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Data Processing: Speech Signal Processing, Linguistics, Language Translation, And Audio Compression/decompression > Speech Signal Processing > For Storage Or Transmission > Noise NoiseNoise patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/30/06 - 20060271360 - Estimating the noise components of a signal during periods of speech activity Enhanced estimation of the noise component of a signal is accomplished by using a plurality of filters. Each filter provides an estimate of a minimum sample in a sample set that includes a plurality of signal samples. A comparator, coupled to the plurality of filters, successively compares the estimates among ... 11/30/06 - 20060271359 - Robust decoder Techniques and tools related to delayed or lost coded audio information are described. For example, a concealment technique for one or more missing frames is selected based on one or more factors that include a classification of each of one or more available frames near the one or more missing ... 11/23/06 - 20060265215 - Signal processing system for tonal noise robustness A processing system generates an output signal which includes desired signal components, and reduces or eliminates tonal noise. The output signal may be provided to any subsequent signal processing system, including voice recognition systems, pitch detectors, and other processing systems. The subsequent processing systems are less likely to mistake tonal ... 10/12/06 - 20060229869 - Method of and apparatus for reducing acoustic noise in wireless and landline based telephony Acoustic noise for wireless or landline telephony is reduced using frequency domain of optimal filtering in which each frequency band of every time frame is filtered as a function of the estimated signal-two-noise ratio and the estimated total noise energy for the frame. Non-speech, non-speech frames and other special frames ... 09/14/06 - 20060206322 - Method of noise reduction based on dynamic aspects of speech A system and method are provided that reduce noise in pattern recognition signals. To do this, embodiments of the present invention utilize a prior model of dynamic aspects of clean speech together with one or both of a prior model of static aspects of clean speech, and an acoustic model ... 09/14/06 - 20060206321 - Noise reduction using correction vectors based on dynamic aspects of speech and noise normalization A method and apparatus are provided for reducing noise in a signal. Under one aspect of the invention, a correction vector is selected based on a noisy feature vector that represents a noisy signal. The selected correction vector incorporates dynamic aspects of pattern signals. The selected correction vector is then ... 09/14/06 - 20060206320 - Apparatus and method for noise reduction and speech enhancement with microphones and loudspeakers The present invention helps to reduce the noise level and to enhance the quality of speech signals, in communications, computers, entertainment and other applications, where microphones and loudspeakers are involved. Additionally, the invention includes a new noise reduction and speech enhancement algorithm which is created based on the principles of ... 09/07/06 - 20060200344 - Audio spectral noise reduction method and apparatus A method of reducing noise in an audio signal, comprising the steps of: using a furrow filter to select spectral components that are narrow in frequency but relatively broad in time; using a bar filter to select spectral components that are broad in frequency but relatively narrow in time; analyzing ... 07/06/06 - 20060149541 - System and method for implementing real-time adaptive threshold triggering in acoustic detection systems A system and method to generate a trigger signal based on a real-time adaptive threshold. The system may include a microphone to receive an audio signal, a device to generate a trigger signal based on a real-time adaptive threshold coupled to the microphone to form an adaptive threshold and generate ... 06/22/06 - 20060136203 - Noise reduction device, program and method A noise reduction device is configured by use of: means for calculating a predetermined constant, and a predetermined reference signal Rω(T) in the frequency domain, respectively by use of adaptive coefficients Wω(m), and for thereby obtaining estimated values Nω and Qω(T) respectively of stationary noise components, and non-stationary noise components ... 06/15/06 - 20060129391 - Channel normalization apparatus and method for robust speech recognition A channel normalization apparatus includes: a characteristic extraction unit extracting MFCC characteristics and outputting rows of frames according to time; a characteristic parameter average calculation unit calculating an average value of the rows of the outputted MFCC characteristics; a channel variation estimation unit configuring a codebook based on a database ... 06/01/06 - 20060116873 - Repetitive transient noise removal A system improves the perceptual quality of a speech signal by dampening undesired repetitive transient noises. The system includes a repetitive transient noise detector adapted to detect repetitive transient noise in a received signal. The received signal may include a harmonic and a noise spectrum. The system further includes a ... 05/25/06 - 20060111900 - Speech distinction method A speech distinction method, which includes dividing an input voice signal into a plurality of frames, obtaining parameters from the divided frames, modeling a probability density function of a feature vector in state j for each frame using the obtained parameters, and obtaining a probability P0 that a corresponding frame ... 05/18/06 - 20060106601 - Noise elimination method, apparatus and medium thereof A noise elimination method and apparatus. The method eliminates noise from an input signal containing a voice signal mixed with a noise signal. The method includes detecting a noise section, in which the noise signal is present, from the input signal; obtaining a weight to be used for the input ... 05/11/06 - 20060100868 - Minimization of transient noises in a voice signal A voice enhancement system is provided for improving the perceptual quality of a processed voice signal. The system improves the perceptual quality of a received voice signal by removing unwanted noise from a voice signal recorded by a microphone or from some other source. Specifically, the system removes sounds that ... 05/11/06 - 20060100867 - Method and apparatus to eliminate noise from multi-channel audio signals A method and apparatus to eliminate noise from a plurality of channel audio signals in which surrounding noise is mixed. The method includes detecting an existence of noise in frame units by averaging a plurality of channel input signals and estimating a noise signal of a noise-detected frame, and subtracting ... 05/11/06 - 20060100866 - Influencing automatic speech recognition signal-to-noise levels A system for influencing a signal-to-noise ratio (SNR) associated with a signal input to an automatic speech recognition device is provided. The system includes a normalized energy module that determines a normalized energy measurement based upon a spectrum of frequency-domain complex coefficients, the coefficients generated by the automatic speech recognition ... 04/13/06 - 20060080092 - Telecommunication device and method A method is disclosed to assist users of telecommunication equipment to improve the likelihood that the party receives and comprehends their speech. The method involves quantifying the quality of speech at both the point of reception and transmission, and then communicating this information to the transmitter who is speaking. To ... 04/06/06 - 20060074648 - Method for the compression of recordings of ambient noise, method for the detection of program elements therein, and device therefor The amount of data produced in the process of recording even short hearing samples by means of a monitor (1) may be considerably reduced by effecting a normalization to a range of values D and a subsequent nonlinear mapping to a second, preferably smaller range of values W. The result ... 04/06/06 - 20060074647 - Device for recording air-conditioning variables A device for recording air-conditioning variables in a room (R) of a building comprises a basic device (1) and an auxiliary device (2), arranged at a distance (L) from said basic device. Sound waves (A1) emitted by the basic device are detected by the auxiliary device (2). The point in ... 04/06/06 - 20060074646 - Method of cascading noise reduction algorithms to avoid speech distortion A method of reducing noise by cascading a plurality of noise reduction algorithms is provided. A sequence of noise reduction algorithms are applied to the noisy signal. The noise reduction algorithms are cascaded together, with the final noise reduction algorithm in the sequence providing the system output signal. The sequence ... 04/06/06 - 20060074645 - System and methods for vehicle sound font creation, playback, and networking Systems and methods provide for the creation of vehicle sound fonts, for utilizing the vehicle sound fonts to augment the engine sounds of a vehicle, and for establishing a network for sharing and controlling the playback of vehicle sound fonts and other media. The systems install in automobiles and play ... 03/09/06 - 20060053005 - Detecting events of interest using quantum resonance interferometry Incoming data from, for example, an array of detectors, may be received. A dynamical system may be initialized corresponding to a modality of the incoming data so that a measurement probe based on the initialized dynamical system may be generated. Such a measurement probe may be injected into a quantum ... 03/02/06 - 20060047507 - Device and method for noise suppression An analog signal is sampled to provide a digitized signal and the resultant digitized signal is output to a delay element, which provides a delayed digital signal. The analog signal is also input to an analog noise detector, which provides a noise detector output signal to a digital logic unit. ... 02/23/06 - 20060041426 - Noise detection for audio encoding The techniques described are utilized for detection of noise and noise-like segments in audio coding. The techniques can include performing a prediction gain calculation, an energy compaction calculation, and a mean and variation energy calculation. Signal adaptive noise decisions can be made both in time and frequency dimensions. The techniques ... 02/09/06 - 20060031067 - Sound input device A sound input device has: a start-of-a-learning-operation determining unit configured to determine a time when a filter is started to be learned, the filter being for removing noise from sound signals detected in a car compartment while leaving object signals; and a frequency band determining unit configured to determine a ... 02/09/06 - 20060031066 - Isolating speech signals utilizing neural networks A speech signal isolation system configured to isolate and reconstruct a speech signal transmitted in an environment in which frequency components of the speech signal are masked by background noise. The speech signal isolation system obtains a noisy speech signal from an audio source. The noisy speech signal may then ... 02/02/06 - 20060025992 - Apparatus and method of eliminating noise from a recording device A noise elimination apparatus and method of eliminating noise content from a signal including the noise content and audio content input to a recording device, such as a camcorder. The method includes determining whether a noise frame exists by variably setting one or more thresholds independently in zones in which ... 01/26/06 - 20060020452 - Noise generation apparatus A noise generator includes a noise intensity storage means for storing a noise intensity threshold of a noise, a noise intensity setting means for setting an optimum noise intensity based on the noise intensity threshold, a noise generation means for generating the noise based on the optimum noise intensity, and ... 01/26/06 - 20060020451 - Method and apparatus for equalizing a speech signal generated within a pressurized air delivery system A method for equalizing a speech signal generated within a pressurized air delivery system, the method including the steps of: generating an inhalation noise model (1152) based on inhalation noise; receiving an input signal (802) that includes a speech signal; and equalizing the speech signal (1156) based on the noise ... 01/12/06 - 20060009969 - Auto-adjusting sound masking system and method A system and method for generating a masking noise level and spectrum automatically adjusted to obtain a target masking noise spectrum in a room. The system comprises a white noise generator and a mask filter automatically determined according to a correction of an acoustical response of the room and to ... 12/29/05 - 20050288925 - Checking of a bit flow A method and a circuit for detecting a possible loss of the equiprobable character of a first output bit flow originating from at least one first normalization element of an initial bit flow, consisting of submitting the initial flow to at least one second normalization element of a nature different ... 12/29/05 - 20050288924 - Checking of the skew constancy of a bit flow A method and a circuit for detecting a possible loss in the equiprobable character of a first output bit flow originating from at least one first element of normalization of an initial bit flow, consisting of analyzing the flow rate of the normalization element. ... 12/29/05 - 20050288923 - Speech enhancement by noise masking The invention provides a method and apparatus for noise reduction of a signal, for example speech enhancement of a speech signal. The method involves a two-stage algorithm comprising performing a preprocessing first spectral subtraction to remove tonal noise and generate a tonal noise removed signal, and performing a second spectral ... 12/08/05 - 20050273325 - Removing noise from feature vectors A method and computer-readable medium are provided for identifying clean signal feature vectors from noisy signal feature vectors. Aspects of the invention use mixtures of distributions of noise feature vectors and/or channel distortion feature vectors when identifying the clean signal feature vectors. ... 12/08/05 - 20050273324 - System for providing audio data and providing method thereof Disclosed is a system and method for providing audio data. The present system is connected to a user terminal over a network for providing audio data to the user terminal, and includes a condition setting unit and an audio data processor. When audio data provision conditions including conditions regarding virtual ... 12/01/05 - 20050267746 - Method for interoperation between adaptive multi-rate wideband (amr-wb) and multi-mode variable bit-rate wideband (vmr-wb) codecs A source-controlled Variable bit-rate Multi-mode WideBand (VMR-WB) codec, having a mode of operation that is interoperable with the Adaptive Multi-Rate wideband (AMR-WB) codec, the codec comprising: at least one Interoperable full-rate (I-FR) mode, having a first bit allocation structure based on one of a AMR-WB codec coding types; and at ... 12/01/05 - 20050267745 - System and method for babble noise detection A method, device, system, and computer program product calculate a gradient index as a sum of magnitudes of gradients of speech signals from a received frame at each change of direction; and provide an indication that the frame contains babble noise if the gradient index, energy information, and background noise ... 11/17/05 - 20050256706 - Removing noise from feature vectors A method and computer-readable medium are provided for identifying clean signal feature vectors from noisy signal feature vectors. One aspect of the invention includes using an iterative approach to identify the clean signal feature vector. Another aspect of the invention includes using the variance of a set of noise feature ... 11/17/05 - 20050256705 - Noise spectrum estimation method and apparatus A method is provided for recurrently estimating a spectrum of noise at each signal observation interval from a sound signal which contains the noise and which is observed at each signal observation interval. In the method, there are acquired an envelope of a previous spectrum of the noise which has ... 11/10/05 - 20050251389 - Method and apparatus for noise reduction An apparatus and method for noise reduction is described. The method and apparatus can be used in a hands-free communication system to provide a hands-free a communication system having improved intelligibility. The apparatus includes a first and a second processor, each separately dynamically adapted to changing signals and noise, to ... 11/10/05 - 20050251388 - Spectrogram reconstruction by means of a codebook A method for reconstructing a data spectrogram disturbed by noise and/or echo is described, wherein spectrogram data is subjected to an awarding of a reliability measure, and wherein the spectrogram data having a low reliability measure is replace by more reliable data. In particular the replacement is carried out by ... 11/03/05 - 20050246170 - Audio signal processing apparatus and method An audio signal processing apparatus (1) comprises an audio input (3) for an entered audio signal, an audio output (5) for outputting an outgoing audio signal, and a processor (9) for performing a transformation (2) to improve the intelligibility of speech present in the entered audio signal. The transformation (2) ... 10/27/05 - 20050240401 - Noise suppression based on bark band weiner filtering and modified doblinger noise estimate In a noise suppresser, an input signal is converted to frequency domain by discrete Fourier analysis and divided into Bark bands. Noise is estimated for each band. The circuit for estimating noise includes a smoothing filter having a slower time constant for updating the noise estimate during noise than during ... 10/20/05 - 20050234715 - 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 to remove noise from the audio ... 10/13/05 - 20050228660 - Delay free noise suppression An apparatus, a circuit and a method are given, to realize very effective noise suppression for speech signals. Using thereby novel calculation methods allow for a real-time operation without any remarkable delay. Also a significant reduction of the overall processing power demands in conjunction with reduced memory requirements is achieved. ... 10/13/05 - 20050228659 - Stealth communication method In accordance with the present invention, there is provided a stealth communication method for transmitting a proprietary message using an information-bearing noise having an internal structure associated with the message. The spectral properties of the information-bearing noise are indistinguishable from those of the noise in the communication channel. This information-bearing ... 09/15/05 - 20050203736 - Excitation vector generator, speech coder and speech decoder A noise canceller removes a noise component from an input speech signal. The noise canceller includes a noise cancellation coefficient adjuster that adjusts a noise cancellation coefficient to determine an amount of noise cancellation. A noise spectrum storage device stores an estimated noise spectrum. A noise estimator estimates a noise ... 09/15/05 - 20050203735 - Signal noise reduction Provision to reduce production of musical noise. A noise reduction device includes: means for calculating a rank for each element included in a first region having predetermined sizes in the time axis direction and in the frequency axis direction, depending on a value of the element, in a noise section ... 08/25/05 - 20050187763 - Dynamic tuning of hands-free algorithm for noise and driving conditions A method of tuning a hands-free system in a mobile vehicle, the method including receiving a plurality of vehicle condition inputs, creating a noise parameter based on the vehicle condition inputs and adjusting a noise suppression algorithm of the hands-free system based on the created noise parameter. ... 08/11/05 - 20050177366 - Noise adaptive mobile communication device, and call sound synthesizing method using the same A noise adaptive mobile communication device including a noise collecting microphone which collects noise from a peripheral environment; a noise sensing unit which senses the collected noise; a frequency-component detecting unit which detects a frequency component of the sensed noise; a sound generating unit which generates a noise-adaptive sound from ... 08/11/05 - 20050177365 - Transmitter-receiver A noise suppressor suppresses noise contained in speech converted by an A/D converter into a digital signal. A sidetone level controller controls a level of a speech signal with the noise suppressed by the noise suppressor, for output as a sidetone. A D/A converter then converts a speech receiving signal ... 07/21/05 - 20050159945 - Noise cancellation system, speech recognition system, and car navigation system A noise cancellation system with improved performance for canceling from an input signal of a microphone a noise component relating to reproduced sound of an audio system reproducing multiple channels of sound, provided with an audio canceller for acquiring audio signals of two channels and processing them by filter coefficients ... 07/07/05 - 20050149325 - Method of noise reduction using correction and scaling vectors with partitioning of the acoustic space in the domain of noisy speech A method and apparatus are provided for reducing noise in a training signal and/or test signal. The noise reduction technique uses a stereo signal formed of two channel signals, each channel containing the same pattern signal. One of the channel signals is “clean” and the other includes additive noise. Using ... 06/30/05 - 20050143989 - Method and device for speech enhancement in the presence of background noise In one aspect thereof the invention provides a method for noise suppression of a speech signal that includes, for a speech signal having a frequency domain representation dividable into a plurality of frequency bins, determining a value of a scaling gain for at least some of said frequency bins and ... 06/30/05 - 20050143988 - Noise reduction apparatus and noise reducing method A noise reduction apparatus includes an analysis unit for converting input into a signal of a frequency area, a suppression unit for suppressing the signal, and a synthesis unit for synthesizing a signal of a time area. The apparatus further includes an estimation unit for estimating, using the output of ... ### FreshPatents.com Support |