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Patent Searching and Data


Matches 851 - 900 out of 13,092

Document Document Title
WO/2000/025304A1
A perceptual weighting device for producing a perceptually weighted signal in response to a wideband signal comprises a signal preemphasis filter, a synthesis filter claculator, and a perceptual weighting filter. The signal preemphasis f...  
WO/2000/025298A1
An improved pitch search method and device for digitally encoding a wideband signal, in particular but not exclusively a speech signal, in view of transmitting, or storing, and synthesizing this wideband sound signal. The new method and ...  
WO/2000/025305A1
In a method and device for recovering the high frequency content of a wideband signal previously down-sampled during encoding, and for injecting, during decoding, this high frequency content in an over-sampled synthesized version of the ...  
WO/2000/025303A1
The present invention relates to a method and device for enhancing periodicity of an excitation signal produced in relation to a pitch codevector and an innovative codevector for supplying a signal synthesis filter in view of producing a...  
WO/2000/024118A1
Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtere...  
WO/2000/024122A1
A multichannel polyphase filter (304, 602) includes a processing system (204, 506) for accepting and processing M input channels of data, each sampled at an input sampling rate, wherein M is a positive integer greater than unity. The pro...  
WO/2000/024125A1
The present invention relates generally to the problem of filtering, decimation or interpolation and frequency conversion in the digital domain, and more particularly to the use of the stand-alone or improved modified fast convolution al...  
WO/2000/022729A1
The invention relates to area efficient realization of coefficient block [A] or architecture [A] with hardware sharing techniques and optimizations applied to this block. The block [A] is connected to coefficient lines CLin_0, CLin_1.......  
WO/2000/022728A1
The invention relates to area efficient realization of coefficient block [A] or architecture [A] with hardware sharing techniques and optimizations applied to this block. The block [A] is connected to coefficient lines CLin_0, CLin_1...C...  
WO/2000/019654A1
The present invention seeks to enhance the modified fast convolution algorithm in order to increase the flexibility of the algorithm. In an exemplary embodiment of the present invention, a folding unit is introduced as a pre-processing s...  
WO/2000/019675A1
The invention relates to a digital receiver for a signal generated with discrete multi-tone modulation, having an analog-digital converter to which the signal generated with discrete multi-tone modulation is fed, in addition to a time do...  
WO/2000/013359A1
A transmitter generates a synchronization pattern comprising a sequence generated by arranging a predetermined basic pattern made up of a combination of a predetermined number of symbols and an inversion basic pattern made up of symbols ...  
WO2000002315A3
According to the invention: a) coefficients h1(n) of a prototype of the selective filter having a characteristic frequency fc for a given sampling frequency fa are predetermined or calculated; b) coefficients h2(t) of a selective filter ...  
WO/2000/009596A1
A method for producing a coated polymeric article by co-extruding polypropylene and a maleic anhydride modified polypropylene, corona-treating, and applying a polysilicate barrier is described. Also provided are films and bottles produce...  
WO/2000/008836A1
The invention concerns a device for processing digital data comprising a module (M2, M3) producing on a data vector of the frequency domain Z(k), wherein k varies from 0 to N-1, a convolution with a function U, convolution which correspo...  
WO/2000/008756A1
Digital filtering is performed by receiving an L-bit block of 1-bit data samples, wherein L is greater than 1, and using the L-bit block of 1-bit data samples to select a corresponding one of 2?L¿ filter ouptut values. Selection may be ...  
WO/2000/007298A1
The invention concerns a method for producing a Nyquist digital filter with null interference between symbols, designed to process a physical signal transmitted between a transmitter and a receiver via a transmission channel, said filter...  
WO1999056427A3
A sample rate converter for converting the sampling frequency of an input signal from a first frequency to a second frequency. Such a sample rate converter uses interpolation means and a phase locked loop receiving the first and the seco...  
WO/2000/002315A2
According to the invention: a) coefficients h1(n) of a prototype of the selective filter having a characteristic frequency fc for a given sampling frequency fa are predetermined or calculated; b) coefficients h2(t) of a selective filter ...  
WO/2000/002311A1
The invention relates to a non recursive digital filter whose coefficients can be modified for adapting the frequency response from a characteristic frequency fc1 to another characteristic frequency fc2. It also relates to a method for c...  
WO/1999/066424A1
A data interpolation method capable of reducing an operation volume without the occurrence of a truncation error. Each of four step function generators (10-1 to 10-4) generates a preset step function. Multipliers (12-1 to 12-4) each mult...  
WO1999044286A3
A digital filter (1) has a filter cell (4a) for generating processed data. The digital filter cell includes plurality of coefficient registers (14) which are arranged to circulate a plurality of coefficient values that correspond to a pl...  
WO/1999/060940A1
An interpolator (40) having a linear response has a first stage implemented with an IIR filter (42) to achieve the narrow transition bandwidth with relatively few filter coefficients. Zero-stuffing and filtering are used to achieve the i...  
WO/1999/060701A1
Method and device for filtering a digital signal with the aid of an Mth order finite impulse response filtering with a fractional delay d which is a fraction of the sampling period associated with the digital signal, in order to obtain a...  
WO/1999/056427A2
A sample rate converter for converting the sampling frequency of an input signal from a first frequency to a second frequency. Such a sample rate converter uses interpolation means and a phase locked loop receiving the first and the seco...  
WO/1999/054997A1
The invention relates to a method for converting the scanning rate during the transfer of a scanned signal from a first system (SYS 1) with a first scanning rate (f1) to a second system (SYS 2) with a second scanning rate (f2). According...  
WO/1999/054996A1
A digital filter includes a plurality of filter cells, each of which includes circuitry to determine a coefficient for the filter cell, to adjust the coefficient in accordance with a gain that is used by each of the plurality of filter c...  
WO/1999/050758A1
A decimation filtering circuit (300) for performing a decimation operation with a decimation factor of M in a pipeline structure. A finite impulse response ('FIR') filtering of N taps for achieving a desired frequency response is designe...  
WO/1999/050960A1
An improved method and apparatus for audio filtering is disclosed. The method provides a means for complex filtering of audio signals using a transversal filter structure (5) in which the delayed signals are successively filtered to allo...  
WO/1999/049574A1
A method of processing a series of input audio signals representing a series of virtual audio sound sources placed at predetermined positions around a listener to produce a reduced set of audio output signals for playback over speaker de...  
WO1999038257A3
A decimating time discrete filter comprises transform means (2) for transforming a real valued input signal (i) into a complex signal (u) represented by its real part Re{u} and its imaginary part Im{u}. The output signal (u) is down samp...  
WO1999039440A3
The device for processing a digital signal comprises an input (10) for receiving the digital signal and an output (18) for supplying an output signal. The device further comprises filter means (14) coupled to the output (18) for deriving...  
WO/1999/045644A1
The present invention relates to nonlinear systems and methods of design thereof in the frequency domain. Typically, conventional linear filter design involves attenuating signals at frequencies which are not of interest and dissipating ...  
WO/1999/045651A1
The invention relates to a device for signal processing in time discrete values for signal scanning systems such as digital analog converters, switched capacitor filters, direct digital synthesizers, sample and hold circuits and the like...  
WO/1999/045645A1
In digital video, 3:4 up conversion and 4:3 down conversion are transparently cascaded. The up conversion filter is: S¿up?(n)=$g(S)S¿input?(k) . g(3n - 4k) and the down conversion filter is: S¿down?(n)=$g(S)S¿up?(k) . h(4n - 3k). The...  
WO/1999/044286A2
A digital filter (1) has a filter cell (4a) for generating processed data. The digital filter cell includes plurality of coefficient registers (14) which are arranged to circulate a plurality of coefficient values that correspond to a pl...  
WO1999027522A3
In an audio processing arrangement (2) input signals from a plurality of input sources (4, 6) are weighted by weighting factors x and y using weighting elements (10, 12). The weighted input signals are combined to a combined signal by an...  
WO/1999/039440A2
The device for processing a digital signal comprises an input (10) for receiving the digital signal and an output (18) for supplying an output signal. The device further comprises filter means (14) coupled to the output (18) for deriving...  
WO/1999/038155A1
The invention relates to the coding of speech at a variable bit rate, whereby the bit rates can vary from frame to frame, and more specifically to the methods and filters used for improving the quality of the decoded speech. In the solut...  
WO1999022451A3
The invention makes it possible to combine a scaleable audio coder with TNS technology. According to the inventive method for encoding time signals (x1) sampled in a first sampling rate, second time signals (x2) with a sampling rate smal...  
WO/1999/038257A2
A decimating time discrete filter comprises transform means (2) for transforming a real valued input signal (i) into a complex signal (u) represented by its real part Re{u} and its imaginary part Im{u}. The output signal (u) is down samp...  
WO/1999/035009A1
A vehicle computer system has an audio entertainment system implemented in a logic unit and audio digital signal processor (DSP) independent from the host CPU. The audio entertainment system employs a set of ping/pong buffers and direct ...  
WO/1999/034519A1
A decimation filtering apparatus using interpolated second order polynomials compensates for a droop caused by a CIC (Cascaded Integrator-Comb) filter (51). The decimation filter includes a CIC decimation filter (51) for decimation filte...  
WO/1999/033175A1
A number of consecutive samples in unit distance code (here Gray code) are effectively stacked and supplied to respective sum and threshold devices (20) corresponding to each bit position, to determine the bulk property or 'generic resul...  
WO/1999/033234A1
Group delay equalizer (6) including at least two transmission lines (5, 5') on which the signal to be equalized in digital form and the same signal, 90° phase shifted, are respectively transmitted, in which one or more real filtering ce...  
WO/1999/030413A1
A polyphase quadrature digital tuner system which converts input signals to baseband inphase and quadrature signal components. The system includes a signal receiver which receives the input signals having a frequency centered around a pr...  
WO/1999/027522A2
In an audio processing arrangement (2) input signals from a plurality of input sources (4, 6) are weighted by weighting factors x and y using weighting elements (10, 12). The weighted input signals are combined to a combined signal by an...  
WO1999009695A3
The invention concerns a method for eliminating interference in a bipolar signal on important line lengths. The signal is routed into a corrector for coarse tuning and fine tuning, and up o a level detector (12) mounted downstream and is...  
WO/1999/023758A1
A processor (30) and integrated filter and detection process (20) having reduced signal processing requirements. The integrated filter and detection process and processor has a first pass filter (12a) that filters input data comprising a...  
WO/1999/022451A2
The invention makes it possible to combine a scaleable audio coder with TNS technology. According to the inventive method for encoding time signals (x¿1?) sampled in a first sampling rate, second time signals (x¿2?) with a sampling rat...  

Matches 851 - 900 out of 13,092