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A portable partition for use in an automobile having a seat with a seat bench and a seat backrest.
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| Number | Title | Issue Date |
| 8139780 | Using ray tracing for real time audio synthesis According to embodiments of the invention, a sound engine may determine a final sound at a listener location by emulating sound waves within a three-dimensional scene. The sound engine may emulate sound waves by issuing rays from a location of a sound event and trac... | 03/20/2012 |
| 7075210 | Discharging circuit for a piezoelectric device In a piezoelectric actuator, a first driving signal amplified a predetermined sine wave is applied to a piezoelectric device in a direction parallel to a polarization direction thereof. A second driving signal having a negative phase with respect to the first drivin... | 07/11/2006 |
| 7039478 | Method and system for authoring a soundscape for a media application A method and system are provided for allowing a sound designer to design and implement interactive soundscapes based on existing waveform audio files, MIDI files, or audio streams. This is accomplished by using a set of tools consisting of an authoring tool for crea... | 05/02/2006 |
| 6771787 | Waveguide electroacoustical transducing A waveguide system for radiating sound waves. The system includes a low loss waveguide for transmitting sound waves, having walls are tapered so that said crosssectional area of the exit end is less than the cross-sectional area of the inlet end. In a second aspect ... | 08/03/2004 |
| 6445798 | Method of generating three-dimensional sound To produce a three dimensional sound, an original sound recording is duplicated and the original of its duplicate are then recorded with a time delay in the range of 25 ms to 990 ms, preferably 100 to 500 ms. The resulting first echo recording is duplicat... | 09/03/2002 |
| 6405093 | Signal amplitude control circuitry and methods Amplitude control circuitry 5000 includes a first register 5001 for storing received amplitude control data and a second register 5002 for storing amplitude control data transfered from first register 5001. Output circuitry 5005, 5006, 5007 controls the a... | 06/11/2002 |
| 6148175 | Audio entertainment system An entertainment system (100, 100', 100") is provided which includes a plurality of remote stations (110, 110'). Each of the remote stations includes a microphone (118), a transmit section (112b), a receive section (112a) and at least one audio transducer... | 11/14/2000 |
| 5812689 | Low-powered loud speaker provided with echo generator A low-powered loud speaker is provided with one or more echo generators composed of an insulation tube, a first magnetic permeability element, a second magnetic permeability element, and an induction coil wound around the insulation tube. The first and th... | 09/22/1998 |
| 5539830 | Mounting structure for an integral vibration element of a spring type echo machine A mounting structure for an integral vibration element to which a wire having a hook, a magnet, a cushion rubber ring and a vibration spring stopper are fitted, wherein the integral vibration element is inserted to a U-shaped boss and then the inserted po... | 07/23/1996 |
| 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 vibrato effects simultaneous with continuously variable contr... | 07/26/1994 |
| 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 reflector has a larger diameter than the other and is provid... | 06/15/1993 |
| 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 whereby acoustical energy from the stage area is input, and then ... | 07/14/1992 |
| 4718098 | Multi-diaphragm artificial reverberation device An electro-mechanico-acoustic structure in which magnetic wave energy is converted directly into acoustic energy and partly stored and then converted into audiible acoustic energy in a gradual manner over a period of time.... | 01/05/1988 |
| 4653101 | Audio reverberator An audio reverberator system having a piezoelectric transducer filter circuit for outputting selected audio vibrational frequencies having selected amplitudes responsive to inputs from an amplifier. The audio reverberator system includes a piezoelectric t... | 03/24/1987 |
| 4628528 | Pressure wave transducing A loudspeaker driver has its front surface adjacent one end of a low loss acoustic waveguide and its rear surface adjacent to one end of a second acoustic waveguide that is one third the length of the first. The other openings of the waveguides face air a... | 12/09/1986 |
| 4248120 | Stringed musical instrument with electrical feedback A stringed instrument with feedback is formed from a string of 30 to 100 feet in length stretched taught and having pickup and driving transducers located at respective opposite ends of the string. An electronic processing system receives a signal from th... | 02/03/1981 |
