Bizarre Patents
A helium-filled sun shade for protecting individuals engaged in outdoor activities.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8126154 | Circuit arrangement for the bidirectional operation of sound transducers disposed at the ends of a measuring section A sensor circuit for a flow sensor comprises terminating impedances connected in parallel to the sound transducers and has a signal generator, which is configured as a power source. The circuit arrangement is suitable particularly for the operation of an airflow sen... | 02/28/2012 |
| 8019088 | Low-frequency range extension and protection system for loudspeakers Low-frequency bandwidth extension in the form of dynamic electrical equalization may be applied to loudspeakers so long as the excursion capability of their drive units as well as velocity limits of any port(s) or excursion limits of any associated passive radiator(... | 09/13/2011 |
| 8005230 | Method and system for digitally controlling a multi-channel audio amplifier Audio signals are processed in a manner that facilitates control for overpower conditions. According to an example embodiment of the present invention, an audio processing circuit is configured and arranged for controlling an output audio signal as a function of an ... | 08/23/2011 |
| 7848527 | Dynamic power management in a portable media delivery system A consumer electronic product (e.g., a portable media player ported to a media delivery accessory) is powered by a limited capacity DC power source (such as a battery or mini-fuel cell). The consumer electronic product limits the maximum allowable sound pressure lev... | 12/07/2010 |
| 7706545 | Systems and methods for protection of audio amplifier circuits Systems and methods for providing protection from failure events in a digital audio amplification system. One embodiment of the invention comprises a system having a digital amplifier controller, an amplifier output stage coupled to the controller and configured to ... | 04/27/2010 |
| 7672463 | Apparatus to control temperature of audio amp A temperature control apparatus used with an audio amp to prevent the audio amp from overheating and noise from being generated by effectively controlling a cooling fan of the audio amp includes a power supply to supply an electrical power, a power amp to amplify an... | 03/02/2010 |
| 7672462 | Method and system for acoustic shock protection An acoustic shock protection method and device are provided. A pattern analysis-based approach is taken to an input signal to perform feature extraction. A parameter space is identified, which is corresponding to the signal space of the input signal. A rule-based de... | 03/02/2010 |
| 7664273 | Approach for controlling audio signals in remote location An example embodiment is directed to use in a facility benefiting from the distribution of audio throughout different facility zones (“audio zones”), with each audio zone receiving an audio signal from a remotely-located audio distribution controller. For contro... | 02/16/2010 |
| 7502478 | Stereo audio headset interface and method that is compatible with mono headsets A stereo headset interface that is compatible with mono for an audio playback device. A load in series between an audio output from a stereo headset driver and a ground of a mono headset plug prevents the audio output from being grounded when a mono headset plug is ... | 03/10/2009 |
| 7447318 | System for using digital signal processing to compensate for power compression of loudspeakers This invention provides a compensation system capable of compensating for power loss due to the power compression effects of the voice coil as the temperature of the voice coil increases. To compensate for the power compression effect, the invention predicts or esti... | 11/04/2008 |
| 7443990 | Voltage biased capacitor circuit for a loudspeaker A voltage biased capacitor circuit (10) for a loudspeaker (14′) includes at least two audio circuit capacitors (32A, 32B) wired in series either on one of an audio connector or between audio connectors (16A′, 16B′). A ... | 10/28/2008 |
| 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 |
| 7388962 | Directional hearing enhancement systems A hearing enhancement system that enhances a user's hearing based on a directional speaker is disclosed. In one embodiment, the system can include an interface unit that has a directional speaker and a microphone. The microphone captures input audio signals that are... | 06/17/2008 |
| 7372966 | System for limiting loudspeaker displacement Loudspeakers can be damaged by high drive signals. One reason for this damage is an excess vibration displacement of the coil-diaphragm assembly. This invention describes a novel method for limiting this displacement by a signal processor. In the present invention, ... | 05/13/2008 |
| 7367886 | Gaming system with surround sound An electronic gaming system comprises a gaming terminal and a speaker arrangement. The gaming terminal conducts a wagering game. The speaker arrangement emits audio associated with the wagering game in surround sound relative to a player in front of the gaming termi... | 05/06/2008 |
| 7364508 | Gaming machine environment having controlled audio and visual media presentation A gaming machine system comprises a game cabinet, a processor, and an audio/visual effects system. The game cabinet receives inputs and displays outputs. The processor is located within the cabinet and randomly selects a game outcome in response to a wager. The proc... | 04/29/2008 |
| 7362871 | Audio amplifier circuit and audio IC having the same In the present invention, in parallel with a resistor which determines an amplification rate being fed back from an output to an input of an output stage OP amp in an audio amplifier circuit, providing a first diodes connected bi-directionally together with a first ... | 04/22/2008 |
| 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 |
| 7352871 | Apparatus for communication and reconnaissance coupled with protection of the auditory system A method and apparatus are disclosed for listening to ambient sounds, engage in face-to-face communication, listen to and transmit voice communications, while also protecting the auditory system from hazardous sound pressure levels. Increased gain permits the user t... | 04/01/2008 |
| 7298852 | Dynamic power sharing in a multi-channel sound system A signal processing system for use in a multichannel audio system. The signal processing system includes a first channel having a first audio signal. A second channel is included that has at least a second audio signal. A processor is included that is responsive to ... | 11/20/2007 |
| 7288991 | Power control circuit for accurate control of power amplifier output power According to an exemplary embodiment, an amplification module includes a power control circuit. The amplification module further includes a power amplifier coupled to the power control circuit and configured to draw a supply current and receive a supply voltage from... | 10/30/2007 |
| 7274793 | Excursion limiter An excursion limiter (10) broadly comprises a voltage controlled filter (40) to suppress an audio signal according to a selected threshold at a selected frequency using a control voltage. The voltage controlled filter (40) preferably produces an... | 09/25/2007 |
| 7272233 | Acoustic shock prevention Acoustic shock is reduced by attenuating an input signal based on tones detected through frequency domain analysis. The spectrum of the input signal is obtained. A relative energy signal includes a plurality of relative energy elements, each representing the relativ... | 09/18/2007 |
| 7272232 | System and method for prioritizing and balancing simultaneous audio outputs in a handheld device A system and method for prioritizing multiple audio sources and balancing them in a single combined output in a handheld device. Audio sources are sensed and combined with the level of each source subject to adjustment by an attenuator/amplifier. A priority logic un... | 09/18/2007 |
| 7242783 | Audio limiting circuit An audio limiting circuit capable of satisfying frequency dependent limits and time domain constraints, is disclosed. In one illustrative embodiment, an input node receives an unattenuated input signal and a system modeling filter predicts the amount, if any, by whi... | 07/10/2007 |
| 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 |
| 7139403 | Hearing aid with digital compression recapture Systems, devices, and methods are provided to inhibit apparent amplitude modulation in non-linear processing that causes distortion in a processed signal. One aspect of the invention includes a hearing aid. The hearing aid includes a microphone to receive an input s... | 11/21/2006 |
| 7123673 | System and method for transmission of digital information of varying sample rates over a synchronous network A system for transmitting digital information over a synchronous network includes at least one source node and at least one sink node both coupled with the synchronous network. The source node provides source information sampled at a source sample rate (Fsi) to the ... | 10/17/2006 |
| 7120256 | Audio testing system and method A method is provided for increasing the quality of audio reproduction of a binaural rendering in a passenger environment having a number of seats, each seat having an audio system including a headphone jack for interconnection with a headphone device. The method com... | 10/10/2006 |
| 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 |
| 7112139 | Gaming machine with ambient noise attenuation A gaming machine in a gaming establishment enhances its game sounds by attenuating ambient noise in the establishment. The gaming machine includes a microphone, processing circuitry, and an audio speaker. The microphone detects ambient noise and generates a noise si... | 09/26/2006 |
| 7110839 | Audio system for minimizing the chance that high power audio signals may be directed to a headphone jack This invention provides a speaker system that minimizes the number of wires used to provide power and audio signal to all of the speakers. This is accomplished by without generating interference noises from shared signal wire implementations. The invention also prov... | 09/19/2006 |
| 7106880 | Universal ribbon element-module for two or more membrane-widths with optimized flow and drive A loudspeaker module in the form of a ribbon element, where the module can be equipped with a membrane, 50 millimeters in width or narrower, and with any length from 50 millimeters to 2500 millimeters. The magnet system is equipped with so called booster-magnets in ... | 09/12/2006 |
| 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 |
| 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 |
| 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 |
| 7072477 | Method and apparatus for automatically normalizing a perceived volume level in a digitally encoded file Automatically normalizing a perceived loudness for a digitally encoded audio track formed of a number of channels during playback on a multimedia asset player is described. A number of auditory selectivity frequency bands are selected and for each channel in the tra... | 07/04/2006 |
| 7038356 | Mechanical-to-acoustical transformer and multi-media flat film speaker A mechanical-to-acoustical transducer has at least one actuator, preferably a piezo motor, that is coupled, generally perpendicularly, to one edge of a diaphragm formed from a thin, flexible sheet material. The diaphragm is fixed at a point spaced from the actuator ... | 05/02/2006 |
| 7013011 | Audio limiting circuit An audio limiting circuit capable of satisfying frequency dependent limits and time domain constraints, is disclosed. In one illustrative embodiment, an input node receives an unattenuated input signal and a system modeling filter predicts the amount, if any, by whi... | 03/14/2006 |
| 7006637 | Integrated self diagnostics for loudspeaker systems A self-diagnostic circuit for speaker systems that allows a speaker system to generate its own test signals, e.g., tones, appropriate for the transducer(s) in the speaker system. The test signals are routed to the analog circuits in the speaker system. The test sign... | 02/28/2006 |
