IPHONE 4 HOW TO TURN SOUND OF AFTER SENDING A TEXT?

I have an iphone 4 and everytime i send a text it makes a weird noise to let me know its sent to the sender is there any way i can switch it off or change it? I have just updated to IOS6.

Other than having your phone on silent; no.

Look in settings under sound?

When I want sound off like at work, I just flip the tiny switch in the upper left and all ringing and text sounds are muted.