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ADAU1452 frequency domain operation

Question asked by Z0mb13 on Mar 12, 2017
Latest reply on Mar 14, 2017 by venkatesan


Let's speak about the block schematic and frequency domain operations of the ADAU1452 in the complex format. Currently I'm able to:

- perform FFT and IFFT with a 50% window.

- add (the complex add block isn't complex so it doesn't work, but the mixer block is)

- multiply by a constant (complex gain)


I think it would be great improvement to be able to:

- add a constant

- multiply

- delay

So we could perform some frequency domain filtering, without having to ask for a custom algorithm. There are many things that are very difficult to do in the temporal domain and easy to do in the frequency domain. Illustrative example: pitch shifting.


Best regards,