16384 points of FFT(Fast Fourier Transform)

SA V.1 · ‎2024-02-16

Hello community, In my project requires upto 16384 points of FFT(Fast Fourier Transform) . I found out that I can’t perform this number of FFT points using arm CMSIS DSP library since it is limited to 4096 point Max. Due to this I have to use external library So I dont have any external library idea guide me to achive this on the micro-controller (STM32H745ZI).CMSIS DSP It works well up to 4098 point. I need to perform 16384 point so any library files,links , ideas or any video links could helpfull...

Andrew Neil · ‎2024-02-16

https://www.google.com/search?q=microcontroller+16384+points+FFT ?

maybe also https://www.google.com/search?q=Cortex-M7+16384+points+FFT ?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

SA V.1 · ‎2024-02-19

By looking above links i didnt get any. mainly i am looking for library file is it possible to share ??

Andrew Neil · ‎2024-02-19

Go on.

The FFT is a very long-established and widely used algorithm - there must be plenty of general implementations that could be ported to any target ...

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

SA V.1 · ‎2024-02-21

*.I want to perform a 16384 or 32768 points FFT we cant perform this much of points using CMSIS_DSP library clear this point .

*. So i need to choose a library which will support ( to perform 16384 or 32768 points in STM32H745xx microcontroller and the sotware STM32CubeIDE )

which library should i choose ?how to adopt that? Any library name or library file or library link ?

so will resolve this step first later will move further .

Andrew Neil · ‎2024-02-22

Have you actually tried searching the interwebs?

Again, the FFT is a very long-standing and widely-used algorithm - there must be plenty that can do this; eg,

https://www.google.com/search?q=16384+or+32768+points+FFT+C+code

Also, for finding source code, GitHub is a good place to search; eg,

https://github.com/search?q=FFT&type=repositories

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

MasterT · ‎2024-02-22

Check this out:

https://drive.google.com/file/d/1myq_NR1GagN6yPkTlhplRmIVfKK6TxrS/view?usp=drive_link

https://drive.google.com/file/d/1DzUVrgU4mdnkKblT_ltabVeJS97TnC5g/view?usp=drive_link

https://www.youtube.com/watch?v=x82-uNLWfxI

Code arduino IDE - officilal based on ST core.

Andrew Neil · ‎2024-09-24

Continued:

https://community.st.com/t5/stm32-mcus-products/time-delay-in-fft-performance/m-p/723890

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

Ayaa · ‎2025-04-14

HI,I want to ask you if you find solution for getting more than 4098 points FFT ?

Andrew Neil · ‎2025-04-14

@Ayaa - see the thread linked immediately before your post

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.