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Fast Fourier Transform using Perl
http://warped.org/tek/ee6904-final.pdf
The THS.pm Perl module and the FFT.pl application have only been tested in one environment for limited applications. Hopefully people will find new and creative ways to use them. One current limitation in the FFT function is the limited range of frequencies available for each time-base setting. For instance on a 1ms/division time-base the FFT is
Pasky’s Log » Realtime Signal Analysis in Perl
The input signal is transformed to a frequency spectrum (see box) using real discrete FFT. So, we have the audio signal coming in from a regular mic device and need to process it further. I chose Perl for quick prototyping and I have assumed that I …
Math-FFT-1.36 - Perl module to calculate Fast Fourier ...
https://metacpan.org/dist/Math-FFT
Perl module to calculate Fast Fourier Transforms. As a valued partner and proud supporter of MetaCPAN, StickerYou is happy to offer a 10% discount on all Custom Stickers, Business Labels, Roll Labels, Vinyl Lettering or Custom Decals.
Analyzing WAV Files with Perl - TomaCorp
http://www.tomacorp.com/perl/wav/Freqext.html
WAV files created with a microphone and a sound card can be analyzed with a perl program. A description of this process and supporting code are presented. ... These instruments create an audio tone, which is recorded and then analyzed with a perl program. ... This example program uses the FFT to find the frequency of a tone in a WAV file ...
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