How long will the STM32F407 discovery board take to calculate FFT of a 1024 sample sequence in seconds?

 

Integer or Floating Point Math ?

If integer, sample set 8/12/16/24 bits ?

Here is example and speed on ARM M3 - https://community.cypress.com/thread/17164

23,5 ms per FFT (1024 points, 32Bit float format, 60Mc processor clock)

Regards, Dana.

 

STM32F407 clocked at 168MHz, 1024-point 16-bit integer FFT, 136μs.

1024-point floating point, 17ms