Matches 251 - 300 out of 400 < 1 2 3 4 5 6 7 8 >
Match Document Document Title
5812674 Method to simulate the acoustical quality of a room and associated audio-digital processor  
A method for the simulation of the acoustical quality produced by a virtual sound source and for the localizing of this source with respect to one or more listeners, and one or more original sound...
5802180 Method and apparatus for efficient presentation of high-quality three-dimensional audio including ambient effects  
Spatialization of soundfields is accomplished by filtering audio signals using filters having unvarying frequency response characteristics and amplifying signals using amplifier gains adapted in...
5799094 Surround signal processing apparatus and video and audio signal reproducing apparatus  
A surround signal processor reproduces multi-channel audio signals with a pair of left and right rear surround signals via a pair of speakers arranged at front left and right positions roughly...
5796843 Video signal and audio signal reproducing apparatus  
An object of the present invention is to provide a video signal and audio signal reproducing apparatus in which a sound image reproduced from an audio signal is localized so as to correspond to a...
5784467 Method and apparatus for reproducing three-dimensional virtual space sound  
In the method and apparatus for obtaining acoustic characteristics of sound of a broad frequency range of from, for example, 0 to 20 KHz in a relatively short time with high accuracy even though an...
5774556 Stereo enhancement system including sound localization filters  
The sound field in a stereo reproduction system is enhanced by a preprocessor that removes a portion of the audio information that is common or substantially common to both the left and right...
5771294 Acoustic image localization apparatus for distributing tone color groups throughout sound field  
An acoustic image localization apparatus localizes an acoustic image of a plurality of tone color species having various timbres to a source point with respect to a listening point within a sound...
5768394 Surround audio signal reproducing apparatus having a sub-woofer signal mixing function  
A surround audio signal reproducing apparatus for reproducing a multi-channel audio signal to generate a surround sound effect is provided. The apparatus contains a surround decoder, a sub-woofer...
5768393 Three-dimensional sound system  
An object incorporated in image data is formed with a plurality of polygons. An object table defines each polygon by means of coordinates at an apex in a view coordinate system and the sound...
5761313 Circuit for improving the stereo image separation of a stereo signal  
By using special frequency response manipulation in the difference channel of a stereo signal, the stereo image will appear to extend beyond the actual placement of the loudspeakers. This is...
5761314 Audio reproducing apparatus and headphone  
An object of the present invention is to provide an audio reproducing apparatus which makes a radiation impedance from an inlet of an external auditory canal of a listener to an outside approximate...
5757931 Signal processing apparatus and acoustic reproducing apparatus  
A signal input at an input terminal (1) is divided into signals of two systems, and the signal of one system is supplied to a low-pass filter (2) and then fed to a downsampling processor (3). The...
5751815 Apparatus for audio signal stereophonic adjustment  
An audio signal balance control arranged is described in which, by utilizing binaural head related transfer functions, balance control beyond a first plane (22) in which two loudspeakers lie may be...
5748745 Analog vector processor and method for producing a binaural signal  
An analog vector processor and method for converting right and left mono and stereo audio input signals through a series of six amplifier blocks and two control blocks using a series of unique...
5742687 Signal processing circuit including a signal combining circuit stereophonic audio reproduction system including the signal processing circuit and an audio-visual reproduction system including the stereophonic audio reproduction system  
A signal combining circuit has a first input and a second input for receiving signals which have frequencies in the audio frequency spectrum, and an output. A first signal path between the first...
5742688 Sound field controller and control method  
A sound field controller of the invention reproduces a sound field which provides a distance perspective depending on a position of a sound image for a listener. The sound field controller...
5742689 Method and device for processing a multichannel signal for use with a headphone  
A method and device processes multi-channel audio signals, each channel corresponding to a loudspeaker placed in a particular location in a room, in such a way as to create, over headphones, the...
5734724 Audio communication control unit  
In an audio communication control unit, audio signals from at least three terminals connected to a switching part are branched to left- and right-channels audio signals, then the left- and...
5729612 Method and apparatus for measuring head-related transfer functions  
A method and apparatus is capable of accurately deriving acoustic transfer functions such as head-related transfer functions (HRTF) at low cost. Various aspects of the invention include...
5715317 Apparatus for controlling localization of a sound image  
The present invention discloses a sound image localization apparatus for localizing a sound image at an arbitrary location in three-dimensional space by adding an attenuation in distance to a...
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...
5696834 Stereo system and stereo method for electronic acoustical system  
According to the invention, sound data is distributed as a plurality of sound data, and the distributed sound data are combined to obtain a plurality of synthesized sound data. The synthesized...
5682433 Audio signal processor for simulating the notional sound source  
An Audio Signal Processing system in which gain values are calculated for a plurality of output channels so that, from a notional listening position, a notional sound source may be perceived as...
5677957 Audio circuit producing enhanced ambience  
A circuit for use in connection with a stereo audio system to increase the ambience includes a differencing circuit for receiving a left stereo input and a right stereo input. The differencing...
5671287 Stereophonic signal processor  
A frequency-dependent linear audio signal processor takes source signals S in input signals and provide directionally spread directionally encoded output signals. The processor directionally...
5652798 Reverberant characteristic signal generation apparatus  
This reverberant characteristic signal generation apparatus comprises a measuring room where a speaker and one channel of microphone is provided to supply one channel of a pulse train indicative of...
5642427 Integrated circuit for audio enhancement system  
An integrated circuit for use as a building block in different embodiments of systems for enhancing audio performance by providing group delay to various frequency components of the signal. The...
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...
5636283 Processing audio signals  
A system for mixing five channel sound which surrounds an audio plane. The position of a sound source is displayed on a VDU (16) relative to the position of a notional listener (31). The sound...
5604809 Sound field control system  
First and second processing circuits are provided for carrying out a reverberation process of an input signal, and first and second filters are provided for applying amplitude characteristics to...
5598478 Sound image localization control apparatus  
A sound image localization control apparatus provided with a pair of convolvers for performing a convolution operation on signals sent from a common sound source, a storage unit for storing groups...
5596645 Sound image localization control device for controlling sound image localization of plural sounds independently of each other  
Processing systems corresponding to the right and left channels are provided for applying independent sound image localization control to each of plural input sound signals on the basis of at least...
5592558 Sound reproduction device  
The invention introduces an arrangement which maintains the usefulness of a fader control (11) connected for example to an audio signal source (10), and at the same time considerably reduces the...
5581618 Sound-image position control apparatus  
In order to obtain a sound-broadened image and a clear sound-image discrimination image when producing plural kinds of sounds, the electronic musical instrument and the like provides a sound-image...
5572591 Sound field controller  
According the present invention, a sound field controller for reproducing a sound field with presence comprising; input terminals for inputting an audio signal having a first and a second channel...
5555310 Stereo voice transmission apparatus, stereo signal coding/decoding apparatus, echo canceler, and voice input/output apparatus to which this echo canceler is applied  
According to this invention, a stereo voice transmission apparatus for coding and decoding voice signals input from a plurality of input units includes a discriminating means for discriminating a...
5550920 Voice canceler with simulated stereo output  
A vocal canceler receives left- and right-channel input signals, and combines their non-vocal components into a single monaural karaoke signal. It then shifts the monaural karaoke signal by one...
5546465 Audio playback apparatus and method  
An audio playback apparatus and method are disclosed which includes a Dolby pro-logic decoder for converting a digital audio signal into a left signal, a right signal, a center signal, and a...
5521981 Sound positioner  
This invention relates to the presentation of sound where it is desirable for the listener to perceive one or more sounds as coming from specified three-dimensional spatial locations. In...
5506907 Channel audio signal encoding method  
An encoding method and apparatus for audio signals for generating ten-channel audio signals from audio signals of a left channel, a left center channel, a center channel, a right center channel, a...
5500900 Methods and apparatus for producing directional sound  
Free-field-to-eardrum transfer functions (FETF's) are developed by comparing auditory data for points in three-dimensional space for a model ear and auditory data collected for the same listening...
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...
5487113 Method and apparatus for generating audiospatial effects  
A method and apparatus is disclosed for producing one or more audiospatial effects in an original audio signal. A spatially disorienting signal, typically a modified white noise pattern, is...
5467401 Sound environment simulator using a computer simulation and a method of analyzing a sound space  
The present invention discloses a sound environment simulator including a sound field analyzing unit, a sound field reproducing unit, and an output unit. The sound environment analyzing unit...
5440638 Stereo enhancement system  
The sound field in a stereo reproduction system is enhanced by a preprocessor that removes a portion of the audio information that is common or substantially common to both the left and right...
5440639 Sound localization control apparatus  
A sound localization control apparatus is used to localize the sounds, which can be produced from a synthesizer and the like, at a target sound-image location. The target sound-image location is...
5438623 Multi-channel spatialization system for audio signals  
Synthetic head related transfer functions (HRTFs) for imposing reprogrammable spatial cues to a plurality of audio input signals included, for example, in multiple narrow-band audio communications...
5436975 Apparatus for cross fading out of the head sound locations  
A system for use with headphones provides sound imaging positioning that can accurately locate the sound image at any one of a number of points surrounding the listener and can smoothly fade the...
5434924 Hearing aid employing adjustment of the intensity and the arrival time of sound by electronic or acoustic, passive devices to improve interaural perceptual balance and binaural processing  
A hearing aid for a person with asymmetric hearing perception (a weaker ear system and a better ear system) employs conventional frequency-selective amplification (26L) of sound coming to the...
5418856 Stereo signal generator  
A stereo signal generator for generating stereo signals of a plurality of channels from a single channel input sound signal, which comprises input means for inputting positional information of a...
Matches 251 - 300 out of 400 < 1 2 3 4 5 6 7 8 >