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Example

Window functions + FFT

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Author: Olexiy Bondar

Last Updated: 2017-12-06

Package Version: 1.0.0.0

Example: 1.0.0.0

Category: Internal MCU modules

Downloaded: 290 times

Not followed.

License: MIT license  

Window function is wide using in DSP. for more information read wiki:
https://en.wikipedia.org/wiki/Window_function
this exemple is based on FFT + SIN Gererator
https://libstock.mikroe.com/projects/view/2207/fft-sin-gererator

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Download All [6.68MB]

DOWNLOAD LINK RELATED COMPILER CONTAINS
1509101032_window_functions_mikroc_arm.zip [6.68MB] mikroC PRO for ARM
  • lib
  • src
  • exa
  • hlp
  • hex
  • sch
  • pcb
  • doc

Example Blog

no window spectrum

no window spectrum

you can see bell-shaped spectrum, DC and 1-st harmonic can be seen clearly

View full image
hann window

hann window

harmonics can be seen

View full image
hamming window

hamming window

harmonics can be seen

View full image
blackman window

blackman window

harmonics can be seen

View full image
blackman-nuttall window

blackman-nuttall window

harmonics can be seen

View full image

ALSO FROM THIS AUTHOR

FFT + SIN Gererator

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example is based on sin wave generator example: https://libstock.mikroe.com/projects/view/2206/generating-sin-wave-by-timer-pwm-with-dma with addind FFT(Fast Fourier Transform) to see frequency domain instead time domain on PC.

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Generating Sin wave by Timer PWM with DMA

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example of generating sin wave with timer PWM by DMA and measuring it by ADC with timer triggering(sending by uart to PC). Display data on PC with SerialPlot

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FIR(Finite impulse response) + FFT(Fast Fourier Transform)

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Finite impulse response (FIR) filters is wide using in DSP. here is examlple of low pass filter. for more information read wiki: https://en.wikipedia.org/wiki/Finite_impulse_response this exemple is based on FFT + SIN Gererator https://libstock.mikroe.com/projects/view/2207/fft-sin-gererator

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