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5386082 |
Method of detecting localization of acoustic image and acoustic image localizing system
A method of detecting localization of an acoustic image, in which an acoustic impulse is emitted from a sound source to a dummy of a human head, an acoustic sensor is provided to a portion of the...
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5384856 |
Acoustic system
In a digital channel divider of the present invention, a plurality of filters are connected in parallel, which can set a desired transmission frequency response optionally for a digital input...
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5384851 |
Method and apparatus for controlling sound localization
A sound localization control apparatus controls localization of sound which is perceived by listeners by carrying out a signal processing on left and right channels binaural audio signals supplied...
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5371799 |
Stereo headphone sound source localization system
A system for processing an audio signal for playback over headphones in which the apparent sound source is located outside of the head of the listener processes the input signal as if it were made...
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5369224 |
Electronic musical instrument producing pitch-dependent stereo sound
An electronic musical instrument is provided with an input implement for inputting performance information which designates a tone pitch of a musical sound to be produced during the course of...
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5355416 |
Psycho acoustic pseudo-stereo fold back system
This invention teaches a method of mixing sound so that a monophonic common ambience audio channel, derived either from a mix of an entire performance, or from a specially created audio mix, is...
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5339363 |
Apparatus for enhancing monophonic audio signals using phase shifters
A method and apparatus for generating control voltage signals in a surround sound processor is disclosed which utilizes a one-shot monostable multivibrator for minimizing intermodulation distortion...
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5337363 |
Method for generating three dimensional sound
A method for producing three dimensional sound associated with an object that is moving from a first position to a second position with respect to the listener. The method includes the effects of...
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5309517 |
Audio multiplexer
A multiplexer for mixing multiple audio inputs into a plurality of summed audio outputs in which computer-controlled sensors are associated with the amplifier components of the multiplexer for...
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5301236 |
System for producing stereo-simulated signals for simulated-stereophonic sound
A first monophonic signal within a predetermined frequency range and a second monophonic signal at least outside of the predetermined frequency range are produced from a monophonic input signal. A...
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5291556 |
Audio system for a computer display
An audio system for a computer visual display unit (VDU), providing four loudspeakers 1 to 4 at the corners of the VDU screen. Sound is distributed to the loudspeakers under computer program...
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5285503 |
Apparatus for reproducing sound field
This invention relates to a audio system installed in a vehicle. An apparatus for reproducing a sound field according to the invention includes a fader controlling circuit for separating a sound...
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5278909 |
System and method for stereo digital audio compression with co-channel steering
Left right and surround components of a stereo signal are coded into a monaural and small co-channel providing volume steering for recreating a stereo effect with a substantially reduced bit rate....
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5274708 |
Digital stereo sound enhancement unit and method
A method and apparatus for processing digital stereo signals in a stereo system having a left and right channel in which digital information corresponding to the left and right channels is read...
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5235646 |
Method and apparatus for creating de-correlated audio output signals and audio recordings made thereby
An apparatus and method for generating audio output signals having a specified cross-correlation relationships is disclosed. The apparatus operates by phase-shifting different frequency bands of an...
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5233665 |
Phonetic equalizer system
An audio equalizer system includes a filter having a passband extending substantially continuously across the audio spectrum, with the filter having an input terminal and an output terminal. An...
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5220608 |
Method and means for stereophonic sound reproduction
Monophonic sound is transformed into a stereo pattern by arranging two reflectors on a common axis at a predetermined distance from each other with both facing in the direction of the sound. One...
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5208860 |
Sound imaging method and apparatus
The illusion of distinct sound sources distributed throughout the three-dimensional space containing the listener is possible using only conventional stereo playback equipment by processing...
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5187692 |
Acoustic transfer function simulating method and simulator using the same
A plurality of acoustic transfer functions for a plurality of sets of different positions of a loudspeaker and a microphone in an acoustic system are measured by an acoustic transfer function...
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5173944 |
Head related transfer function pseudo-stereophony
An apparatus for producing pseudo-stereophonic sound from a monaural signal including a monaural source having a first speaker disposed in an anechoic room and having a sound output generated by...
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5164840 |
Apparatus for supplying control codes to sound field reproduction apparatus
Control codes for controlling processing of an audio signal by a sound field variation circuit to produce desired sound fields are recorded on a monaural track of a video tape concurrent with...
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5161196 |
Apparatus and method for reducing motion sickness
An artificial horizon of sound is maintained in an enclosure which is irregularly moving in a manner which may induce motion sickness of its occupant(s), by positioning sound emitters in spaced...
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5138660 |
Sound imaging apparatus connected to a video game
Sound location information provided in the game program of a video game is employed by a sound processor to produce two-channel sound signals that provide an apparent location of a sound source to...
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5121433 |
Apparatus and method for controlling the magnitude spectrum of acoustically combined signals
An apparatus and method for providing a sound field to an auditorium or the like is disclosed. The preferred embodiment of the apparatus utilizes random phase shifts to counter the effects of...
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5099739 |
Musical tone generating aparatus
The musical tone generating apparatus includes at least a waveform memory for storing waveform data, a stereophonic effect giving portion, left and right sound systems. The stereophonic effect...
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5095798 |
Electronic gaming device with pseudo-stereophonic sound generating capabilities
An electronic gaming (e.g., video game) device includes a pseudo-stereo sound generator. Plural independent sound generating circuits produce audio signals under microcomputer control. The...
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5095507 |
Method and apparatus for generating incoherent multiples of a monaural input signal for sound image placement
In a sound image placement system, which provides sound image placement by processing a monaural input signal to produce two signals that have a phase and amplitude differential therebetween on a...
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5056149 |
Monaural to stereophonic sound translation process and apparatus
A circuit for generating a multi-channel audio output from a single channel input. In the circuit, the single channel input may include gain control. The circuit divides the single channel input...
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5052685 |
Sound processor for video game
The game software for a video game system includes audio data and sound positioning information, in order that the audio data can be processed in accordance with the sound positioning information...
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5046097 |
Sound imaging process
A process is described to produce the illusion of distinct sound sources distributed throughout the three-dimensional space containing the listener, using conventional stereo playback equipment....
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4933768 |
Sound reproducer
A television receiver includes a volume control circuit (4) for controlling levels of sound signals corresponding to a left channel, a right channel, a center channel and a surround channel and...
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4908858 |
Stereo processing system
A stereo processing system which comprises a left channel and a right channel; a filter in each of the channels for separating an audio signal into a plurality of bands; a phase-shift/delay circuit...
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4873722 |
Multi-channel reproducing system
A multi-channel reproducing system comprises main speakers for sounding an input audio signal as a main channel audio signal, a phase shifter supplied with the input audio signal for shifting a...
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4841572 |
Stereo synthesizer
A stereo image enhancement system, in which difference signal components in relatively quieter difference signal frequency bands are boosted to provide an improved stereo image, is provided with a...
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4833715 |
FM stereo receiver
An FM stereo receiver includes a level detecting circuit for detecting the received electric field intensity and a pseudo stereo circuit for changing the phase of an entered signal and outputting...
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4817149 |
Three-dimensional auditory display apparatus and method utilizing enhanced bionic emulation of human binaural sound localization
An artificial, three dimensional auditory display which artificially imparts localization cues to a multifrequency component electronic signal which corresponds to a sound source. The cues imparted...
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4817162 |
Binaural correlation coefficient correcting apparatus
An acoustic apparatus for correcting the binaural correlation coefficient of a stereo audio signals, particularly for use in automobiles. The signal in at least one of the channels is phase shifted...
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4812921 |
Sound field expansion system for a video tape recorder
A sound field expansion system applicable to a magnetic recording and reproducing apparatus (VTR) which can expand the sound field in a simple construction. In the sound field expansion system, a...
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4792974 |
Automated stereo synthesizer for audiovisual programs
Surround stereo signals are synthesized from the composite or DME monaural sound tracks of audiovisual programs by use of multi-channel, computer-controlled digital circuitry and...
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4783814 |
Stethoscope having pseudostereophonic binaural enhancement
A stethoscope having a monophonic electrical sensor which feeds electrical signals corresponding to heart sounds to a transversal filter to produce pseudostereophonic signals at split outputs which...
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4706287 |
Stereo generator
An improved system is disclosed for generating a signal encoded with stereophonic information and adapted to be used with a monophonic signal to synthesize stereophonic reproduction. The system...
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4694497 |
Automotive multi-speaker audio system with automatic echo-control feature
An automotive audio system separates audio signals from an audio signal source into first and second components. The first component of the audio signal is sent directly to a first main amplifier...
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4685134 |
Multichannel computer generated sound synthesis system
A system capable of synthesizing multi-channel sound for a computer includes a sound generator for each audio channel. A circuit provides a programmable delay so that one generator produces sound...
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4672569 |
Method and apparatus for simulating outer ear free field transfer function
An electroacoustic simulation method and apparatus for imitating electroastically the human outer ear having transmission properties corresponding to those of the human outer ear when exposed to...
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4653096 |
Device for forming a simulated stereophonic sound field
A device for forming a stereophonic sound field in a simulated fashion constructed in the form of a monophonic-to-stereophonic conversion circuit in which a monophonic signal is applied to...
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4648115 |
Pan-pot control apparatus
An input musical tone signal is amplified by a first VCA and then supplied to second and third VCAs. The second and third VCAs are controlled by sine-wave signals which have a 180°-phase...
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4625326 |
Apparatus for generating a pseudo-stereo signal
An apparatus for generating a pseudo-stereo signal comprises at least two signal channels (3, 4), each signal channel (3) comprising a delay line (7) of which an output is fed back to the input...
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4611226 |
Television receiver incorporating a processing section for processing stereo/multichannel-sound signals
A processing section for a television receiver for processing stereo/dual sound signals having a first sound carrier modulated by a first sound signal, and a second sound carrier modulated both by...
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4589128 |
Process for the production of a sound recording and a device for carrying out the process
A process for the reproduction of a sound recording using headphones as the reproduction device, comprising connecting between the sound carrier and the reproduction device a reverberation...
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4556069 |
Method and apparatus for measuring differential auditory system
A test method for measuring the differential processing time of each side of a subject's auditory system and indicating brain dominance employing an audiometric screening system including signal...
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