PDL::FFT - FFTs for PDL River stage two • 90 direct dependents • 97 total dependents

!!!!!!!!!!!!!!!!!!!!!!!!!!WARNING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! As of PDL-2.006_04, the direction of the FFT/IFFT has been reversed to match the usage in the FFTW library and the convention in use generally. !!!!!!!!!!!!!!!!!!!!!!!!!!WARNING!!!...

ETJ/PDL-2.080 - 28 May 2022 16:44:03 UTC - Search in distribution

Math::FFT - Perl module to calculate Fast Fourier Transforms River stage one • 2 direct dependents • 3 total dependents

This module implements some algorithms for calculating Fast Fourier Transforms for one-dimensional data sets of size 2^n. The data, assumed to arise from a constant sampling rate, is represented by an array reference $data (as described in the method...

SHLOMIF/Math-FFT-1.36 - 17 Oct 2020 13:23:20 UTC - Search in distribution

Math::GSL::FFT - Fast Fourier Transforms (FFT) River stage one • 5 direct dependents • 6 total dependents

* "gsl_fft_complex_radix2_forward($data, $stride, $n) " This function computes the forward FFTs of length $n with stride $stride, on the array reference $data using an in-place radix-2 decimation-in-time algorithm. The length of the transform $n is r...

HAKONH/Math-GSL-0.43 - 26 Jul 2021 16:34:34 UTC - Search in distribution

Numeric::LL_Array - Perl extension for low level operations over numeric arrays. River stage zero No dependents

One of the principal overheads of using Perl for numeric vector calculations is the need to constantly create and destroy a large amount of Perl values (there is no such overhead in calculations over scalars, since Perl knows how to reuse implicit te...

ILYAZ/Numeric-LL_Array-0.1504 - 08 May 2010 01:07:03 UTC - Search in distribution

Audio::Data - module for representing audio data to perl River stage one • 1 direct dependent • 1 total dependent

Audio::Data represents audio data to perl in a fairly compact and efficient manner using C via XS to hold data as a C array of "float" values. The use of "float" avoids many issues with dynamic range, and typical "float" has 24-bit mantissa so quanti...

NI-S/Audio-1.029 - 02 Jun 2004 18:52:42 UTC - Search in distribution

Audio::MFCC - Perl module for computing mel-frequency cepstral coefficients River stage zero No dependents

This module provides an interface to the Sphinx feature extraction library which can be used to extract mel-frequency cepstral coefficients from data. These coefficients can then be passed to the "Speech::Recognizer::SPX::uttproc_cepdata" function. Y...

DJHD/Speech-Recognizer-SPX-0.09 - 07 Jan 2008 20:24:44 UTC - Search in distribution

Prima::IPA::Global - methods that produce images where every pixel is a function of all pixels in the source image River stage one • 1 direct dependent • 1 total dependent

Contains methods that produce images, where every pixel is a function of all pixels in the source image. The process can be described with the mapping function s = M(R) where "s" is the pixel value in the output images, and R is the source image. clo...

KARASIK/Prima-IPA-1.09 - 04 Jun 2016 18:35:24 UTC - Search in distribution

PDL::FFTW3 - PDL interface to the Fastest Fourier Transform in the West v3 River stage zero No dependents

This is a PDL binding to version 3 of the FFTW library. Supported are complex <-> complex and real <-> complex FFTs. NB to install wget http://www.fftw.org/fftw-3.3.4.tar.gz tar xvf fftw-3.3.4.tar.gz cd fftw-3.3.4/ ./configure --prefix=/usr --enable-...

ETJ/PDL-FFTW3-0.18 - 04 Oct 2021 21:30:30 UTC - Search in distribution

Audio::Analyzer - Makes using Math::FFT very easy for audio analysis River stage one • 1 direct dependent • 1 total dependent

This module makes it easy to analyze audio files with the Fast Fourier Transform and sync the output of the FFT in time for visual representation....

TRIDDLE/Audio-Analyzer-0.22 - 22 Jul 2013 22:36:22 UTC - Search in distribution

Audio::Gramofile - Perl interface to libgramofile, a library derived from Gramofile River stage one • 1 direct dependent • 1 total dependent

new returns an object initialised with the parameters specified in the original C code. e.g. my $gramofile = Audio::Gramofile->new; set_input_file sets the input .wav file for track splitting and signal processing methods. e.g. $gramofile->set_input_...

BOBW/Audio-Gramofile-0.08 - 18 May 2008 19:40:59 UTC - Search in distribution

PDL::DSP::Fir::Simple - Simple interface to windowed sinc filters. River stage one • 1 direct dependent • 1 total dependent

At present, this module provides one filtering routine. The main purpose is to provide an easy-to-use lowpass filter that only requires the user to provide the data and the cutoff frequency. However, the routines take options to give the user more co...

ETJ/PDL-DSP-Fir-0.006 - 14 Oct 2021 20:54:12 UTC - Search in distribution

Audio::Analyzer::ToneDetect - Detect freq of tones in an audio file or stream River stage zero No dependents

Consider this alpha software. It is still under fairly active development and the interface may change in incompatible ways. Audio::Analyzer::ToneDetect is a module for detecting single frequency tones in an audio stream or file. It supports mono PCM...

MIKEGRB/Audio-Analyzer-ToneDetect-0.04 - 09 Sep 2013 02:14:05 UTC - Search in distribution

Acme::AlgebraicToRPN - convert algebraic notation to sane RPN River stage zero No dependents

Given a string with algebraic notation, convert to RPN, which is what any crappy dime store calculator needs to do anyway. Doesn't really process anything, that's up to you. You will get an array back with all of the variables and operations in RPN f...

THECRAMPS/Acme-AlgebraicToRPN-0.02 - 10 Mar 2009 13:40:34 UTC - Search in distribution

Lab::Instrument::TDS2024B - Tektronix TDS2024B digital oscilloscope River stage zero No dependents

AKHUETTEL/Lab-Measurement-3.821 - 19 Jun 2022 12:16:00 UTC - Search in distribution

Math::Random::Brownian - Perl module for generating Fractional Brownian and Gaussian Noise River stage zero No dependents

Math::Random::Brownian is a perl module for calculating a realization of either fractional Brownian Motion, or a fractional Gaussian sequence. This is accomplished using the various methods. Currently, the C code for this module is due to Ton Dieker ...

WMSZELIGA/Math-Random-Brownian-0.03 - 17 Mar 2005 20:10:44 UTC - Search in distribution

Bundle::Math::Numeric - Bundle of modules related to numeric algorithms River stage zero No dependents

This is a bundle of modules related to numeric algorithms. Please have a look at Bundle::Math. If you would like to see a specific module included in a future version of this bundle, please send me an email or use rt.cpan.org....

SMUELLER/Bundle-Math-Numeric-1.00 - 05 Apr 2004 12:10:48 UTC - Search in distribution

Graphics::VTK::Imaging - A Perl interface to VTKImaging library River stage zero No dependents

Graphics::VTK::Imaging is an interface to the Imaging libaray of the C++ visualization toolkit VTK.....

CERNEY/Graphics-VTK-4.0.001 - 01 Feb 2003 15:47:39 UTC - Search in distribution

Bio::Graphics::Browser2::Plugin::Spectrogram River stage zero No dependents

The Spectrogram plugin builds up a spectrogram for digitized DNA sequence using the short-time fourier transform (STFT) method, adapted from classical digital signal processing methods. A sliding window of variable size and overlap is used to calcula...

LDS/GBrowse-2.56 - 15 Jan 2017 21:29:11 UTC - Search in distribution

Math::PhaseOnlyCorrelation - calculate the phase only correlation River stage zero No dependents

This module calculate Phase Only Correlation coefficients. This measures degree of similarity between two waves (signals) heed to only phase component, so this method is not affected by an amplitude difference. The more similar two signals (waves), c...

MOZNION/Math-PhaseOnlyCorrelation-0.06 - 17 Dec 2012 18:12:49 UTC - Search in distribution
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