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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...
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6375323 |
Foldable eyewear with mechanism facilitating quick opening
Eyewear which comprises a frame front and a first and second hinge coupled to the frame front. A first and second temple are pivotably coupled to the frame front through the first and second hinge...
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6351540 |
Digital echo circuit
An input musical sound signal is converted into a digital signal by an A/D converter ( 10 ), and then supplied to a feed back loop ( 22 ) having a digital delay circuit ( 16 ), so that an echo is...
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6343131 |
Method and a system for processing a virtual acoustic environment
A virtual acoustic environment comprises surfaces which reflect, absorb and transmit sound. Parametrisized filters are used to represent the surfaces, and parameters defining the transfer function...
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6259793 |
Sound reproduction method, sound reproduction apparatus, sound data creation method, and sound data creation apparatus
An apparatus for continuously reproducing plural sound data has a start end/terminal end determination unit for determining the start end/terminal end of the continued respective sound data, a...
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6166315 |
Device for processing a microphone signal of a karaoke apparatus
In accordance with a kind of effect, an effect adding section (38) adds an original microphone signal with an effect signal and outputs the added signal, or outputs an effect signal in place of the...
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6157724 |
Apparatus having loudspeakers concurrently producing music sound and reflection sound
A music apparatus is constructed for introducing a music sound into an acoustic space, and is equipped with an acoustic feedback system for introducing a reflection sound into the acoustic space....
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6118394 |
Circuit for obtaining an output signal having distributed frequencies around a frequency of an input signal
In a surround circuit, an audio signal or another analog signal is converted to a digital signal by an A/D conversion circuit (11) and stored in a memory (12). Subsequently, the digital signal read...
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6111962 |
Reverberation system
A reverberation system produces reverberant sound supposed to be generated when sound emitted from a real sound source location inside a virtual acoustic room to be simulated is reflected by...
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6091824 |
Reduced-memory early reflection and reverberation simulator and method
Early reflection and reverberation processing using a decimating filter simulates the high frequency attenuation of an actual physical and acoustical environment and advantageously reduces the...
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6085309 |
Signal processing apparatus
A signal processing apparatus executes a plurality of microprograms stored in a microprogram memory device in a time-sharing manner, so as to perform arithmetic operations on a digital signal...
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6078669 |
Audio spatial localization apparatus and methods
Audio spatial localization is accomplished by utilizing input parameters representing the physical and geometrical aspects of a sound source to modify a monophonic representation of the sound or...
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6068489 |
Karaoke amplifier with variably settable range of parameter to control audio signal
A karaoke amplifier is constructed for amplifying an audio signal to sound a karaoke performance while processing the audio signal according to a value of a control parameter to acoustically...
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6064743 |
Wavetable audio synthesizer with waveform volume control for eliminating zipper noise
A digital wavetable audio synthesizer is described. The synthesizer can generate up to 32 high-quality audio digital signals or voices, including delay-based effects, at either a 44.1 KHz sample...
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6047073 |
Digital wavetable audio synthesizer with delay-based effects processing
A digital wavetable audio synthesizer is described. The synthesizer can generate up to 32 high-quality audio digital signals or voices, including delay-based effects, at either a 44.1 KHz sample...
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6005949 |
Surround sound effect control device
A surround sound effect control device includes a plurality of sound signal sources each for producing a sound signal, a sound source selection signal generator for generating a sound source...
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5999630 |
Sound image and sound field controlling device
On the basis of localization control data, a sound image localization controlling circuit reproduces input audio signals via a plurality of speakers after having applied predetermined...
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5978492 |
Sound source data generation method, recording medium, and sound source data processing device
Sound source data is constituted by a 14-byte sound data area SA consisting of 28 samples of 4-bit adaptive differential PCM data and a sound parameter area PA consisting of loop information LP,...
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5974154 |
Effector with integral setting of control parameters and adaptive selecting of control programs
In an echo effector for imparting an echo effect to an audio signal based on values of a plurality of parameters, a memory is provided for memorizing an interrelationship among the plurality of the...
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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...
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5939656 |
Music sound correcting apparatus and music sound correcting method capable of achieving similar audibilities even by speaker/headphone
A music sound correcting apparatus for correcting a music sound signal entered thereinto to selectively supply the corrected music sound signal to a speaker and a headphone, is provided with a jack...
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5917917 |
Reduced-memory reverberation simulator in a sound synthesizer
A sound or music synthesizer includes a reverberation simulator having a substantially reduced volatile storage, random access memory, or buffer size in comparison to conventional reverberation...
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5896456 |
Automatic stereophonic manipulation system and apparatus for image enhancement
The manipulation system and apparatus receives electronic signals which are to be processed and recorded for playback as enhanced stereophonic audio signals from two laterally spaced loudspeakers...
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5896291 |
Computer system and method for implementing delay-based effects using system memory
A system and method is provided for performing sound synthesis with delay-based special effects which may be algorithmically implemented using one or more time-delay elements The system implements...
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5893067 |
Method and apparatus for echo data hiding in audio signals
A method of hiding information in a host audio signal introduces one or more echoes into the signal. The separation in time between the host signal and an echo is associated with the value of a...
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5880390 |
Reverberation effect imparting apparatus
In a reverberation effect imparting apparatus, sampled data of an input signal is written into a RAM 23 and the data is read out after an elapse of a predetermined time period, thereby imparting a...
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5876213 |
Karaoke apparatus detecting register of live vocal to tune harmony vocal
A karaoke apparatus is constructed to perform a karaoke accompaniment part and a karaoke harmony part for accompanying a live vocal part. A pickup device collects a singing voice of the live vocal...
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5872727 |
Pitch shift method with conserved timbre
An improved method for shifting the pitches of a tone is disclosed. It comprises: (a) subjecting a digitized original waveform to a whitening process using an all-zero filter (AZF) to obtain a...
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5862231 |
DSP programming apparatus and DSP device
A DSP programming apparatus capable not only of reducing work load for software engineers at the time of doing DSP programming but also of modularizing commonly usable algorithms, as well as to...
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5862233 |
Wideband assisted reverberation system
A wideband assisted reverberation system has multiple microphones (M1-M3) to pick up reverberant sound in a room, multiple loudspeakers (L1-L3) to broadcast sound into the room, and a reverberation...
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5818944 |
Reverberation generating system for generating later part of reverberation from initial part of reverberation and method of generating the reverberation
A reverberation generating system stores parameter data representative of a series of timings and a series of sound intensities for an initial part of reverberation, and calculates a series of...
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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...
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5804751 |
Electronic musical instrument for electronically generating tone together with resonant sound variable in response to pedal action
In order to change an electronic sound between a piano sound generated without manipulation of a damper pedal and a piano sound generated under manipulation of the damper pedal, an electronic...
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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...
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5796845 |
Sound field and sound image control apparatus and method
The apparatus of the invention calculates filter coefficients for controlling sound field and sound image, based on a plurality of first impulse response signals and a pair of second impulse...
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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...
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5774560 |
Digital acoustic reverberation filter network
A reverberation network for processing an audio signal including a plurality of wave-ladder filters, each of which simulates a corresponding reflected audio signal from wave propagation in a...
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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...
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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...
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5768396 |
Online karaoke system with flying start performance
A karaoke system of an online type is comprised of a karaoke station for sounding a karaoke performance according to a performance data, and a host station for supplying the performance data to the...
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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...
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5761295 |
Telephone instrument and method for altering audible characteristics
A telephone instrument creates spatially simulated sound signals from signals received from a telephone line. The monaural signals are separated to two left and right channels. In each channel, the...
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5739452 |
Karaoke apparatus imparting different effects to vocal and chorus sounds
A karaoke apparatus is provided with a pickup device that collects a singing voice sound to convert the same into a corresponding vocal signal. Further, a music generator device generates a music...
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5740253 |
Sterophonic sound field expansion device
A stereophonic sound field generation device includes a left side localized reflected sound generation circuit which generates a left channel reflected sound signal and a left channel cancel signal...
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5732142 |
Musical sound reproduction controller with two-stage adjustment of tone
A sound reproduction control apparatus processes an audio signal in reproduction of a musical sound to control a tone of the musical sound while imparting an effect to the musical sound. A...
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5729613 |
Reverberators for use in wide band assisted reverberation systems
A multi-channel reverberation system has a substantially constant multi-channel power gain at audio frequencies and comprises multiple signal inputs, one for each input channel, a number of comb...
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5727067 |
Sound field control device
A sound field control device includes a surround decoder for decoding an input surround encode signal and generating three channel signals of L, C and R to be reproduced in front left, front center...
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5727066 |
Sound Reproduction systems
A stereophonic sound reproduction system is aimed at synthesizing at a multiplicity of points (L) in the listening space. An auditory effect obtaining at corresponding points (K) in the recording...
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5724429 |
System and method for enhancing the spatial effect of sound produced by a sound system
System and method for enhancing the spatial effect of sound produced by a sound system. In an exemplary embodiment, the system includes a reverberator and a sound spatialization unit, which are a...
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5703312 |
Electronic musical instrument and signal processor having a tonal effect imparting function
There are provided a tone source for generating tone signals in plural channels independently and effect impartment sections, provided in corresponding relations to the channels, for imparting...
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