assignee: Intelligent Hearing Systems Corp. (Miami, FL) |
Volume controller using encoder
Therefore, an object of this invention is to provide an improved and effective volume controller using encoder to regulate the volume without using an expensive main controller and a quartz oscillator... Read More
Inventors: Kim, Kwang-Su;, Assignee: SamSung Electronics Co., Ltd. (Suwon, KR) |
Audio Signal Processing 
