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6498856 Vehicle-carried sound reproduction apparatus  
A vehicle-carried sound reproduction system which reproduces a sound image forwardly of a passenger of a vehicle in which it is incorporated. The vehicle-carried sound reproduction apparatus...
6473497 Digital telephone set  
An aural information is expanded correspondingly to a compression system and a compression rate when a receiving signal from a digital telephone circuit is the aural information and a control...
6470087 Device for reproducing multi-channel audio by using two speakers and method therefor  
A device and a method for reproducing a multi-channel audio signal with only two speakers preserving the sound field of multi-channel audio reproduction, thereby providing vivid realism to a user...
6449368 Multidirectional audio decoding  
An audio crosstalk-cancelling network that may be implemented in software, such that when run in real time on a personal computer, the canceller has very low mips requirements and uses a small...
6442277 Method and apparatus for loudspeaker presentation for positional 3D sound  
A method and device for placement of sound sources in three-dimensional space via two loudspeakers. This technique uses an efficient implementation which consists of binaural signal processing and...
6424719 Acoustic crosstalk cancellation system  
A system for acoustic crosstalk cancellation which uses a loudspeaker arrangement including three loudspeakers, with the center loudspeaker set forward of the two outside loudspeakers. This...
6385320 Surround signal processing apparatus and method  
A surround signal processing apparatus and method can realize sound image localization and have reverberation effects. In the apparatus, left and right impulse measuring sections measure left and...
6360200 Process for reducing redundancy during the coding of multichannel signals and device for decoding redundancy-reduced multichannel signals  
A redundance reduction method used in coding multichannel signals is proposed, where signals available in digitized form are predicted. A prediction error is computed, which is subsequently...
6356639 AUDIO DECODING APPARATUS, SIGNAL PROCESSING DEVICE, SOUND IMAGE LOCALIZATION DEVICE, SOUND IMAGE CONTROL METHOD, AUDIO SIGNAL PROCESSING DEVICE, AND AUDIO SIGNAL HIGH-RATE REPRODUCTION METHOD USED FOR AUDIO VISUAL EQUIPMENT  
A sound image localization device which includes a signal source for outputting an audio signal, a signal divider for dividing the audio signal output from the signal source into two digital audio...
6307941 System and method for localization of virtual sound  
A system and method for providing improved virtual sound images. One or more spatial cues of an audio signal may be modulated within a described range to increase the clarity and perceived...
6292570 Surround sound  
To improve listener perceived characteristics multi-channel sound reproduction systems are known which include a surround sound channel. It is preferred to reproduce the surround sound signal...
6285767 Low-frequency audio enhancement system  
The present invention provides an audio enhancement apparatus and method which spectrally shapes harmonics of the low-frequency information in a pair of audio signals so that when reproduced by a...
6282247 Method and apparatus for digital compensation of radio distortion over a wide range of temperatures  
Radio distortion in a radio signal is compensated for in a digital modem in a wireless communication system over a wide range of temperatures. Actual frequency responses of components in the...
6281749 Sound enhancement system  
The present invention provides an audio enhancement apparatus and method which spectrally shapes the differential information in a pair of audio signals so as to create an immersive,...
6246772 Wireless headphone/speakers sound field control circuit  
A wireless headphone/speakers sound field control system, which includes a wireless signal receiver, a left speaker connected to the wireless signal receiver through a left differential amplifier...
6243476 Method and apparatus for producing binaural audio for a moving listener  
A system for generating loudspeaker-ready binaural signals comprises a tracking system for detecting the position and, preferably, the angle of rotation of a listener's head; and means, responsive...
6192086 Digital sub-systems and building blocks for a mostly digital low-cost BTSC compatible encoder  
A BTSC-compatible encoder that is integrated onto an application specific integrated circuit includes a low pass filter that is responsive to a digital representation of an audio signal that has a...
6178245 Audio signal generator to emulate three-dimensional audio signals  
A system produces, based on samples of a single-channel input audio signal and an indication of a particular orientation of the listener relative to a source of the audio signal, a multi-channel...
6173061 Steering of monaural sources of sound using head related transfer functions  
A system is disclosed for steering a monaural audio signal representing a source of sound into left and right audio signals for presentation to the corresponding ears of a listener so that the...
6169812 Point source speaker system  
The system of the present invention includes, briefly, a point source speaker system, comprising a processor which produces a left minus right (L-R) audio signal, a right plus left (R+L) and a...
6122381 Stereophonic sound system  
A stereophonic sound system is disclosed, having a source of stereophonic signals which contain a right signal and a left signal as well as further signals which supplement the right and left...
6118875 Binaural synthesis, head-related transfer functions, and uses thereof  
A method and apparatus for simulating the transmission of sound from sound sources to the ear canals of a listener encompasses novel head-related transfer functions (HTFs), novel methods of...
6111958 Audio spatial enhancement apparatus and methods  
A spatial enhancement system broadens the sound image of a stereo signal. The system emphasizes dissimilarity between the left and right channels by (i) boosting the level of the dissimilar...
6097558 Digital audio signal transmission apparatus with data blocks of varying sizes  
Digital audio signal transmission is provided for digitally processing, for transmission in a digital VCR format, audio signals from a plurality of channels into a digitized audio data segmented...
6067360 Apparatus for localizing a sound image and a method for localizing the same  
It is an object of the present invention to provide an apparatus for localizing a sound image capable of achieving so called "surround-effect" sufficiently with a simple structure while maintaining...
6067072 Audio equipment and method of displaying operating thereof  
The present invention is concerned with an audio equipment capable of processing video signals and a method of displaying operation of the acoustic equipment. An input selector switch 1 is supplied...
6052470 System for processing audio surround signal  
A surround signal processing system receives a surround signal and also a program of processing the surround signal. The received surround signal is decoded into multiple-channel signals according...
6044307 Method of entering audio signal, method of transmitting audio signal, audio signal transmitting apparatus, and audio signal receiving and reproducing apparatus  
A method of entering an audio signal into a data processing apparatus, in which analog audio signals of at least two channels as the audio signal are digitized by and transmitted from an audio...
6038323 Stereophonic image enhancement system for use in automobiles  
A stereophonic image enhancement signal processing system for vehicular sound systems provides a symmetrical improvement in imaging for listeners located at the left and right regions of a vehicle...
6035045 Sound image localization method and apparatus, delay amount control apparatus, and sound image control apparatus with using delay amount control apparatus  
A sound image control apparatus is arranged by a time difference signal producing unit, and a function processing unit. The time difference producing unit sequentially outputs externally supplied...
6026168 Methods and apparatus for automatically synchronizing and regulating volume in audio component systems  
A signal regulator regulates an auxiliary signal based upon a primary signal scaled by an external amplifier. The signal regulator receives the primary signal with an unscaled level. Processing...
6009178 Method and apparatus for crosstalk cancellation  
A system and method are disclosed for providing a two channel signal to the ears of a listener through an audio system. The audio system includes a plurality of audio signals which are played...
6005947 Technique for enhancing stereo sound  
An acoustic signal processing subsystem for an electronic stereophonic audio system is disclosed. The acoustic signal processing subsystem will modify electronic audio signals such that sound...
6002775 Method and apparatus for electronically embedding directional cues in two channels of sound  
The system and method of the present invention provides surround sound effects through a two channel system. In one embodiment, the first channel is connected to one speaker (e.g., the right...
6002774 Arrangement, a system, a circuit and a method for enhancing a stereo image  
A stereophonic audio signal processing arrangement for variably enhancing a stereo image, wherein the stereo image enhancement is reduced at high signal levels so as to reduce distortion. The...
5995631 Sound image localization apparatus, stereophonic sound image enhancement apparatus, and sound image control system  
A stereophonic sound image enhancement apparatus subtracts a right input signal from a left input signal and amplifies the subtracted signal to produce a difference signal, and also subtracts a...
5991385 Enhanced audio teleconferencing with sound field effect  
An audio teleconferencing apparatus and method provide an audio sound field among a plurality of teleconferencees creating a sense of a virtual conference table having a spatial location for each...
5987141 Stereo expander  
A stereophonic audio processing system having left and right stereophonic sound channels with respective loudspeakers therefor is presented. The system is provided with spatial expansion of the...
5983087 Distributed digital signal processing for vehicle audio systems  
A radio with a tuner and other program sources uses a digital signal processor (DSP) to enhance the audio signal and to generate a stream of digital data including audio data and control data...
5974153 Method and system for sound expansion  
Monaural inputs are accepted for presentation to a pair of speakers. The output sound image from that pair of speakers is such that a listener will perceive that the sound is stereo and that...
5974152 Sound image localization control device  
A sound image localization control device reproduces an acoustic signal on the basis of a plurality of simulated delay times and a plurality of simulated filtering characteristics as if a sound...
5970152 Audio enhancement system for use in a surround sound environment  
An audio enhancement system and method for use in a surround sound environment creates a more diffuse and continuous sound field from a multi-channel, multi-speaker reproduction environment....
5946400 Three-dimensional sound processing system  
A three-dimensional sound processing system which provides a listener with three-dimensional sound effects by reproducing a sound image properly positioned in a reproduced sound field. A filter...
5943427 Method and apparatus for three dimensional audio spatialization  
A digital audio spatialization system that incorporates accurate synthesis of three-dimensional audio spatialization cues responsive to a desired simulated location and/or velocity of one or more...
5937071 Sound field expanding apparatus with improved tone control system  
A sound field processor having amplitude/phase conversion circuits for left and right channels of a stereophonic signal. The amplitude/phase conversion circuits for left and right channels have...
5930733 Stereophonic image enhancement devices and methods using lookup tables  
A stereophonic image may be enhanced by splitting the left and right input audio signals into a plurality of left and right output signals in a plurality of audio frequency bands and then...
5917916 Audio reproduction systems  
Stereophonic sound reproduction apparatus comprising an input means (2) for producing binaural signals, cross-talk cancellation means, (10) loudspeaker means, (20, 22) headphone means, (26) and a...
5912976 Multi-channel audio enhancement system for use in recording and playback and methods for providing same  
An audio enhancement system and method for use receives a group of multi-channel audio signals and provides a simulated surround sound environment through playback of only two output signals. The...
5912975 Method and circuit for creating phantom sources using phase shifting circuitry  
In portable stereo radio receivers and television receivers, the loudspeakers therein may be separated only by a limited amount. This severely restricts the stereo image created by the...
5910990 Apparatus and method for automatic equalization of personal multi-channel audio system  
An apparatus for automatically equalizing a personal multi-channel audio system, and a method therefor, are disclosed. White noises which are generated by a transfer characteristic measuring...
Matches 101 - 150 out of 411 < 1 2 3 4 5 6 7 8 9 >