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Zero Crossing Counter [Matlab]
In some DSP applications, it can be very helpful to know how many times your signal has crossed the zero-line (amplitude origin). How is this helpful? Well, zero-crossings can tell you ve...
posted by on Jul 9 2011
Comments (3) |
Equal Loudness Curves (ISO226) [Matlab]
What is loudness? No, it is not the setting of your volume knob. In audio processing, loudness refers to a family of curves that generally describes how the the human ear perceives how "lo... posted by on Jun 21 2011
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Signal fitting with subsample resolution [Matlab]
Update: The most recent version can be found here and a demonstration here.The downloadable code is a "real-life" implementation that is a good choice for "real-life problems", but has grown to almost... posted by Markus Nentwig on Aug 16 2011
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Resampling based on FFT [Matlab]
This code can be used to avoid resampling overflows in matlab, and perform approximate resampling.... posted by Vashishth Chaudhri on Dec 16 2010
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High accuracy FFT interpolation [Matlab]
The zero-padding FFT algorithm is a well-known method for applying a continuous delay to a signal. Yet it has the drawback that its accuracy is poor, since the interpolation error only decreases lin... posted by Jesus Selva on Nov 4 2010
Comments (3) |
Pink Noise Generator [Matlab]
This code snippet generates "pink" noise by generating white noise and apply filter to turn it into pink noise. See wiki article: http://en.wikipedia.org/wiki/Pink_noise In general, pink noise ... posted by on Sep 26 2011
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GSM (GMSK) power spectrum equation [Matlab]
A simple, empirical model for the power spectrum shape of a GMSK-modulated GSM signal, generated according to 3GPP TS 45.004 section 2 on a signal stream without slot structure. The picture shows t... posted by Markus Nentwig on Sep 18 2011
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A-weighting filter [Matlab]
The code below will generate coefficients for a digital A-weighting filter. What is an A-weighting filter you say? Perhaps this wikipedia article can help? http://en.wikipedia.org/wiki/A-w... posted by on Sep 25 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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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
Comments (3) |