Hello Ruchit,
Using ARP9600 you can keep a button pressed and keep on recording the voice captured by a microphone in the recording mode of the IC.
You can later play that also in play mode of the IC.
Suggest you to find this link which will give you a datasheet. It has got few sample circuits which you can try out straight away.
http://www.datasheetcatalog.org/datasheet/aplus/APR9600.pdf
Sorry for the late response. If you have any further doubts please share with us.