Matches 251 - 300 out of 417 < 1 2 3 4 5 6 7 8 9 >


Match Document Document Title
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...
5434923 Acoustic apparatus  
In an acoustic reproduction system, an audio signal obtained from a source is ornamented by a sound processing pattern such as reflecting and reverberating sounds and then the sound processed...
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...
5412732 Stereo surround system  
Stereo audio signals of right and left channels are inputted to a stereo surround system. The stereo surround system is provided with: a right side speaker group including at least two speakers...
5394472 Monaural to stereo sound translation process and apparatus  
A process and apparatus are disclosed which provides increased perceptual location control and spatial characteristics to existing multi-channel material, said apparatus includes a plurality of...
5394474 Echo attaching circuit and audio device using the same  
This invention includes a compression circuit for compress one of an audio signal and a mixture of the audio signal and an echo signal, a delay circuit for delaying an output signal of the...
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...
5386529 Digital signal processor for use in sound quality treatment by filtering  
A digital signal processor in which the control device transmits to and writes into the buffer memory the data necessary for multiplication or for generating addresses in the external memory, and...
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...
5381482 Sound field controller  
A sound field controller for generating apparent sound sources by adjusting the amplitude and delay time of a sound signal so that the sound will be perceived by plural listeners as sound coming...
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...
5369710 Sound field correcting apparatus and method  
Sound field correcting apparatus and method, in which at least two reflected sound generating circuits are cascade connected and output signals of the reflected sound generating circuits are...
5333203 Reverb and selectable tremolo and vibrato electron tube preamplifier  
A preamplifier device employing electron tubes wherein the preamplifier has tremolo/vibrato circuits independent from reverb circuits allowing continuously variable control of either tremolo or...
5280528 Band pass filter circuit for rear channel filtering in a surround processor  
A method and apparatus for generating control voltage signals in a surround sound processor is disclosed which utilizes a on-shot monostable multivibrator for minimizing intermodulation distortion...
5272274 Electronic musical instrument with reverberation effect  
An electronic musical instrument is provided with a touch data generating device and a reverberation unit which generates a reverberation signal. The reverberation unit generates the signal...
5260920 Acoustic space reproduction method, sound recording device and sound recording medium  
A system for reproducing a sound field simulating a real acousting space includes a sound collecting device, a sound recording device and a sound reproducing device. The sound collecting device...
5261005 Sound field control device  
In the sound field control device, main signals and a surround signal are generated on the basis of input left and right 2 channel signals, and 4 channel main sound field signals and 4 channel...
5257313 Surround audio apparatus  
A surround audio apparatus is comprised of an input terminal to which a stereo audio signal encoded for surround reproduction is supplied, an analog-to-digital converter for converting the stereo...
5255323 Digital signal processing device and audio apparatus using the same  
A digital signal processing device for outputting a holding data in an output register from a DSP in synchronism with a second clock pulse having a frequency lower than that of a first clock pulse...
5241604 Sound effect apparatus  
In a sound effect apparatus which processes audio signals, a volume controller controls the volume of sound and a preset volume is detected by a detector. A plurality of delay lines delay audio...
5233661 Sound field variable apparatus  
A sound field is generated responsive to direct sound picked up by a direct-sound collecting microphone and indirect-sound picked up by an indirect-sound collecting microphone. Respective...
5223657 Musical tone generating device with simulation of harmonics technique of a stringed instrument  
A musical tone generating device is capable of simulating various special playing techniques for a stringed instrument in which the harmonic spectrums of produced sound is enhanced, or otherwise...
5216718 Method and apparatus for processing audio signals  
A method and an apparatus for processing audio signals with a directional emphasis by providing other channels besides the left and the right channels. An audio signal processing apparatus is...
5201005 Sound field compensating apparatus  
A sound field compensating apparatus is provided in which delay data produced by one of the delay means in a FIR filter, which is realized by the action of a DSP, is commonly used for producing a...
5197099 Multiple-channel audio reproduction apparatus  
A multiple-channel audio reproduction apparatus has an audio demodulator for demodulating an input signal to produce audio signals for multiple channels. One or more signal-processing circuits...
5195141 Digital audio equalizer  
There is disclosed a digital audio equalizer comprising an analog/digital (A/D) converter for converting an analog audio signal into a digital audio data, a digital interface receiver for...
5195140 Acoustic signal processing apparatus  
An acoustic signal processing apparatus comprising infinite impulse response type digital filters and phase control device. The filters receive an acoustic signal. Outputs from the filters are...
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...
5172415 Surround processor  
A surround processor includes a time constant processing circuit for smoothing directional information signals from a detector with continuously variable time constants in order to generate one or...
5166464 Electronic musical instrument having a reverberation  
Either the frequency of phase of an original musical sound signal is modulated, the musical sound signal is weighted, a reverberation effect is added thereto and the thus modified signal is added...
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...
5146507 Audio reproduction characteristics control device  
An audio reproduction characteristic control device reproduces various sound fields by producing reflected sounds of a reproduced source signal. Frequency response characteristic correction...
5144673 Reflection sound compression apparatus  
A reflection sound compression apparatus extracts and compresses, most appropriately with a physical evaluation value, an impulse response of a hall, etc. which is obtained by calculation and...
5142586 Electro-acoustical system  
A method and acoustical system for processing sound signals according to the principles of the acoustic holography of sound wave field extrapolation.
5131051 Method and apparatus for controlling the sound field in auditoriums  
A system for controlling the second field in auditorium having the feature that stage and audience seating areas are different acoustically, which includes a first assisted acoustics system...
5128999 Sound field correcting apparatus  
There is disclosed a sound field correcting apparatus for adding indirect sound signals to audio signals from a decoder when a steering emphasis operation is not executed in a decoder and for...
5129004 Automotive multi-speaker audio system with different timing reproduction of audio sound  
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...
5123050 Sound field control system  
In the process of forming the effect sound for reproducing a sound field, a down-sampling part for reducing the sampling frequency of the digital signal is disposed before the step of the digital...
5123051 Sound field reproducing apparatus  
A sound field reproduction apparatus comprises a reflectional sound signal generating circuits for generating quasi-reflectional sound signals by summing a plurality of delay signals obtained by...
5119428 Electro-acoustic system  
Electro-acoustic system for improving the acoustic of a predetermined room, said system comprising a microphone array having a plurality of microphones and a loudspeaker array having a plurality...
5119420 Device for correcting a sound field in a narrow space  
A sound field correcting device provides for a natural acoustic localization of the outputs of right and left channels of an acoustic sound source. At least one of right and left channel audio...
5111530 Digital audio signal generating apparatus  
A digital audio signal generating apparatus suitable for the application to electronic musical instruments, sound effect generators for amusement machines and the like. This digital audio signal...
5109419 Electroacoustic system  
An electroacoustic system for acoustic enhancement of a room that includes a sound source location. The electroacoustic system includes a microphone spaced from the sound source location, an array...
5091951 Audio signal data processing system  
An audio signal data processing system includes first and second processing devices for processing audio signal data, the first and second processing device having input and output ports of at...
5083311 Sound field producing apparatus  
An apparatus for producing an improved sound field in an acoustic space. The apparatus comprises a signal source for producing a source signal. The source signal is applied to a loudspeaker for...
5073942 Sound field control apparatus  
A sound field switcher inputs an output sound field signal from a sound field producer. The inputted sound field signal is delayed sequentially by plural delayers, after which they are multiplied...
5060270 Reverberation circuit  
A reverberation circuit comprises an amplifier, attenuation circuit, a feedback component, and a delay circuit. The amplifier, delay circuit, and feedback component form a feedback loop. The...
5050216 Effector for electronic musical instrument  
An input waveform signal is converted in an A/D converter into a digital signal to be written in a waveform memory under control of a tone generation control unit. The written digital signal is...
5040219 Sound reproducing apparatus  
A sound reproducing apparatus is capable of reproducing a stereo or a voice signal and adding thereto effect sounds, such as an initial reflected sound, and reechoed sound during the reproducing....
5040220 Control circuit for controlling reproduced tone characteristics  
A control circuit for controlling reproduced tone characteristics capable of prestoring sound field characteristics to be imparted to a reproduced tone and frequency characteristics of the...

Matches 251 - 300 out of 417 < 1 2 3 4 5 6 7 8 9 >