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VDSP ADSP21469, reproductibility issue

Question asked by alex.buisson on Jul 18, 2016
Latest reply on Jul 25, 2016 by alex.buisson

Hi,

I work on an audio processing implementation on a ADSP21469 using VDSP and I get very weird results

As far as I know my code should be correct but even with a file based processing I got weird error at the end.

In fact my output should be identical (or really close) to a Matlab model, but for now I get some random error and more than that even if I don't modify the audio spectrum (between FFT/IFFT) I get some error peak at position varying between each run of my test project.

 

Any idea would be welcome, because for now I have no idea on how to proove that my is correct if just an FFT/IFFT process lead to different output.

 

Thanks,

Alex

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