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Digital filter capable of configuring coefficient and implementation method

A technology of digital filters and filter coefficients, used in digital technology networks, impedance networks, electrical components, etc.

Active Publication Date: 2015-07-08
OLINKSTAR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this filter implementation is that the filter coefficients are selected according to the filtering requirements, so a large number of filter coefficients must be stored in memory

Method used

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  • Digital filter capable of configuring coefficient and implementation method
  • Digital filter capable of configuring coefficient and implementation method
  • Digital filter capable of configuring coefficient and implementation method

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Embodiment Construction

[0038] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] Such as image 3 Shown is a general structural diagram of a digital filter with configurable coefficients provided by the present invention. A digital filter with configurable coefficients, including a fitting factor memory, a coefficient calculation module and a digital filter, the fitting factor memory is connected to the coefficient calculation module, and the coefficient calculation module is connected to the digital filter; the fitting factor memory is used to store the The fitting algorithm fits the filter coefficients to the fitting factor; the coefficient calculation module is used to read the corresponding fitting factor in the fitting factor memory according to the input control information and calculate the required filter coefficient; the digital filter The input digital signal is filtered by using the filter coefficient cal...

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Abstract

The invention discloses a digital filter capable of configuring a coefficient and an implementation method. A fitting factor which is obtained by fitting a filter coefficient according to a certain algorithm is stored in a memory, and a great quantity of storage spaces for storing the filter coefficient are saved under the condition of ensuring the filtering accuracy. The digital filter capable of configuring the coefficient comprises a fitting factor memory, a coefficient calculation module and the digital filter; the digital filter is connected to the fitting factor memory through the coefficient calculation module; the fitting factor memory is used for storing the fitting factor for fitting the filter coefficient through a fitting algorithm; the coefficient calculation module is used for reading corresponding fitting factor in the fitting factor memory to calculate and obtain the required filter coefficient according to the input control information, and digital filter uses the filter coefficient calculated by the coefficient calculation module to filter the input digital signal.

Description

technical field [0001] The invention relates to the field of digital signal processing, in particular to a digital filter with configurable coefficients and a realization method. Background technique [0002] The digital filter acts on the discrete-time system, and can use the system characteristics to process the waveform or spectrum of the input signal, turn the input signal into a certain output signal, and achieve the purpose of changing the spectrum of the signal. The digital filter has high precision, strong reliability, flexible and convenient use, and is an important means in digital signal processing technology. [0003] figure 1 The general structure of general digital filter is given. An input signal input(k) at a certain discrete time passes through a digital filter with a certain system function H(z), and then outputs a signal output(k) with a desired frequency spectrum. In order to obtain the output signal output(k) of the desired spectrum, the system functi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H17/02
Inventor 不公告发明人
Owner OLINKSTAR CORP
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