Document 
Document Title 
WO/2004/098065A1 
The invention is directed to a biquad filter circuit (100) configured with sigmadelta devices (108, 110, 118) that operate as binary rate multipliers (BRMs) (200). Unlike conventional biquad filter circuits (100), the invention provid...

WO/2004/098054A1 
A digital filter configuration for the filtration of a digital video signal, wherein the functions of a zoom filter, in the form of a lowpass filter, which is a polyphase filter, and of at least one peaking filter, in the form of a high...

WO/2004/097794A2 
A synthesizer for generating a decorrelation signal using an input signal is operative on a plurality of subband signals, wherein a subband signal includes a sequence of at least two subband samples, the sequence of the subband samples r...

WO/2004/094965A2 
A noise shaping system including an inner loop and outer noise shaping loops. The inner noise shaping loop includes an inner loop filter and a quantizer for quantizing an output of the inner loop filter. The outer noise shaping loop incl...

WO/2004/095346A1 
A programmable filter may implement an infinite impulse response filter so that a transceiver in which the filter is utilized may be programmable to operate in one or more modes in accordance with one or more communication standarts. The...

WO/2004/095722A2 
A system and method are disclosed for processing a signal propagated through a nonlinear channel. The method includes modeling the channel characteristics to produce a linearized channel model, deriving an inverse linearized channel mode...

WO/2004/093316A2 
An adaptive filtering device and method where at least one adaptive filter receives an input signal and a metering device receives an output of the at least one adaptive filter, monitors a characteristic of the output, such as power of h...

WO/2004/088842A2 
A FIR filter includes an input pipeline IP with a sequence of input delay cells DI;, each for storing an input sample, and a plurality of N input tap points TP;. An output pipeline includes a sequence of output delay cells DO;, each for ...

WO/2004/088841A2 
Sample rate converters (12) for converting input sample rates (F81) of signals into output sample rates (Fs4) are provided with sample rate adapters (3,6) for adapting (basic idea) intermediate sample rates (Fs2) such that output sample ...

WO/2004/088642A2 
A signal processor (100) has a plurality of channels, each channel configured to receive an input signal stream (S1˜S8), to reduce the signal to a direct current signal and to process the signal according to the stream signal. Each chan...

WO/2004/086616A2 
Systems and methods for detecting clipping conditions in an audio signal and processing the signal to reduce the clipping conditions. In one embodiment, a system comprises a noise shaper, a modulator, an output stage and other components...

WO/2004/086792A1 
The system and method for estimating impulse response of a wideband communication channel represented as linear combination of L timeshifted pulsed P1 (t) with propagation coefficients a1, comprising functionalities or steps for obtaini...

WO/2004/086611A2 
Systems and methods for converting a digital input data stream from a first sample rate to a second, fixed sample rate using a combination of hardware and software components. In one embodiment, a system includes a rate estimator configu...

WO/2004/086614A1 
Systems and methods for synchronizing multiple digital audio controller chips, wherein one of the chips is designated as a master (210) and the other chips are designated as slaves (220). A common line (23a) connects all of the chips and...

WO/2004/086609A1 
Systems and methods for providing protection from failure events in a digital audio amplification system. One embodiment of the invention comprises a system having a digital amplifier controller, an amplifier output stage (160) coupled t...

WO2004055983A8 
The present invention relates to a converter converting an input digital signal into an output digital signal. Said converter comprises in particular a set of shift registers able to contain samples of the input or output digital signal....

WO/2004/079905A1 
A numerical string consisting of a ratio of “1, m, 1” or “1, m, 1” is subjected to a predetermined moving average calculation n times. A numerical string thus obtained is used as a filter coefficient of a basic filter and at le...

WO/2004/079901A2 
The invention concerns a digital filter. The filter comprises at least a first and a second 5 delayed summation line, whereby one of the delay lines comprise a warped filter FIR filter and the other line is a FIR filter, whereby: at leas...

WO/2004/077408A1 
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 decisio...

WO/2004/077670A1 
A system and method are disclosed for a nonlinear filter having a nonlinear transfer function. The nonlinear filter comprises a plurality of linear filters (202, 204) each having a filter output, a plurality of nonlinear elements (208, 2...

WO2004008502A3 
An RF generator is provided for use in an RF plasma system. The RF generator includes: a power source that is operable to generate RF power signals at a tuned frequency; a sensor unit that is adapted to detect the RF power signals and op...

WO/2004/066501A2 
A digital compression system including a superresonant filter, which adds samples of a digital data signal at a frequency to previous samples. The added samples are parts of sine or cosine waves, not the sum of the waves. The output sign...

WO/2004/063835A2 
In a Digital Pressure Derivative Technique (DPDT) which uses convolution, an input signal including noise is convolved with a wavelet to produce an output signal which is a derivative of the input signal and which is substantially devoid...

WO/2004/064261A2 
Methods and systems for filtering an analog signal sampled at a very high frequency and outputting a digital signal that has a very low sampling frequency to drive a material metering machine. The high frequency digital input signal is i...

WO/2004/057759A1 
A method, filter and a video coder filtering a signal is described. The filter (92) comprises a first set of multipliers (102, 104, 106) filtering samples of the signal with a first phase of filter coefficients (C2, C4, C6), first summin...

WO2004023781A3 
A channelized filter design for partial band reconstruction having high dynamic range requirements. The analysis filter (505) and synthesis filter constraints of the present invention permit high performance signal detection with an alia...

WO/2004/055983A1 
The present invention relates to a converter converting an input digital signal into an output digital signal. Said converter comprises in particular a set of shift registers able to contain samples of the input or output digital signal....

WO/2004/054103A1 
A multirate filter according to the invention comprises, a) an input unit (10) for receiving an input signal (Sin) and for providing a plurality of intermediate signals (IS1, IS2) in response to said input signal, b) a filter unit (20) c...

WO/2004/051648A1 
There are provided an adaptive equalization circuit and an adaptive equalization method capable of performing a preferable signal processing of high calculation accuracy with a small size and improving the reproduction signal quality and...

WO2004013964A3 
A sample rate conversion system developed to implement a rate change of M7N using a very efficient design implementation. The sample rate conversion system of the present invention is implemented as a CICbased interpolating sample rate ...

WO2003063346A3 
The invention relates to a method of decreasing the dynamic range of a signal comprising the steps of: determining a property of the signal, determining a limitation parameter based on the property of the signal,  limiting the signal ...

WO2003069499A9 
A system and method are disclosed for analyzing an input signal (100) into a plurality of frequency components. In one embodiment, the input signal (100) is processed with a first set of low pass filters (102132) to derive a first set o...

WO2004013963A3 
The invention relates to a data processing system for performing a polyphase filtering. This circuit comprises functional units (304, 305, 306) able to perform polyphase filterings, and a memory device (301, 302, 308) for storing data an...

WO2004027998A3 
The present invention proposes a new method for improving the performance of a realvalued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as...

WO/2004/045095A1 
In order to protect against adjacent channel interference and the effects of weak signal in AM signal processing, pre and post AM demodulation filters (36 and 38) may be used where the bandwidth of both is varied in the same manner by ...

WO2004034664A3 
Apparatus, methods and articles of manufacture are disclosed for modifying electromagnetic waves by reducing noise in those waves. A transfer function for a plurality of segments is derived through identifying a desired output parameter....

WO/2004/042553A1 
The invention is directed to a digital signal processing method and system for digitally processing a discretized input signal (12) provided in form of a plurality of discrete input signal values at corresponding discrete input time ins...

WO/2004/040770A1 
An audio signal reproduction device includes: a sevendimensional deltasigma modulation circuit for receiving a PCM signal and deltasigma modulating the PCM signal; a PWM circuit for pulsewidth modulating the signal output from the se...

WO/2004/040757A1 
In a method for determining filter coefficients of a digital filter, particularly in UMTS, the predetermined filter coefficients bv are divided by a same scaling factor s and then quantized in that counted from the most significant bit o...

WO/2004/038600A1 
A reconfigurable filter node including an input data memory adapted to store a plurality of input data values, a filter coefficient memory adapted to store a plurality of filter coefficient values, and a plurality of computational units ...

WO2003107533A3 
Disclosed is a method for digitally filtering K input values by means of a nonlinear filter, wherein the filter produces an output value, the R biggest value, from the K input values (K >= R >= 1). The inventive method can be used to pr...

WO/2004/036747A1 
A symmetric unit filter (L10”) is designed by combining in series two unit filters (1L10, 2L10) having asymmetric numerical sequences as filter coefficients (H1 to H3 and H4 to H6). Thus, by designing a filter by series connection, it ...

WO/2004/036746A1 
A digital filter is designed by combining unit filters (L10’, H10’) having a predetermined asymmetric numerical sequence as filter coefficients (H1 to H3). Thus, it is possible to automatically obtain a desired digital filter coeffic...

WO/2004/036450A1 
The computer executes a first operation by a first recurrence formula, receiving a filter order (positive integer) of a universal maximally flat FIR filter, the number of zeros at z=1 (integer equal to or more than zero), and a paramete...

WO2003063350A3 
The invention relates to a digital signal filtering method, a frequency synthesiser and the corresponding computer programs. More specifically, the invention relates to a method of filtering an original digital signal which is represente...

WO/2004/034664A2 
Apparatus, methods and articles of manufacture are disclosed for modifying electromagnetic waves by reducing noise in those waves. A transfer function for a plurality of segments is derived through identifying a desired output parameter....

WO/2004/034624A2 
A digital group delay compensation system comprising a digital allpass filter that is utilized in an implementation phase; and a system that generates coefficients for the allpass filter used in the implementation phase such that the ove...

WO/2004/034607A1 
A wraparound canceller capable of performing adaptive operation to follow a wraparound wave, a parent station wave phase, and temporal level fluctuation at a high speed and with a high accuracy as well as reducing the device size. By lim...

WO/2004/029825A1 
The invention relates to a method for reconstruction of original signals from relative measurements. According to the invention, the amplitude distortion in a measuring system is exactly compensated by a compensation filter, whereby the ...

WO/2004/027998A2 
The present invention proposes a new method for improving the performance of a realvalued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as...
