• CMSIS-DSP: question about FFT and the frequency bin example
    Hi, I hope this is the right place to ask about DSP/FFT. I'm digging deeper into CMSIS-DSP and managed to get the FFT frequency bin example to work on a Cortex-M3. I have a few questions about CMSIS in...
  • CMSIS DSP - FIR decimation
    Hi, I am trying to implement FIR decimation on PDM input. Which FIR decimator function should I use? I am now trying to implement arm_fir_decimate_fast_q15 since I need to feed the output (hopefully PCM...
  • CMSIS DSP arm_fir_decimate function: correct use?
    Dear All, I'm puzzled with results I'm getting from using the arm_fir_decimate_q15 function in CMSIS DSP_Lib, and I'd like to clarify if I use the function correctly. Any help would be really much appreciated...
  • CMSIS DSP new functionality proposal
    CMSIS DSP is a great tool which allows Cortex-M4 devices to have a great app field range, even replacing some general purpose DSP sometimes. However I am missing some "simple" new functions that could...
  • CMSIS DSP handle large matrices
    Hello I'm using a cortex-m3 low power MCU to remove baseline from a signal acquired through a sensor, 256 float32_t samples for that I'm trying to implement the Asymmetric Least Squares Baseline Subtraction...