Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 8189809 | Audio device for improved sound reproduction An audio device includes a first audio path with a loudspeaker for reproducing an audio signal, and a second audio path. The second audio path includes in series a band-pass filter for filtering an audio signal, a detector for detecting the amplitude of the band-pas... | 05/29/2012 |
| 8189810 | System for processing microphone signals to provide an output signal with reduced interference A system reduces noise or other external signals that may affect communication. A device converts sound from two or more microphones into an operational signal. Based on one or both signals, a beamformer generates an intermediate signal. Reflected or other undesired... | 05/29/2012 |
| 8180070 | Howling suppressing apparatus A howling suppressing apparatus includes: a detecting unit configured to detect howling of input audio signals; a plurality of filters configured to apply a filter process sequentially to the audio signals to be output; and a setting unit configured to set a filter ... | 05/15/2012 |
| 8180069 | Noise reduction through spatial selectivity and filtering A signal processor uses input devices to detect speech or aural signals. Through a programmable set of weights and/or time delays (or phasing) the output of the input devices may be processed to yield a combined signal. The noise contributions of some or each of the... | 05/15/2012 |
| 8160271 | Variable noise masking during periods of substantial silence Methods and systems for masking audio noise are disclosed. One apparatus includes a silence detector configured to detect a period of substantial silence in an audio signal; a masking noise source operably coupled to the silence detector, the masking noise source co... | 04/17/2012 |
| 8150064 | Audio output device and method An audio output device and method capable of preventing generation of pop noise by a relatively simple and small-sized circuit configuration and control timing. A D/A converter converts a digital audio signal to an analog audio signal. A non-inverting amplifier ampl... | 04/03/2012 |
| 8139787 | Method and device for binaural signal enhancement Various embodiments for components and associated methods that can be used in a binaural speech enhancement system are described. The components can be used, for example, as a pre-processor for a hearing instrument and provide binaural output signals based on binaur... | 03/20/2012 |
| 8139786 | Plop noise avoidance for an amplifier The invention concerns a method and signal conversion device for avoiding undesirable noise in the start up of an amplifying device, as well as to an amplifying device including such a signal conversion device. The signal conversion device (12) comprises a va... | 03/20/2012 |
| 8126160 | Use of non-audible band to relay information for echo cancellation in a distributed media system Particular embodiments provide for attenuating one or more microphone signals in a teleconferencing system upon detecting a non-audible signal. A far end voice signal is received from a sound source. A non-audible signal is added to the far end voice signal to creat... | 02/28/2012 |
| 8126159 | System and method for creating personalized sound zones Speakers deployed in a space and divided into groups associated with different zones produce a mix of sounds that create internal noise pollution and, combined with external noise, an unpleasant environment for occupants. The present invention contemplates sound sys... | 02/28/2012 |
| 8098844 | Dual-microphone spatial noise suppression Spatial noise suppression for audio signals involves generating a ratio of powers of difference and sum signals of audio signals from two microphones and then performing noise suppression processing, e.g., on the sum signal where the suppression is limited based on ... | 01/17/2012 |
| 8098845 | Low cost noise floor reduction A method and system to reduce the noise floor of a communications system is disclosed. The system may be incorporated into any device that provides binary samples from a datastream, such as a cordless telephone system. The system is configured to determine a number ... | 01/17/2012 |
| 8094835 | Signal processing apparatus A signal processing apparatus includes first and second extracting units extracting frequency components having a first frequency band and a second frequency band, respectively, from an input audio signal, a first-harmonic-component generating unit generating a firs... | 01/10/2012 |
| 8094836 | Multi-channel decoding systems capable of reducing noise and methods thereof A multi-channel decoding method includes: receiving an input signal to generate a first channel output signal and a second channel output signal, wherein the input signal is mixed with a specific clock signal; and gradually changing an amplitude of the specific cloc... | 01/10/2012 |
| 8090119 | Noise suppressing apparatus and program A noise suppressing apparatus suppresses a noise component of a sound signal which contains the noise component and a signal component. In the apparatus, a frequency analyzing section divides the sound signal into a plurality of frames such that adjacent frames over... | 01/03/2012 |
| 8085949 | Method and apparatus for canceling noise from sound input through microphone Provided is a method and apparatus for canceling noise from a sound signal input through a microphone. The method includes filtering a high-frequency signal having a frequency that is higher than a reference frequency and a low-frequency signal having a frequency th... | 12/27/2011 |
| 8085948 | Noise reduction in a system A system comprises a plurality of storage drives coupled to logic. The logic implements a noise-reducing feature selected from a group consisting of a first feature that limits system performance based on a level of ambient noise, a second feature that staggers acce... | 12/27/2011 |
| 8068620 | Audio processing apparatus A signal processing apparatus includes sound collecting elements, a noise detector for detecting a level of noise in a low-frequency band of audio signals output from the sound collecting elements, a noise reduction unit for reducing the noise in the audio signals i... | 11/29/2011 |
| 8050421 | Acoustic correction apparatus and acoustic correction method According to one embodiment, an acoustic correction apparatus includes: a signal obtaining module configured to obtain an acoustic signal from a target space including an object and an external space; a signal output module configured to output to the target space a... | 11/01/2011 |
| 8036398 | Circuit and apparatus having a delay unit for reducing periodic noise A signal processing circuit includes a delaying unit that is configured to carry out delay processing on the basis of periodicity information synchronized with the periodicity of a periodic noise included in an input signal and a filter unit that is configured to re... | 10/11/2011 |
| 8036399 | Audio output apparatus capable of suppressing pop noise An audio output apparatus includes: an audio codec outputting an analog audio signal corresponding to a digital audio signal from a system controller; a switch unit having a first end coupled to the audio codec through a capacitor, and a grounded second end; and a s... | 10/11/2011 |
| 7974419 | Pop sound prevention module and speaker apparatus thereof A pop sound prevention module and a speaker apparatus thereof are provided. The pop sound prevention module is used for preventing the speaker apparatus generating a pop sound when a power shuts down. The speaker apparatus includes an audio amplifier, an audio proce... | 07/05/2011 |
| 7881480 | System for detecting and reducing noise via a microphone array A system for detecting noise in a signal received by a microphone array and a method for detecting noise in a signal received by a microphone array is disclosed. The system also provides for the reduction of noise in a signal received by a microphone array and a met... | 02/01/2011 |
| 7848530 | Electronic device and its control method According to this invention, mechanical noise from a noise source of a pre-identified device can be removed, while tracing a change in gain of acoustic wave data, and noise is removed by tracing a change over time of the noise source. To this end, the gain of a sign... | 12/07/2010 |
| 7840014 | Sound apparatus with howling prevention function An acoustic system that eliminates the howling that occurs when the sound outputted by the speaker feeds back to the input device. The acoustic system comprises a digital signal processor (DSP) that divides the input audio signal into different frequency bands, and ... | 11/23/2010 |
| 7792314 | System and method for acquiring acoustic signals using doppler techniques A method and system enhances an acoustic signal acquired by a microphone from an acoustic source while concurrently acquiring a Doppler signal from moving parts of the acoustic source. The acoustic signal and the Doppler signal are then analyzed according to a model... | 09/07/2010 |
| 7783062 | Automatic audio distortion control method and apparatus Disclosed is an automatic audio distortion control method and apparatus, wherein the automatic audio distortion control apparatus comprises an amplifier (6) and a feedback loop which has its both ends coupled to an input and an output of the amplifier (6 | 08/24/2010 |
| 7769188 | Electronic device, video camera apparatus, and control method therefor According to this invention, if noise generated by operation of a component such as a rotary drum of a recording/playback apparatus which operates periodically enters a microphone, noise waveforms can be extracted and reduced. Data obtained from microphones (6, 7... | 08/03/2010 |
| 7706550 | Noise suppression apparatus and method A noise estimation unit estimates a noise signal in an input signal. A section decision unit distinguishes a target signal section from a noise signal section in the input signal. A noise suppression unit suppresses the noise signal based on a first suppression coef... | 04/27/2010 |
| 7697699 | Method of and apparatus for reducing noise An apparatus for reducing noise includes a comparator for generating a noise timing signal corresponding to a noise producing period of noise introduced from a noise source and contained in an audio signal, a gap time generator for generating a gap period in which t... | 04/13/2010 |
| 7657038 | Method and device for noise reduction In one aspect of the present invention, a method to reduce noise in a noisy speech signal is disclosed The method comprises: applying at least two versions of the noisy speech signal to a first filter, whereby that first filter outputs a speech reference signal and ... | 02/02/2010 |
| 7613309 | Interference suppression techniques System (10) is disclosed including an acoustic sensor array (20) coupled to processor (42). System (10) processes inputs from array (20) to extract a desired acoustic signal through the suppression of interfering signals. The extra... | 11/03/2009 |
| 7587056 | Small array microphone apparatus and noise suppression methods thereof The small array microphone apparatus comprises first and second omni-directional microphones, a microphone calibration unit and a directional microphone forming unit. The first and second omni-directional microphones respectively convert sound from a desired near-en... | 09/08/2009 |
| 7551743 | Noise reduction apparatus and audio output apparatus The FM broadcast is received and the FM demodulated FM composite signal is stereo demodulated, and when the high band components of the demodulated signal are few, the correction is conducted by using the signals just before and just after the noise generation perio... | 06/23/2009 |
| 7443989 | Adaptive beamforming method and apparatus using feedback structure An adaptive beamforming apparatus and method includes a fixed beamformer that compensates for time delays of M noise-containing speech signals input via a microphone array having M microphones (M is an integer greater than or equal to 2), and generates a sum signal ... | 10/28/2008 |
| 7436188 | System and method for improving time domain processed sensor signals Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a... | 10/14/2008 |
| 7436969 | Method and system for optimizing denoising parameters using compressibility In various embodiments of the present invention, a noisy signal denoiser is tuned and optimized by selecting denoiser parameters that provide relatively highly compressible denoiser output. When the original signal can be compared to the output of a denoiser, the de... | 10/14/2008 |
| 7433475 | Electronic device, video camera apparatus, and control method therefor According to this invention, if noise generated by operation of a component such as a rotary drum of a recording/playback apparatus which operates periodically enters a microphone, noise waveforms can be extracted and reduced. Data obtained from microphones (6, 7... | 10/07/2008 |
| 7430255 | Impulse noise suppression device Digital audio data with error detection bits added thereto is inputted to an error detecting and correcting device (4). The correcting device (4) corrects an error when the error is detected in the digital audio data. The digital audio data outputted f... | 09/30/2008 |
| 7426464 | Signal processing apparatus and method for reducing noise and interference in speech communication and speech recognition The present invention uses a method of processing signals in which signals received from an array of sensors are subject to system having a first adaptive filter arranged to enhance a target signal and a second adaptive filter arranged to suppress unwanted signals. ... | 09/16/2008 |
