Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 8189811 | System and method for processing audio signals An audio signal is processed by passing it through a speaker, the cone of which is mechanically connected to a moving sleeve. A coil is wrapped around the sleeve. There is a metal shaft displaced inside of the sleeve. The shaft is connected to a magnet. Thus, moveme... | 05/29/2012 |
| 8031882 | Method and apparatus to reduce the effect of flux modulation in speakers A speaker feedback system has a linear current feedback derived from a current sensing resistor. A linear motional feedback from the active speaker driver is derived from a sensing coil mechanically coupled with the driver coil of the speaker, the driver coil receiv... | 10/04/2011 |
| 7983429 | Speaker system utilizing input from a transducer in proximity to a separate speaker A speaker system utilizes input from a transducer that receives an acoustical signal produced by a speaker that is separate from the speaker system. The acoustical signal is amplified and drives a speaker of the speaker system. The speaker system is thereby provided... | 07/19/2011 |
| 7826625 | Method and apparatus for frame-based loudspeaker equalization A method and apparatus for loudspeaker equalization are described. In one embodiment, the method comprising generating a set of parameters using an invertible, non-linear system based on input audio data and output data corresponding to a prediction of an output of ... | 11/02/2010 |
| 7796768 | Variable alignment loudspeaker system A loudspeaker system has a primary driver and an active radiator sealed in an enclosure where the active radiator is adapted to vary its operating characteristics to tune the sound pressure level and resultant frequency response generated by a primary driver. The pr... | 09/14/2010 |
| 7720236 | Updating modeling information based on offline calibration experiments A system such as a speakerphone may include a processor, memory, a speaker and a microphone. The processor may be configured (via program instructions stored in the memory) to calibrate the speaker by: outputting a stimulus signal; receiving an input signal correspo... | 05/18/2010 |
| 7697701 | Environment adaptable loudspeaker It is known to make the performance of a loudspeaker “environment adaptive” in controlling a filter unit based on a measurement of the velocity/acceleration of the loudspeaker diaphragm and the associated sound pressure in front of the diaphragm, by means of an ... | 04/13/2010 |
| 7542577 | Input sound processor An input sound processor compares power at each frequency component of an input sound with a reference value, and sets multiplication points indicating frequency components at which the total power of the input sound is to be determined. A product-sum operation is p... | 06/02/2009 |
| 7477751 | Method and apparatus for sound transduction with minimal interference from background noise and minimal local acoustic radiation A transducer senses sounds produced by a talker or other source and measures acceleration of air. Enhancement of acceleration is accompanied by reduction of the portion of the sound energy that escapes from the regions around the transducer. The result is a high sen... | 01/13/2009 |
| 7436967 | Apparatus and method of limiting power applied to a loudspeaker A method of limiting the power applied to a loudspeaker is disclosed, in which both the voltage and current applied to the loudspeaker are measured, and instantaneous power is directly calculated and used to control the level of the input signal that drives the ampl... | 10/14/2008 |
| 7359519 | Method and apparatus for compensating for nonlinear distortion of speaker system A method and an apparatus for compensating for nonlinear distortion are provided to divide audio signals reproduced in a nonlinear speaker system into linear and nonlinear components in a time domain and a frequency domain, and then generate inversely-corrected sign... | 04/15/2008 |
| 7340066 | Audio device heat transferring An acoustic device having a heat producing device, such as an amplifier and a heat sink for transferring heat from the amplifier. The acoustic device has a cone having an inner surface, and a support structure defining a volume. The heat producing element and the he... | 03/04/2008 |
| 7321661 | Current feedback system for improving crossover frequency response A loudspeaker is provided for receiving an incoming electrical signal and transmitting an acoustical signal. The loudspeaker may include a power amplifier that has an input and an output, where the input receives the incoming electrical signal. The loudspeaker may a... | 01/22/2008 |
| 7317804 | Sound collecting device minimizing electrical noise A sound collecting device is provided which is designed to minimize adverse effects on an output caused by exposure of an electroacoustic transducer to the air. The device includes an electroacoustic transducer and a vibrating circuit. The transducer is exposed to t... | 01/08/2008 |
| 7315204 | Class AB-D audio power amplifier Audio power amplifier circuits that are arranged to operate in either a class AB or a class D operating mode. A drive circuit is configured to share control between a class AB driver and a class D modulator/driver circuit. The input signal level is monitored to dete... | 01/01/2008 |
| 7293627 | Active exhaust muffler An active exhaust muffler for an exhaust system of an internal combustion engine, having a housing through which a pipe system passes, the pipe system designed to be permeable for airborne sound in a first space, having an antisound generator which is arranged in a ... | 11/13/2007 |
| 7279973 | H-bridge utilizing intermediate switching phase(s) An H-bridge circuit capable of performing switching using one or more intermediate voltage phases each held for a period of time in the midst of the switching operation. This reduces power dissipation associated with the switching operation, while only using one set... | 10/09/2007 |
| 7260229 | Position sensor for a loudspeaker The invention relates to an improved electro-dynamic loudspeaker. The electro-dynamic loudspeaker comprises (a) a voice coil for generating an acoustic waveform, the voice coil being longitudinally movable from an initial rest position to generate the acoustic wavef... | 08/21/2007 |
| 7249511 | Method of detecting resonant frequency, method of selecting resonance frequency, and device for detecting resonant frequency sensor A device for detecting a resonant frequency comprises a sound source, a switch, a mixer, and a sound meter. The switch and mixer are capable of switching between a first state in which the switch and mixer output a measurement signal and a second state in which the ... | 07/31/2007 |
| 7215766 | Headset with auxiliary input jack(s) for cell phone and/or other devices Headsets are used in variety of applications to facilitate one- or two-way audio communications between users and/or devices. The present inventor recognized that conventional headsets lack means for successfully integrating more than one audio source, despite their... | 05/08/2007 |
| 7207413 | Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems An acoustic impedance matching enclosure is provided having a driver loaded into a chamber buffering the throat/mouth of a closed loop transmission line. Transmission line consists of a termination member, outer and inner enclosure walls, high-density lining and thr... | 04/24/2007 |
| 7209566 | Method and apparatus for determining a nonlinear response function for a loudspeaker A nonlinear response function of a loudspeaker is determined by an iterative process during which the nonlinear response function and a linear response associated with an echo and microphone are alternately revised. ... | 04/24/2007 |
| 7203324 | Audio feedback processing system This invention is an audio system capable of identifying frequencies of feedback signals and filters these feedback signals. Frequency interpolation is utilized on a sampled frequency spectrum signal corresponding to a feedback signal, where the frequency interpolat... | 04/10/2007 |
| 7184556 | Compensation system and method for sound reproduction A sound compensation system alters an electrical audio signal for input to a sonic reproduction device having associated behavioral characteristics. The behavior characteristics of the device are defined by individual or groups of individual components of the sonic ... | 02/27/2007 |
| 7162045 | Sound processing method and apparatus A sound processing method and apparatus are provided, which are capable of performing sound processing on input audio signals containing a plurality of signal components being different in desired sound processing conditions, in a manner that allows natural sound to... | 01/09/2007 |
| 7161635 | Video signal processing A method of de-interlacing a video signal by conducting three linear filtering operations on the input to produce three filtered signals, each linear filtering operation comprising the taking of a weighted sum of pixels; and multiplying together the three filtered s... | 01/09/2007 |
| 7155017 | System and method for controlling audio signals for playback An apparatus and method for controlling a plurality of speakers, comprising an amplifier for amplifying and outputting a play signal to be played over the speakers; and at least one sensor disposed proximal to at least one of the speakers for sensing at least one en... | 12/26/2006 |
| 7155022 | Electromagnetic feedback reduction in communication device The invention relates to a method for reducing feedback caused by electromagnetic interference between an induction coil and an output transducer, a voltage supply or an amplifier or a combination thereof, the method comprising: producing by means of a filter an equ... | 12/26/2006 |
| 7151836 | Speaker apparatus and sound reproduction apparatus A speaker apparatus includes a speaker unit, a passive radiator unit, and a front baffle on which the speaker unit and the passive radiator unit are mounted to form a portion of a speaker box and a back plate. A closed front chamber is formed by the front baffle for... | 12/19/2006 |
| 7139394 | Leak-tolerant handsfree telephone To amplify low frequencies emitted in handsfree mode by a multifunction earpiece (earpiece, loudspeaker, buzzer) of a telephone handset, the earpiece being tolerant to leaks in a discreet mode of operation, a tube projects into a cavity in the casing of the handset,... | 11/21/2006 |
| 7136495 | Loudspeaker device A loudspeaker device comprising a power amplifier (13) to which an input signal is delivered via a subtracter (6), a speaker unit (1) for reproducing output signals delivered from the power amplifier (13), an acoustic pipe (2) coup... | 11/14/2006 |
| 7123736 | Double-resonator micro-speaker assemblies and methods for tuning the same Micro-speaker assemblies and mobile terminals including micro-speaker assemblies are provided. The micro-speaker assemblies include a micro-speaker positioned in a housing. A first forward tuning volume is positioned adjacent a front face of the micro-speaker. A pas... | 10/17/2006 |
| 7113603 | Thermal overload and resonant motion control for an audio speaker A thermal overload and resonant motion control circuit is provided for an audio speaker, the circuit generating a feedback signal to control the input applied to the speaker, which feedback signal is dependent on both the drive current to the speaker and the speaker... | 09/26/2006 |
| 7113607 | Low frequency feedback controlled audio system The present invention provides a feedback-controlled audio system. A single internal pressure-sensitive detector is used as the sensor. The primary radiator is mounted facing inward to minimize acoustical delay from the speaker. The present invention also provides a... | 09/26/2006 |
| 7110555 | Sound signal reproducing apparatus A sound signal reproducing apparatus for supplying sound signals of a plurality of channels to speakers via sound amplifier circuits includes: a power supply voltage controller for controlling a power supply voltage to the sound amplifier circuits; a plurality of fi... | 09/19/2006 |
| 7099481 | Method and system for automatically detecting and powering PC speakers A method of powering an audio output device of a computer system, by determining whether a passive or active audio output device is connected to an audio output jack of the computer system and, based on this determination, providing an appropriate power level to the... | 08/29/2006 |
| 7092533 | BTL amplifier apparatus A BTL amplifying apparatus has two power amplifiers in an BTL configuration for amplifying a speaker. It includes detection means for detecting a differential voltage between outputs from the two power amplifiers while an input signal to be supplied to the power amp... | 08/15/2006 |
| 7092535 | Environment adaptable loudspeaker It is known to make the performance of a loudspeaker “environment adaptive” in controlling a filter unit based on a measurement of the velocity/acceleration of the loudspeaker diaphragm and the associated sound pressure in front of the diaphragm, by means of an ... | 08/15/2006 |
| 7092536 | System for transducer compensation based on ambient conditions A system for transducer compensation based on ambient conditions includes a transducer, a signal processor and an ambient condition sensor. The signal processor may process audio signals for the transducer. In addition, the signal processor may receive signals from ... | 08/15/2006 |
| 7088833 | Multiple-speaker The invention relates to a loudspeaker combination comprised of at least two loudspeakers, of which one is preceded by a low-pass frequency filter, the other by a phase shifter in the form of an all-pass filter. The invention addresses the problem of providing with ... | 08/08/2006 |
