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Recursive FFT in Python Convertible to Verilog/VHDL [Python]
This code snippet is a recursive FFT implementation in Python. This method is used to generate Verilog and VHDL with MyHDL/Python. Since the FFT is a very popular tool and there are many effici...
posted by Christopher Felton on Nov 3 2010
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Computing CIC Filter Register Pruning Using Matlab [Matlab]
The following Matlab code computes the amount register bit-pruning described in Eugene's Hogenauer's famous paper on cascaded integrator-comb (CIC) decimation filters [1]. Although there are many de... posted by Rick Lyons on Feb 15 2012
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Halfband Filter Design with Python/Scipy [Python]
The following code snippet is an example how to design a half band filter. Half band filters are interesting because every even coefficient, except 0, is 0. Those multiplications do not ne... posted by Christopher Felton on Feb 24 2012
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Fractional Delay Line implementation [C]
This is a working implementation of a fractional delay line in C. It has been tested in the dsPIC audio kit, and in a PC running GNU/Linux operating system using the Open Sound System audio driver, b... posted by Gabriel Rivas on Jan 27 2011
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Signal fitting with subsample resolution [Matlab]
Determines sub-sample delay and scaling factor between two signals and resamples / scales one signal to match the other. For example in measurement automation, it is rather common to apply a test sig... posted by Markus Nentwig on Aug 16 2011
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Fixed-point Math Library [C]
We provide a set of macros and routines that perform fixed-point arithmetic, including basic arithmetic operators, conversions between fixed-point and floating point types, sines and cosines, exponent... posted by Jordan Rhee on Nov 30 2010
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Goertzel Filterbank to the Implementation of a Nonuniform DFT [Matlab]
This is an implementation of a Nonunifor Discrete Fourier Transform through a bank of filters of Goertzel. Each goertzel filter is centered at the exactly frequencies of interest. ... posted by Miguel De Jesus on Dec 14 2010
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Circular Convolution [Matlab]
The output of convolving two finite streams builds up from zero and tails off towards zero. In some cases e.g. modelling or playing a test vector in actual hardware, this is undesirable and will lead... posted by kadhiem Ayob on Mar 3 2012
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Vector alignment for verification [Matlab]
In verification it is often useful to align the output of a module with some reference vector for comparison. This program does that automatically. It reads the two vectors, correlates them then align... posted by kadhiem Ayob on Oct 22 2011
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Narrow-band moving-average decimator, one addition/sample [Matlab]
Decimation for narrow-band signals by averaging It is usually not practical to implement filters with a bandwidth many orders of magnitude below the sampling rate. For example, an application might d... posted by Markus Nentwig on Dec 31 2011
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