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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Application No. | Application Title | Issue Date |
| 20120128168 | METHOD AND APPARATUS FOR NOISE AND ECHO CANCELLATION FOR TWO MICROPHONE SYSTEM SUBJECT TO CROSS-TALK A method and apparatus for joint noise and echo cancellation of a two microphone system subject to cross-talk. The method includes estimating the reference output by removing the cross-talk and the estimated echo from the reference channel, when an echo is detected in t... | 05/24/2012 |
| 20120106749 | Microphone Non-Uniformity Compensation System A microphone compensation system responds to changes in the characteristics of individual microphones in an array of microphones. The microphone compensation system provides a communication system with consistent performance despite microphone aging, widely varying envi... | 05/03/2012 |
| 20120045070 | ACTIVE NOISE CONTROL DEVICE The active noise control device includes: a signal obtaining section that obtains an electric signal relating to the predetermined sound; a control section that adjusts an amplitude and a phase of the electric signal obtained by the signal obtaining section; a vibrating... | 02/23/2012 |
| 20120045069 | Dynamic Audibility Enhancement A method of enhancing an audio signal includes the steps of: a) receiving a primary audio input signal, b) receiving a detected audio signal which comprises: A) an echo component derived from play-out of the primary audio input signal and B) a noise component, and c) es... | 02/23/2012 |
| 20120027218 | Multi-Microphone Robust Noise Suppression A robust noise reduction system may concurrently reduce noise and echo components in an acoustic signal while limiting the level of speech distortion. The system may receive acoustic signals from two or more microphones in a close-talk, hand-held or other configuration.... | 02/02/2012 |
| 20110311064 | SYSTEM AND METHOD FOR STEREOPHONIC ACOUSTIC ECHO CANCELLATION Disclosed herein are systems, methods, and non-transitory computer-readable storage media for stereophonic acoustic echo cancellation. The method includes collecting, at a same time, a first audio sample of an audio source from a first omnidirectional microphone and a s... | 12/22/2011 |
| 20110311066 | Echo Cancellers and Echo Cancelling Methods Methods and systems for updating the adaptive filter of an echo canceller. A method of updating the adaptive filter of an echo canceller in which an estimated echo is resolved from a received signal and then subtracted from an incoming echo-contaminated signal so as to ... | 12/22/2011 |
| 20110293104 | AUDIO COMMUNICATION DEVICE AND METHOD USING FIXED ECHO CANCELLATION FILTER COEFFICIENTS Methods, apparatuses, systems, and software are disclosed for providing a phone or other audio communication device with a fixed-path acoustic echo cancellation feature that compensates for a fixed-path acoustic coupling caused by transmission of sound from one or more ... | 12/01/2011 |
| 20110268287 | LOUDSPEAKER SYSTEM AND SOUND EMISSION AND COLLECTION METHOD A loudspeaker system with a high degree of versatility, which, even when a microphone or a person speaking moves, can adequately response to the movement is provided. A plurality of linkage terminals 2 are connected to a central control device 1. A lecture... | 11/03/2011 |
| 20110255703 | DETERMINING AN ACOUSTIC COUPLING BETWEEN A FAR-END TALKER SIGNAL AND A COMBINED SIGNAL The present invention provides an improved determination of an acoustic coupling between a loudspeaker (110) and a microphone (120), which results in a better estimate of the acoustic coupling during double talk. This is achieved in a device (100) f... | 10/20/2011 |
| 20110255702 | SIGNAL DEREVERBERATION USING ENVIRONMENT INFORMATION An audio processing system includes an audio processing device and an external device, the audio processing device having a signal processing unit adapted for running an algorithm for processing an input signal representing an acoustic signal from the environment of the... | 10/20/2011 |
| 20110218711 | INFOTAINMENT SYSTEM CONTROL An embodiment an infotainment system for an automobile includes a navigation system, an entertainment system, an audio output device and a control system coupled to the navigation system, the entertainment system and the audio output device. The control system controls ... | 09/08/2011 |
| 20110211706 | SOUND EMISSION AND COLLECTION DEVICE AND SOUND EMISSION AND COLLECTION METHOD Provided is a sound emission and collection device capable of estimating the azimuth of a sound source (such as a main utterer) precisely without any processing load. The sound emission and collection device (1) is connected with another sound emission and collec... | 09/01/2011 |
| 20110206212 | Microphone System and Method of Operating the Same A microphone system is provided, wherein the microphone system comprises a microphone array comprising a plurality of microphone units each adapted to generate a primary signal indicative of an acoustic wave received from the respective microphone unit, a first echo can... | 08/25/2011 |
| 20110176688 | SIGNAL PROCESSING METHOD, SIGNAL PROCESSING DEVICE, AND SIGNAL PROCESSING PROGRAM Provided is a signal processing method which receives a plurality of reception signals and subtracts pseudo-echoes generated by a plurality of adaptive filters which input the reception signals, from a plurality of echoes generated by the reception signals, thereby redu... | 07/21/2011 |
| 20110176687 | APPARATUS AND ASSOCIATED METHODOLOGY FOR SUPPRESSING AN ACOUSTIC ECHO A new acoustic echo suppressor and method for acoustic echo suppression is described herein. Exemplary embodiments of the acoustic echo suppressor use one linear regression model for each subband. The linear regression model for each subband may operate on the squared m... | 07/21/2011 |
| 20110158418 | DEREVERBERATION AND NOISE REDUCTION METHOD FOR MICROPHONE ARRAY AND APPARATUS USING THE SAME A dereverberation and noise reduction method adapted for a microphone array and an apparatus using the same are proposed. The microphone array receives a plurality of audio signals from an audio source. The dereverberation and noise reduction method includes the followi... | 06/30/2011 |
| 20110150248 | AUTOMATIC ENVIRONMENTAL ACOUSTICS IDENTIFICATION A headphone system includes sound processor which calculates properties of the environment from signals from an internal microphone and an external microphone. The impulse response of the environment may be calculated from the signals received from the internal and exte... | 06/23/2011 |
| 20110135105 | ECHO CANCELLER An adaptive filter unit 103 outputs a send-mid signal obtained by eliminating echo from a send-in signal, and a power comparing unit 107 calculates a power ratio between received signal power and send-mid signal power. When a receiver ST detecting unit ... | 06/09/2011 |
| 20110129096 | METHOD AND SYSTEM FOR REDUCING ACOUSTICAL REVERBERATIONS IN AN AT LEAST PARTIALLY ENCLOSED SPACE A method of increasing the intelligibility of an audio broadcast in an at least partially enclosed space from at least one amplified audio source. An input microphone receives an incident audio wavefront at a first position in the at least partially enclosed space. An a... | 06/02/2011 |
| 20110116644 | SIMULATED BACKGROUND NOISE ENABLED ECHO CANCELLER An apparatus may include a noise estimation unit configured to determine a noise spectrum associated with a noise signal, and generate a filter based on the determined noise spectrum. The apparatus may also include a noise synthesis unit configured to generate a colored... | 05/19/2011 |
| 20110110526 | ACOUSTIC ECHO CANCELLER AND ACOUSTIC ECHO CANCELLATION METHOD An adaptive filter generates a pseudo echo sound signal based on a sound emission sound signal. An adder subtracts the pseudo echo sound signal from a low band component of a collected sound signal, thereby generating a sound signal with a first-adjusted low band compon... | 05/12/2011 |
| 20110099485 | ACOUSTIC ECHO CANCELLATION (AEC) WITH CONFERENCING ENVIRONMENT TEMPLATES (CETs) In at least some embodiments, a computer system includes a processor and a network interface coupled to the processor. The computer system also includes a system memory coupled to the processor, the system memory storing a communication application having a conferencing... | 04/28/2011 |
| 20110093102 | MITIGATING THE IMPACT OF NONLINEAR ECHOS BY DYNAMIC RANGE COMPRESSION Mitigation of nonlinear echoes by dynamic range compression may be provided. An audio output may be evaluated to determine whether nonlinear echoes are interfering with an audio signal. In order to reduce such nonlinear echoes, a dynamic range compression algorithm may ... | 04/21/2011 |
| 20110058676 | SYSTEMS, METHODS, APPARATUS, AND COMPUTER-READABLE MEDIA FOR DEREVERBERATION OF MULTICHANNEL SIGNAL Systems, methods, apparatus, and computer-readable media for dereverberation of a multimicrophone signal combine use of a directionally selective processing operation (e.g., beamforming) with an inverse filter trained on a separated reverberation estimate that is obtain... | 03/10/2011 |
| 20110044462 | SIGNAL ENHANCEMENT DEVICE, METHOD THEREOF, PROGRAM, AND RECORDING MEDIUM The initial values of parameter estimates are set, including reverberation parameter estimates, which includes a regression coefficient used in a linear convolutional operation for calculating an estimated value of reverberation included in an observed signal, source pa... | 02/24/2011 |
| 20110044461 | APPARATUS AND METHOD FOR COMPUTING CONTROL INFORMATION FOR AN ECHO SUPPRESSION FILTER AND APPARATUS AND METHOD FOR COMPUTING A DELAY VALUE An embodiment of an apparatus for computing control information for a suppression filter for filtering a second audio signal to suppress an echo based on a first audio signal includes a computer having a value determiner for determining at least one energy-related value... | 02/24/2011 |
| 20110019831 | Echo Suppression Method and Apparatus Thereof In an echo suppression apparatus, an adaptive filter estimates an echo path of a near end, and generates a pseudo echo signal of a reception signal received from a far end. A subtractor subtracts the pseudo echo signal from a near-end signal including an echo signal of ... | 01/27/2011 |
| 20110019832 | SOUND PROCESSOR, SOUND PROCESSING METHOD AND RECORDING MEDIUM STORING SOUND PROCESSING PROGRAM A sound processor includes a conversion unit converts a reference sound signal corresponding to a base of sound to be output and an observation sound signal based on each of sound signals output by a plurality of sound receiving units into frequency components, an echo ... | 01/27/2011 |
| 20110019833 | APPARATUS AND METHOD FOR COMPUTING FILTER COEFFICIENTS FOR ECHO SUPPRESSION A preferred embodiment of an apparatus for computing filter coefficients for an adaptive filter for filtering a microphone signal so as to suppress an echo due to a loudspeaker signal includes an extractor for extracting a stationary component signal or a non-stationary... | 01/27/2011 |
| 20110013781 | SYSTEM AND PROCESS FOR REGRESSION-BASED RESIDUAL ACOUSTIC ECHO SUPPRESSION A regression-based residual echo suppression (RES) system and process for suppressing the portion of the microphone signal corresponding to a playback of a speaker audio signal that was not suppressed by an acoustic echo canceller (AEC). In general, a prescribed regress... | 01/20/2011 |
| 20110002473 | DEREVERBERATION APPARATUS, DEREVERBERATION METHOD, DEREVERBERATION PROGRAM, AND RECORDING MEDIUM A sound source model storage section stores a sound source model that represents an audio signal emitted from a sound source in the form of a probability density function. An observation signal, which is obtained by collecting the audio signal, is converted into a plura... | 01/06/2011 |
| 20100329472 | REVERBERATION SUPPRESSING APPARATUS AND REVERBERATION SUPPRESSING METHOD A reverberation suppressing apparatus separating sound source signals based on input signals output from microphones collecting the plurality of sound source signals, includes a sound signal output unit generating sound signals and outputting the generated sound signals... | 12/30/2010 |
| 20100322387 | ENDPOINT ECHO DETECTION Architecture that employs a signal (e.g., audible or inaudible sounds) to detect if endpoints of a communications session are sufficiently close to each other to induce echo, and then control (e.g., muting) is applied to one or more of the endpoints to prevent echo. The... | 12/23/2010 |
| 20100316228 | METHODS AND SYSTEMS FOR BLIND DEREVERBERATION Various embodiments of the present invention are directed to methods for dereverberation of audio generated in a room. In one aspect, a method for dereverberating reverberant digital signals comprises transforming a reverberant digital signal from the time domain into F... | 12/16/2010 |
| 20100296663 | System and Method for the Application on an LMS Method to Updating an Echo Canceller in an ADSL Modem An echo cancellation device relies on the known characteristics of the sync frame to monitor, update in an off-line fashion and determine the accuracy of an echo canceller in, for example, a modem, such as an ADSL modem. Specifically, time domain samples are read from t... | 11/25/2010 |
| 20100278351 | Methods and systems for reducing acoustic echoes in multichannel communication systems by reducing the dimensionality of the space of impulse resopnses Various embodiments of the present invention are directed to adaptive methods for reducing acoustic echoes in multichannel audio communication systems. Acoustic echo cancellation methods determine approximate impulse responses characterizing each echo path between louds... | 11/04/2010 |
| 20100260344 | Method and Arrangement for Echo Cancellation of Voice Signals A method and arrangement for cancelling echoes in a communication terminal (400) during a voice call with an opposite party. The communication terminal (400) comprises an echo cancelling unit (416,600) adapted to produce an estimate of echo informat... | 10/14/2010 |
| 20100246844 | Method for Determining a Signal Component for Reducing Noise in an Input Signal The invention provides a method for determining a signal component for reducing noise in an input signal, which comprises a noise component, comprising the steps of: estimating the noise component in the input signal, estimating a reverberation component in the noise co... | 09/30/2010 |
| 20100232632 | HEARING ASSISTANCE DEVICES WITH ECHO CANCELLATION According to various embodiment of a method of operating a hearing instrument, an acoustic signal pathway is provided from a microphone through a signal processor to a hearing instrument (HI) receiver in an acoustic mode of operation. An RF transmit signal pathway is pr... | 09/16/2010 |
