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Data Processing: Speech Signal Processing, Linguistics, Language Translation, And Audio Compression/decompression > Speech Signal Processing > For Storage Or Transmission > Frequency FrequencyFrequency 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 - 20060271354 - Audio codec post-filter Techniques and tools are described for processing reconstructed audio signals. For example, a reconstructed audio signal is filtered in the time domain using filter coefficients that are calculated, at least in part, in the frequency domain. As another example, producing a set of filter coefficients for filtering a reconstructed audio ... 11/23/06 - 20060265210 - Constructing broad-band acoustic signals from lower-band acoustic signals A method generates envelope spectra and harmonic spectra from an input broad-band training acoustic signal. Corresponding non-negative envelope bases are trained for the envelope spectra and non-negative harmonic bases are trained for the harmonic spectra using convolutive non-negative matrix factorization. Higher-band frequencies are generated for an input lower-band acoustic signal ... 09/28/06 - 20060217968 - Noise-robust feature extraction using multi-layer principal component analysis Extracting features from signals for use in classification, retrieval, or identification of data represented by those signals uses a “Distortion Discriminant Analysis” (DDA) of a set of training signals to define parameters of a signal feature extractor. The signal feature extractor takes signals having one or more dimensions with a ... 08/10/06 - 20060178872 - Method and apparatus for recovering line spectrum pair parameter and speech decoding apparatus using same A method and an apparatus for recovering a line spectrum pair (LSP) parameter of a spectrum region when frame loss occurs during speech decoding and a speech decoding apparatus adopting the same are provided. The method of recovering an LSP parameter in speech decoding includes: if it is determined that ... 08/10/06 - 20060178871 - Training wideband acoustic models in the cepstral domain using mixed-bandwidth training data for speech recognition A method and apparatus are provided that use narrowband data and wideband data to train a wideband acoustic model. ... 08/10/06 - 20060178870 - Processing of multi-channel signals A method of generating a monaural signal (S) comprising a combination of at least two input audio channels (L, R) is disclosed. Corresponding frequency components from respective frequency spectrum representations for each audio channel (L(k), R(k)) are summed (46) to provide a set of summed frequency components (S(k)) for each ... 07/27/06 - 20060167681 - Diagnosis device and diagnosis method The present invention provides a diagnostic device that presents, to a patient, a Noise-Vocoded Speech Sound signal that is obtained by dividing at least one portion of a sound signal into a single or a plurality of frequency band signals and subjecting the frequency band signals to noise, and analyzing ... 07/06/06 - 20060149533 - Methods and apparatus for identifying media objects A method, apparatus and computer memory are provided for generating an audio fingerprint of an audio recording. A memory stores stable frequency family data corresponding to a plurality of stable frequency families. A processor curve fits audio recording data to at least one of the stable frequency families, extracts at ... 06/29/06 - 20060143001 - Method for the adaptation of comfort noise generation parameters In order to adapt comfort noise generation (CNG) parameters CNP, which are provided for generating a background noise signal in a telecommunications system 1 consisting of a packet-oriented telecommunications network 4 and at least a first and second communications device 2,3 connected thereto, firstly the CNG parameters CNP are generated ... 06/29/06 - 20060143000 - Voice analysis/synthesis apparatus and program An FFT unit performs an FFT process on high-frequency-eliminated, pitch-shifted voice data for one frame. A time scaling unit calculates a frequency amplitude, a phase, a phase difference between the present and immediately preceding frames, and an unwrapped version of the phase difference for each channel from which the frequency ... 06/29/06 - 20060142999 - Band correcting apparatus A voice band correcting apparatus in which the signal level of limit bands is amplified by a correction filter, the signal level of a correction signal supplied is compared by a level detector to a preset level, and the result of decision is sent as level information to a coefficient ... 06/08/06 - 20060122827 - Modeling linear and non-linear system response to a pulse train The response of linear and non-linear systems to an arbitrary pulse train is modeled for efficient and accurate circuit simulation. First, a harmonic balance analysis is performed for a system incorporating linear and non-linear components. Then, the even and odd frequency components of the harmonic balance result are separated and ... 06/08/06 - 20060122826 - Device and method for reducing stuttering The present invention is directed to a wearable stutter reducing device incorporating novel methods that make extensive use of digital signal processing (DSP) technology. The wearable stutter reducing device of the present invention has an audio signal receiver for receiving speech signals corresponding to a wearer's voice. An input conversion ... 05/11/06 - 20060100861 - Signal filtering A method of filtering an information signal (x(t)), the method comprising modifying frequency domain components (X(k,n)) of the information signal according to a desired filter response (F(k,n)); wherein the step of modifying frequency domain components further comprises modifying (105) frequency domain components of a first frame of said information signal ... 01/12/06 - 20060009968 - Unified treatment of resolved and unresolved harmonics One embodiment of the present invention provides a post-processing method of a modulation envelope resulting from an interference of two harmonics in a filter band. According to one embodiment, the method comprising filtering the modulation envelope with a band-pass filter bank, wherein a combination of demodulation and application of the ... 12/29/05 - 20050288921 - Sound effect applying apparatus and sound effect applying program In a sound effect applying apparatus, an input part frequency-analyzes an input signal of sound or voice for detecting a plurality of local peaks of harmonics contained in the input signal. A subharmonics provision part adds a spectrum component of subharmonics between the detected local peaks so as to provide ... 12/22/05 - 20050283360 - Method and apparatus for nonlinear frequency analysis of structured signals The present invention relates to systems and methods for processing acoustic signals, such as music and speech. The method involves nonlinear frequency analysis of an incoming acoustic signal. In one aspect, a network of nonlinear oscillators, each with a distinct frequency, is applied to process the signal. The frequency, amplitude, ... 12/08/05 - 20050273320 - Wideband signal analyzing apparatus, wideband period jitter analyzing apparatus, and wideband skew analyzing apparatus A wideband signal analyzing apparatus for analyzing an input signal includes frequency-shifting means for generating a plurality of intermediate frequency signals by shifting a frequency of the input signal as much as respectively different frequency-shifting amounts, so that if a frequency band of the input signal is divided into a ... 12/01/05 - 20050267739 - Neuroevolution based artificial bandwidth expansion of telephone band speech Artificial bandwidth expansion devices, systems, methods and computer code products are disclosed for expanding a narrowband speech signal into an artificially expanded wideband speech signal. Embodiments of the invention can operate by forming an unshaped wideband signal based on the narrowband speech signal, such as through aliasing, and shaping the ... 11/24/05 - 20050261894 - Method and apparatus for noise filtering Disclosed is an apparatus for and a method of filtering noise from a mixed sound signal to obtained a filtered target signal, comprising the steps of inputting (100) the mixed signal through a pair of microphones (10) into a first channel (15a) and a second channel (15b), separately Fourier transforming ... 11/03/05 - 20050246164 - Coding of audio signals An encoder comprises an input for inputting frames of an audio signal in a frequency band, an analysis filter dividing the frequency band into lower and higher frequency bands, a first encoding block for encoding the audio signals of the lower frequency band, a second encoding block for encoding the ... 10/13/05 - 20050228650 - Signal processing method and module A signal processing method is provided for processing a plurality of input frequency domain data within a frequency band, each of the input frequency domain data having magnitude and phase characteristics and being associated with a phase parameter that corresponds to the phase characteristic thereof. The method includes: arranging the ... 10/13/05 - 20050228649 - Method and apparatus for classifying sound signals The invention concerns a method for assigning at least one sound class to a sound signal, characterized in that it comprises the following steps: dividing the sound signal into temporal segments having a specific duration, extracting the frequency parameters of the sound signal in each of the temporal segments, by ... 10/13/05 - 20050228648 - Method and device for obtaining parameters for parametric speech coding of frames The invention provides a novel method for ensuring the phase continuity in transitions from a frame coded by a waveform matching coder to a frame coded using a parametric speech coder in hybrid speech coders. In the proposed method, a phase estimate is derived for the end of the frame ... 10/13/05 - 20050228647 - Method and system for controlling potentially harmful signals in a signal arranged to convey speech A method and system for controlling potentially harmful signals in a signal arranged to convey speech is described. The method includes the steps of establishing characteristics of the signal when it is conveying speech; monitoring the signal; and controlling the signal relative to the established characteristics. ... 09/29/05 - 20050216259 - Filter set for frequency analysis A system and method are disclosed for analyzing an input signal into a plurality of frequency components. In one embodiment, the input signal is processed with a first set of low pass filters to derive a first set of frequency components wherein the first set of low pass filters are ... 09/29/05 - 20050216258 - Sound collecting mehtod and sound collection device Upon detecting an utterance period by a state decision part 14, a sound source position detecting part 15 detects the positions of sound sources 91 to 9K are detected by a sound source position detecting part 15, then covariance matrix of acquired signals are calculated by a covariance matrix calculating ... 09/22/05 - 20050209847 - System and method for time domain audio speed up, while maintaining pitch A system and method for speeding up an audio signal while maintaining the same pitch as the original audio signal. The speeding up being done by a decoder. The method involves skipping frames of the decoded signal at a rate corresponding to the desired fast playback speed, and windowing the ... 09/22/05 - 20050209846 - System and method for frequency domain audio speed up or slow down, while maintaining pitch Presented herein are system(s) and method(s) for frequency domain audio speed up or slow down, while maintaining pitch. An encoded audio signal is received. Frames from the encoded audio signal are retrieved. The frames of the audio signal are transformed into a frequency domain, wherein each of said frames are ... 08/11/05 - 20050177361 - Multi-band spectral audio encoding An encoder includes a sampler that samples an audio signal and that generates from the samples a plurality of short blocks of sampled audio. Each of the short blocks has a duration less than a minimum audibly perceivable signal delay. A processor combines the plurality of short blocks into a ... 07/21/05 - 20050159941 - Method and apparatus for audio compression A method and apparatus for audio compression receives an audio signal. Transform coding is applied to the audio signal to generate a sequence of transform frequency coefficients. The sequence of transform frequency coefficients is partitioned into a plurality of non-uniform width frequency ranges and then zero value frequency coefficients are ... 06/30/05 - 20050143977 - Quality assessment tool This invention relates to a new parameter suitable for use in non-intrusive speech quality assessment system. The invention provides a method of generating a parameter from a signal comprising a sequence of values measured from voiced portions of said signal at a sampling frequency, said parameter suitable for use in ... 06/23/05 - 20050137861 - Methods and systems for synchronizing visualizations with audio streams Methods and systems are described that assist media players in rendering visualizations and synchronizing those visualizations with audio samples. In one embodiment, a system comprises one or more audio sources configured to provide audio samples that are to be rendered by a media player. An audio sample pre-processor is communicatively ... 06/23/05 - 20050137860 - Apparatus and method for controlling frequency band considering individual auditory characteristic in a mobile communication system Disclosed is a method for compensating for a specific frequency band taking an individual auditory characteristic into consideration. The method comprises receiving a signal for selecting a mode for shifting a frequency of a received voice signal to an audible frequency; and applying a control signal to a compensation filter ... 06/23/05 - 20050137859 - Sound characteristic measuring device, automatic sound field correcting device, sound characteristic measuring method and automatic sound field correcting method In order to measure a sound characteristic in a sound space, measurement sound is outputted to the sound space. Measurement sound data of a predetermined time period, which is prepared in advance, is divided into plural block periods, and plural block sound data are generated. A reproduction process of reproducing ... 06/23/05 - 20050137858 - Speech coding The invention relates to a method for use in parametric speech coding. In order to enable an improved parametric coding of speech signals, the method comprises a first step of pre-processing a to be encoded speech based signal such that a phase structure of the to be encoded speech based ... 06/16/05 - 20050131680 - Speech synthesis using complex spectral modeling A method for processing a speech signal includes dividing the speech signal into a succession of frames, identifying one or more of the frames as click frames, and extracting phase information from the click frames. The speech signal is encoded using the phase information. Methods are also provided for modeling ... 06/16/05 - 20050131679 - Method for synthesizing speech The present invention relates to a method for analyzing speech, the method comprising the steps of: a) inputting a speech signal, b) obtaining the first harmonic of the speech signal, c) determining the phase-difference Df between the speech signal and the first harmonic. ... 06/02/05 - 20050119879 - Method and apparatus to compensate for imperfections in sound field using peak and dip frequencies A method and apparatus to compensate for imperfections in a sound field includes determining a frequency-response characteristic of a test signal, extracting a difference spectrum by filtering the frequency-response characteristic on different octave band scales, detecting frequency parameters of peak and dip components that deviate from a critical value in ... ### FreshPatents.com Support |