Water marking for wav audio (PCM samples)

2018-06-19 10:09:07

I would like to know the best audio-water marking technique with below operations,

Add some audio-water marking in my WAV files (PCM samples) & store

Do some processing like, equalization & volume/gain updating etc.

Compare (1) & (2) to ensure integrity of audio content

Also what is the complexity & typical memory requirement (I need this for an embedded device)