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CCS/MSP430FR5994: Hanning window for FFT with MSP430 LEA module

Laszlo Madarasz
Intellectual 600 points
Part Number: MSP430FR5994


Tool/software: Code Composer Studio

Hi,

I would like to ask your help on a problem I had stuck with:

I would like to use Hanning window in my own FFT application. In the FFT example source of DSP library, I only found example for the Hamming window and the documentation I had found was not detailed enough to learn from it what I need to know.  

Is the initHamming() fucntion modifiable to take Hanning form?

Is there any concrete example you aware of, in which MSP430 LEA modul used for a realtime frequency filtering ? (time domain - window - FFT- spectrum modification - iFFT - signal building (overlap) time domain)

Thank you for your help,

Laszlo

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    TI__Genius 15370 points

    Hi Laszlo,

    I'm not sure I fully understand your question but yes the initHamming() function can be modified to best fit the needs of your application. Here are some resources I find helpful when trying to understand the purpose of a hamming window:

    There are several examples available that showcase the capability of the LEA when performing an FFT:

    I'd also like to direct you to the DSPLIB User's Guide which provides a lot of very useful information on how to use LEA as well as it's limitation and supported API's. Let me know if you have any further questions.

    Best regards,

    Caleb Overbay

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