Mini Voice Recorder for Arduino
FYI, these ISD chips sample audio and store a variable charge on a single flash like cell. They do not convert a sample to a numerical value. There is no data to be read from the chips nor (AFAIK) is there an opportunity to write data to play back to the chips. AFAIK, for us common people, each ISD chip needs to have its recording entered individually. Think of it like duplicating cassette tapes. Think about this when considering how to go about building your project.