Downsampling/Upsampling blocks up to 64

Hello,

I have a specific processing structure where I need to work at 750Hz (48k stream downsampled by 64). But because the downsampling/upsampling blocks are maximum 16, I do 2 downsampling/upsampling, one by 16 and one by 4. The problem is that our DSP is almost full in time resources and the compiler counts twice the framework (one at 3000 and one at 750).

So is that possible to have a custom blocks that can downsample/upsample up to 64 ?

The product including this DSP is already in production, so we're quite running out of time, and we just discovered that we are overflowing the dsp in cycle resources.

Hope you can help us to solve this issue.

Best Regards.

Configuration :

DSP: ADAU1452, SigmaStudio: 4.2 (64bit version)

Audio Signal Processors

adau1452

upsampling

sigmastudio

SigmaDSP Audio Processors

multirate

downsampling

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