Matches 351 - 400 out of 417 < 1 2 3 4 5 6 7 8 9 >


Match Document Document Title
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...
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...
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...
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...
4087631 Projected sound localization headphone apparatus  
The present invention relates to a headphone apparatus which is adapted to be connected, for headphone listening, to a reproduction apparatus for reproducing a program source such as a record, a...
4087629 Binaural sound reproducing system with acoustic reverberation unit  
A binaural sound reproducing system for transmitting sound radiated from an electro-acoustic transducer through a sound wave transmission path such as a pipe to the left and right ears of a...
4061876 Electronic sound enhancing system  
An electronic sound enhancing system for improving the symphonic criteria of sound emanating from a performing shell is provided. Microphones are disposed in the performing shell for receiving...
4053711 Simulation of reverberation in audio signals  
An audio system which achieves a concert hall reverberation effect from a stereo input signal. From two stereo input signals the audio system produces quadraphonic signals suitable for application...
4049912 Channel mixer for multi-channel audio systems  
An audio system which achieves a concert hall reverberation effect from a stereo input signal. From two stereo input signals the audio system produces quadraphonic signals suitable for application...
4039755 Auditorium simulator economizes on delay line bandwidth  
A filter network for use with an acoustic signal reproduction system having at least two, spatially separable, speaker means each capable of reproducing acoustic waves from corresponding...
4027101 Simulation of reverberation in audio signals  
An audio system which achieves a concert hall reverberation effect from a stereo input signal. From two stereo input signals the audio system produces quadraphonic signals suitable for application...
4021613 Audio information modifying apparatus  
An apparatus which modifies sound by introducing selected levels of clipping, sustaining, tone generation, echo effects, phasing effects, and suppression of low and high frequency signals to the...
4005268 Solid state echo producing system  
A solid state electronic system for producing a variable time delayed echo signal from a source of electro-audio input signals including circuitry for reducing noise. For low level signal...
3992582 Reverberation sound producing apparatus  
A reverberation sound producing apparatus is disclosed which has an input terminal supplied with audio frequency signals, filters for dividing the audio frequency signals applied to the input...
3980828 Reverberation system with extended frequency response  
A reverberation system which employs low cost, spring reverberators and obtains a frequency response to beyond 9kHz. The high frequency components of an input signal are frequency shifted, to a...
3939305 Reverberation mixer circuit  
This invention relates to a circuit for mixing a direct audio signal with a reverberation signal. The circuit includes an amplitude control for the reverberation signal and an active gain...
3939437 All-pass reverberator with an MOS delay line  
The invention provides a circuit for an all-pass reverberator with an MOS delay line and feed back amplifier. The circuit compensates for the frequency-dependent attenuation of the delay line. Two...
3911379 Reverberation device  
A plurality of signal delay lines are provided each constituted by a number of bucket brigade devices, the number being different from one line to another and consequently the delaying time being...
3881057 Reverberation-imparting apparatus using a bucket brigade device  
A bucket brigade device constructed of a plurality of units and constituting a signal delay path is supplied with sound signals from a sound source such as an acoustic apparatus. The bucket...
3879578 Sound masking method and system  
A method and apparatus for masking sound comprising, receiving in an area an original sound signal which has to be masked. The original sound signal is then delayed to produce a time-delayed...
3684835 FOUR CHANNEL STEREO SYNTHESIZER  
A stereo synthesizer according to which a four-channel "surround stereo" is developed from either two-channel or single-channel sources. The system performs a number of transformations on the...
3681531 DIGITAL DELAY SYSTEM FOR AUDIO SIGNAL PROCESSING  
A plural sound delay system for use in sound reinforcement in auditoria and in other applications, comprising a digital encoding system for converting an analog audio signal to digital form, a...
3624266 ELECTRONIC MUSICAL INSTRUMENT WITH DUAL CHANNELS FOR REVERBERATION AND PULSATO  
A reverberation unit derives an instrument signal through an electrical phase shift vibrato device that imposes a maximum frequency deviation that is substantially constant for all notes in the...
3541260 AUDIO MIXING SYSTEM  
3530249 ELECTRONICALLY SIMULATED TAPE ECHO SYSTEM  
3525809 ELECTRONIC ORGAN SOUND REPRODUCTION APPARATUS  
3484563 SOUND REVERBERATION SYSTEM  
3463868 ELECTRIC MUSICAL INSTRUMENT REVERBERATION NONLINEAR CONTROL SYSTEM  
3392240 Acoustic systems  
3300583 Automobile speaker system with reverberation  
3288931 Tapered spring reverberation delay line drive apparatus  
3259691 Speaker control system with reverberation  
3251942 Circuits for the simultaneous amplification of an original signal and a signal derived therefrom  
3221092 Automatic reverberation control  
3217080 Electroacoustical system  
3214519 Reproducing system  
3200199 Stereophonic reverberation circuit  
3162727 Stereophonic reverberation system  

Matches 351 - 400 out of 417 < 1 2 3 4 5 6 7 8 9 >