Certain evidence is excluded from a criminal case because it is privileged. See O.C.G.A. §§ 24-5-501- 24-5-503. The privilege can be waived. Ingram v. State, 262 Ga. App. 304 (2003) (waiver of spousal privilege); Taylor v. Taylor, 179 Ga. 691 (1934) (waiver of attorney-client privilege).