Can I add or store a sound file inside ADAU1787 so that I can process it and How?

Hope ADI has returned from the holidays. 
May i know how to store an audio file or a sound file or wav format into the ADAU1787?

Hi SAIPRATHEEP ,

The ADAU1787 is not capable of storing any format of audio file. The Sigma DSP and Fast DSP are for processing of the signal chain created in the associated Sigma Studio schematics.

I believe I also provided an answer to your question in this thread: How to store audio file into ADAU1787 - Q&A - SigmaDSP Processors & SigmaStudio Dev. Tool - EngineerZone (analog.com)

I think an alternative solution would be to connect audio from your PC or phone audio connected to the analog input (AIN) of the ADC via 3.5mm aux cable, and then utilize the adder and white noise source block to combine these signals, which could then be routed to the stereo output. 

I think the project file in the other thread I linked would serve as a great starting point to achieve your desired setup. 

Please let me know if have any issues using the project file to get your desired setup or have any further questions. Thanks!

Best,

TBM