# Fourier

### From Openmoko

(Difference between revisions)

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− | 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 | + | 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 |

## Revision as of 09:26, 20 November 2008

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.

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