Matches 201 - 250 out of 301 < 1 2 3 4 5 6 7 >
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4731848 Spatial reverberator  
A method and apparatus for processing audio signals utilizing reverberation in combination with directional cues to capture both the temporal and spatial dimensions of a three-dimensional natural...
4727581 Method and apparatus for increasing perceived reverberant field diffusion  
A method and apparatus for increasing perceived reverberant field diffusion in systems providing electro-acoustic reverberant enhancement to rooms or spaces includes independent modulation of the...
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...
4706291 Reverberation imparting device  
A reverberation imparting device comprises a prememory storing an input signal, a level detection circuit responsive to data stored in the prememory for detecting presence or absence of the input...
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...
4672671 Audio frequency signal preamplifier for providing controlled output signals  
A preamplifier adapted to receive audio frequency electrical signals generated by a musical instrument for providing controlled output signals therefrom having selected distortion and harmonic...
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...
4649564 Acoustic systems  
An acoustic system comprising an input transducer connected by a first severable path to the input of reverberation means for producing reverberation of the required decay rate of the sound field...
4638506 Sound field simulation system and method for calibrating same  
The present invention relates to a system for generating within a relatively small enclosed space a sound field corresponding to that in a relatively large enclosed space having specific acoustic...
4628789 Tone effect imparting device  
Tone signals from plural keyboard systems are supplied to an effect imparting circuit via a distribution circuit. The effect imparting circuit comprises plural effect imparting channels and the...
4630301 Voice activated echo generator  
A voice activated echo generator employs digital voice recording technology to digitize several spoken words of audio using low-cost encoding techniques. The audio information is stored in dynamic...
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...
4611300 Digital delay line  
A digital delay system employs a phase-locked loop to control a recall address generator. The phase-locked loop comprises a subtractor for determining the difference between the store address and...
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...
4586417 Electronic musical instruments provided with reverberation tone generating apparatus  
In an electronic musical instrument, a reverberation tone most suitable for a selected tone color is applied to a musical tone with the selected tone color. In a modification, the electronic...
4584701 Reverberator having tapped and recirculating delay lines  
A reverberator comprises a tapped delay line (2, 3, 4, 5, 10) connected to an analog audio signal source (1) for deriving therefrom at least one pair of output signals which are respectively...
4581759 Signal delaying device  
A signal delaying device delays a digital signal corresponding to an audio signal. Input signal data is sequentially written into a memory with regularity and data at an address which was written a...
4569268 Modulation effect device for use in electronic musical instrument  
A modulation effect device for use in an electronic musical instrument which utilizes, as a digital modulation circuit, a digital memory device for storing digitized musical tone signals. The...
4509191 Electronic stereo reverberation device  
A stereo or two channel electronic reverberation device is disclosed comprising an analog delay device which receives audio signals and provides delayed output signals at a plurality of outputs,...
4489439 Electronic stereo reverberation device with doubler  
A stereo or two channel electronic reverberation device is disclosed comprising an analog delay device which receives audio signals and provides delayed output signals at a plurality of outputs,...
4475229 Device for producing artifical reverberation  
In a device for producing artificial reverberation by means of a one-dimensional waveguide, a one-dimensional waveguide is utilized, which is obtained using digital circuits which contain at least...
4472993 Sound effect imparting device for an electronic musical instrument  
A sound effect imparting device for an electronic musical instrument is capable of imparting a plurality of desired sound effect such as vibrato and reverberation effects to a digital musical tone...
4472834 Loudspeaker system  
A plurality of delay circuits each having a different delay time are inserted between an audio signal source and each speaker in a multiple-speaker system so that the frequency dependence of...
4449234 Reverberation apparatus  
A reverberation apparatus includes a signal input terminal to be supplied with an input signal, an operational amplifier having an inverted input terminal, a non-inverted input terminal, and an...
4404427 Audio signal processing system  
An improved audio signal processing system for use in an audio reproduction apparatus is described. The apparatus is of the type for generating ambient effects and includes at least two channels...
4389915 Musical instrument including electronic sound reverberation  
An electronic reverberation system for use in an electronic musical instrument comprises a random access memory wherein two or more time delay channels are defined by address allocation in a...
4371748 Device for artificial reverberation  
An artificial reverberation device comprising first, second, third and fourth delay lines and first and second adder circuits with at least a part of said first, second, third and fourth delay...
4366346 Artificial reverberation apparatus  
Artificial reverberation apparatus comprising a delay device (1) provided with a feedback circuit (5) and a feed-forward circuit (6) having a gain equal and opposite to that of the feedback circuit...
4361727 Sound reproducing arrangement for artificial reverberation  
An artificial reverberation arrangement comprising a number of mechanical units each of which comprises a microphone, an amplifier and a loudspeaker. These units are arranged in such a way relative...
4352954 Artificial reverberation apparatus for audio frequency signals  
An artificial reverberation apparatus for audio frequency signals, comprises a first delay device preceded by an adder. A feedback circuit couples the output of the delay device to an input of the...
4350072 Reentrant reverberation generator for an electronic musical instrument  
A reverberation effect is produced in a musical tone generator of the type in which waveshape data points are sequentially and repetitively read out of a memory at a rate corresponding to the...
4349697 Sound reproduction system  
A system for converting an audio signal into a three dimensional phased sound that simulates the performance of live music in an acoustically superior music hall includes a signal divider which...
4338581 Room acoustics simulator  
Room acoustics simulation is achieved by digitally defining delay and weighting parameters and generating sampled analog signal responses. In the early portion of a response term an accurate...
4329544 Sound reproduction system for motor vehicle  
A sound reproduction system for a motor vehicle in which two channel signals are applied to two loudspeakers provided in the passenger compartment to reproduce the signals. The system includes a...
4268717 Time-modulated delay system and improved reverberation simulator using same  
A reverberation simulator which includes a delay system having a plurality of temporally fixed output delay taps and a plurality of time-modulated delay output taps. A first mixer circuit combines...
4244262 Echo-machine employing low pass filters with a variable cut-off frequency  
When the frequency of an input sound signal applied to a shifting type echo-machine is close to that of the shift pulse thereof, a false signal appears at the output terminal of the echo-machine,...
4237343 Digital delay/ambience processor  
A processor for audio program material which synthesizes simulated reflection and reverberation signals for use in creating the illusion of a specific modeled listening environment. A preferred...
4227049 Audio system for isolating sounds from individual components of drum set-up for selectively mixing  
A sound system, particularlyuseful for isolating the signals from each of a plurality of different sources disposed closely together, such, as for example, from the components of a drummer's set-up...
4219880 Signal-processing and conversion systems  
A signal-processing system, particularly adapted to digitally process analog signals, and including computation apparatus which carries out operations on the signals, also includes a control memory...
4215242 Reverberation system  
A reverberation sound producing apparatus includes a nonuniformly tapped delay line, a summing circuit applying an audio signal to the input of the tapped delay line and a feedback path coupling...
4186643 Apparatus for chorus effect in electronic musical instruments  
Apparatus for chorus effect in an electronic musical instrument in which a passing circuit for a musical tone signal is obtained from a musical tone signal generator by operation of a key. The...
4184047 Audio signal processing system  
An audio signal processing system for enhancing audio signals such as music by providing reverberation, generation of stereophonic or quadraphonic effects, chorusing, flanging, pitch change,...
4181820 Electric reverberation apparatus  
An electronic reverberation apparatus, for producing artificial reverberation on a purely electronic basis with a digital computer, comprises a plurality of loops having different delay times and...
4167651 Mixing two signals derived from an audio source without oscillation  
The reverberation system loudspeaker is fed at one terminal by the direct signal and at the opposite terminal by the delayed signal such that the loudspeaker impedance forms part of the feedback path.
4164884 Device for producing a chorus effect  
A device for producing a chorus effect in an electronic musical instrument. An electronic delay circuit and a non-modulating amplifier means are coupled in parallel and the outputs are mixed in a...
4157511 Electronic reverberation device  
An electronic reverberation device comprising an input amplifier and an output amplifier connected in a circuit in which a delay device is connected between an output of the input amplifier and an...
4105864 Stereo and spaciousness reverberation system using random access memory and multiplex  
A sound reproduction arrangement and audio signal delay apparatus suitable for use in such an arrangement, includes, in a listening area, one or more primary sound sources for mono- or multichannel...
4099027 Speech scrambler  
A speech scrambler for rendering unintelligible a communications signal for transmission over nonsecure communications channels includes a time delay modulator and a coding signal generator in a...
4097689 Out-of-head localization headphone listening device  
A headphone device comprising a pair of headphones for receiving output signals from various acoustic apparatus, wherein a direct sound signal or an output signal of an acoustic apparatus is...
4093820 Electronic echo generation equipment  
An electronic sound generation system wherein an input signal is frequency modulated, and the modulated signal passes through a series of cascaded shift registers. Amplifiers are provided for...
Matches 201 - 250 out of 301 < 1 2 3 4 5 6 7 >