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Return to Fourier.

Retrieved from "http://openmoko.org/wiki/Fourier"
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Fourier screenshot.png Fourier

a realtime frequency analysis of recorded sound data and displays it on screen.


Homepage: http://www.reitwiessner.de/openmoko/fourier.html
Package: fourier_1.0_arm.ipk
Tested on: Om 2008.8


download source:http://www.reitwiessner.de/openmoko/fourier-1.0.tar.gz

Introduction

Fourier screenshot.png

Fourier does a realtime frequency analysis of recorded sound data and displays it on screen.

The sampling rate is 44100 and it uses 256 samples to calculate the transform. The output is done in a sliding window fashion.

Needed Libraries

Fourier uses libsdl for graphics output and libfftw3 for the frequency analysis. You need to additionally install libfftw3 for FDOM, a suitable package can be downloaded here: libfftw3-3_3.1.2-r1_armv4t.ipk (8.5 KB) (obtained from http://www.angstrom-distribution.org/feeds/2007/ipk/glibc/armv4t/base/libfftw3-3_3.1.2-r1_armv4t.ipk)

Installation

opkg install http://www.angstrom-distribution.org/feeds/2007/ipk/glibc/armv4t/base/libfftw3-3_3.1.2-r1_armv4t.ipk

libsdl-1.2-0 

http://www.opkg.org/packages/fourier_1.0_arm.ipk