Matches 101 - 150 out of 155 < 1 2 3 4 >
Match Document Document Title
5715318 Audio signal processing  
An audio signal processing system in which a visual display (15) is arranged to provide a visual representation (16) of a sound generating device (111) a notional listening position and a space in...
5701347 Audio system for a personal computer  
An audio system for multimedia computer systems and method for use are provided including an audio module having speakers, a microphone and associated circuitry. The audio module is adapted to be...
5689574 Integral sound module for a modular monitor  
An integral sound module provides a novel isolation system between the display unit and the audio unit. The display unit preferably includes a cathoderay tube (CRT) and associated electronics...
5684879 Combination head mounted speaker assembly and multi-channel audio processing system  
A combination head mounted speaker assembly and multi-channel audio processing system includes a pair of speaker assemblies mounted at the ends of a pair of extension arms. The arms are mounted on...
5668882 Notebook computer speakers  
A loudspeaker configuration for a notebook computer includes one or more high frequency "upper" speakers and a low frequency "lower" speaker. The upper speakers are mounted within a display housing...
5666425 Plural-channel sound processing  
An artificial head (2) and a plurality of discrete monophonic microphones (8, 10, 12) are used to record one or more sound sources. The signals (14, 16, 18) from each of the microphones (8, 10, 12)...
5666422 Remote speaker for surround-sound applications  
A surround-sound system for use with conventional TV sets, using a wireless remote bipolar rear speaker (or two conventional speakers fed out of phase) for the surround (difference) channels. The...
5642429 Sound reproduction system having enhanced low frequency directional control characteristics  
A sound reproduction system includes a plurality of loudspeakers arranged in a spaced array which extends onto opposite sides of a center point. The spaced array includes a first pair of...
5638343 Method and apparatus for re-recording multi-track sound recordings for dual-channel playbacK  
A method and system are provided for re-recording multi-track sound tracks onto two-channel sound recordings. A playback mechanism that has multiple speakers is provided for reproducing the sound...
5631964 Audio apparatus  
Audio apparatus capable of playing music programs with desired surrounding sounds. Two sources drive two speakers having different directivities at the same time or independently. A sound field...
5610992 Portable electronic device having a ported speaker enclosure  
A portable electronic device, such as a portable personal computer, has a ported speaker enclosure. The ported speaker enclosure has a speaker having a front portion and a back portion, where the...
5608806 Audio speaker mounts for off-road vehicles  
Audio speaker assembly mounts for a vehicle, and particularly an open vehicle, such as an off-road vehicle, to provide improved audio sound to the passengers of the vehicle and to prevent theft of...
5600730 Swimming training device  
A swimming training device may be part of an overall training system. The device is deployable releasably in a swimming cap and can receive electromagnetic wave signals. The device can then convert...
5594801 Ambient expansion loudspeaker system  
A sound reproduction system has audio drivers for producing audio outputs in response to a left channel signal and a right channel signal and for producing an expanded acoustic image. The sound...
5590771 Consolidated music instrument case with amplifier and speakers  
A musical instrument case containing one or more amplifiers and a plurality of speakers is described. The consolidated case comprises a substantially rectangular base portion having a recess...
5590204 Device for reproducing 2-channel sound field and method therefor  
A method of reproducing a sound field using digital signal processors in which 2-channel stereo signals are received and converted into 4-channel sound field signals through a first DSP and the...
5557680 Loudspeaker system for producing multiple sound images within a listening area from dual source locations  
A loudspeaker system comprises two spaced-apart sound cabinets with the first cabinet housing a speaker driver directed toward a listener and couplable to a left channel signal to create a left...
5553148 Apparatus and method for producing vibratory sensations to accompany audible sounds in a properly phased relationship  
An improved system and related method are disclosed for producing vibratory sensations on a listener's body which are similar to those experienced during a live performance, both in their vibratory...
5553147 Stereophonic reproduction method and apparatus  
A method and apparatus for stereophonic reproduction uses conventional left and right stereophonic signals to energize a point source transducer in a complementary manner. The resultant...
5550921 Stereo sound source for portable computer  
A dual-speaker unit providing improved stereo base response and directionality for portable computer applications is disclosed. The small speakers direct low end frequencies into a mixing chamber...
5546468 Portable speaker and amplifier unit  
A combination speaker and amplifier unit has speaker located on the front of a cabinet and speaker wire receptacles located in the back of the cabinet for providing speaker wire connections to a...
5497425 Multi channel surround sound simulation device  
A passive multi channel surround sound simulation device has a pair of input jacks for receiving a two channel stereophonic signal having a speaker level. An electronic circuit produces from the...
5414774 Circuit and method for controlling an audio system  
A circuit for directly differentiating stereo and mono signals regardless of whether a pilot carrier signal is present. The circuit generally includes a detection circuit coupled to a control...
5386474 Amplifier-speaker interface correction circuit  
A pair of amplifiers are coupled to respective loudspeakers. The output terminals of the amplifiers are coupled to each other through a filter network for reducing the effects of time delayed...
4940108 Open line source speaker system  
An open line source speaker system includes a first columnar cabinet enclosing a plurality of midrange or woofer speakers arranged in the cabinet in a vertical line and a second columnar cabinet...
4939781 Device for eliminating absolute polarity inversion in a high-fidelity sound reproduction system  
A device for eliminating Absolute Polarity inversion in a high-fidelity sound reproduction system, wherein the sound reproduction system includes a component for extracting, from a storage medium,...
4932060 Stereo electroacoustical transducing  
A woofer enclosure includes left and right input terminal pairs and left and right output terminal pairs. A protection circuit, woofer, satellite protection capacitor, satellite passive equalizer...
4888809 Method of and arrangement for adjusting the transfer characteristic to two listening position in a space  
In the method of adjusting the transmission of an electric signal, applied to an input terminal (1, 1'), via two transducer devices (8, 9), to an acoustic signal at two positions (P 1 , P 2 ) in a...
4885782 Single and double symmetric loudspeaker driver configurations  
New loudspeaker driver configurations comprise positioning the high frequency driver between symmetrically located lower frequency drivers and providing in combination electrical or acoustical...
4696037 Loudspeaker arrangement comprising one or more flat diaphragms  
A modular loudspeaker comprises a first module including a first loudspeaker unit (1) for reproducing a low-frequency audio signal and provided with at least two flat diaphragms (4, 5) and a second...
4691362 Dihedral loudspeakers with variable dispersion circuits  
A dihedral loudspeaker for use in mirror image stereophonic loudspeaker systems combines a pair of coaxial drivers with variable dispersion circuits and a high frequency delay network. The variable...
4638505 Optimized low frequency response of loudspeaker systems having main and sub-speakers  
A loudspeaker system for use with a stereo system having right R and left L signal outputs, has a right main speaker and right sub-speaker, and a left main speaker and left sub-speaker....
4630298 Method and apparatus for reproducing sound having a realistic ambient field and acoustic image  
Apparatus for reproducing sound having a realistic ambient field and acoustic image is used in a stereophonic sound reproduction system having a left channel output and a right channel output. A...
4596034 Sound reproduction system and method  
A sound reproduction system wherein two full range driver sets are employed to produce out-of-phase sound pressure lobes directed to either side of a listening area whereby the listening area is...
4584536 Balance control circuit  
A balance control circuit for controlling the difference in volume between right and left audio stereo signals. DC output voltages of an amplifier provided in a preceding stage to the balance...
4574391 Stereophonic sound producing apparatus for a game machine  
A stereophonic sound producing apparatus employs four speakers, a background-sound input signal and input-sound signals, to provide an on-the-spot "live action" feeling. The sounds are combined and...
4495638 Audio-band electro-mechanical vibration converter  
A device for giving an audio signal to a coil associated with an audio-band electromechanical converter uses a mixer, a first-stage low-pass filter, a limited and a second-stage low pass filter to...
4475226 Stereo sound and light track system  
A stereo sound and light track system includes one or more sound fixtures and one or more light fixtures, each fixture being independently mounted for movement on a track to any mounted position...
4462112 Speaker system  
A speaker system which comprises two speakers and a switch for selectively connecting one of the speakers to an input through a volume controller. The other of the speakers is always connected to...
4230905 Stereophonic system with discrete bass channels  
The stereophonic system includes a pair of right and left channel sub-bass converters in addition to the usual right and left channel main speakers. The main speakers are spaced apart from each...
4227047 Dome structure  
A dome structure which is adapted, in a preferred embodiment, to serve as a listening booth for auditioning stereo components. The structure includes at least one curved dome section having side...
4199657 Planar sound reproducing speaker system  
A speaker system, comprising for each of its channels, a stand supporting a midrange unit, from the housing of which a plurality of tubular supports emanates radially and equidistantly, a tweeter...
4196314 Sound distributing system improvements  
Apparatus is disclosed for cyclically communicating an audio electrical signal to a plurality of sound-reproducing elements in sequential, serial fashion. One embodiment includes a number of...
4187395 Stereo sound recording and reproduction apparatus  
An integrated, self-contained stereophonic sound recording and reproduction system housed within a console having a front desk-like component and a rear storage component. The desk-like component...
4181819 Unitary panel multiple frequency range speaker system  
A speaker enclosure is provided with an elongated vertically oriented flat panel having a plurality of vertically spaced speaker openings and a sound port positioned near the upper end of the...
4107461 Environment for demonstrating a stereo loudspeaker system  
A generally semicircular enclosure about 3 feet in radius and 7.5 feet high carries a pair of horizontally mounted loudspeakers centered about 5.5 feet from the bottom facing the center of the...
4070546 Portable stereo audio apparatus  
A portable stereo audio apparatus consists of a pair of speaker cabinets each containing a loudspeaker and a main cabinet containing electric devices such as amplifiers and a radio receiver. The...
4006311 Stereophonic sound reproducing apparatus  
A loudspeaker combination comprises a rectangular casing having mounted on its top wall a midfrequency speaker and two or more high frequency speaker devices. The midfrequency speaker is oriented...
3919499 Planar speaker  
A sound generating transducer or speaker including a vibratable diaphragm on a frame and in spaced and confronting relation with a polarity defining backing, preferably magnetic in nature,...
3909531 Acoustic transducer system  
Equal-sized speaker cones are housed in equal-sized closed compartments in a system of loudspeakers, a housing therefor and electrical crossover circuits which system results in substantially equal...
Matches 101 - 150 out of 155 < 1 2 3 4 >