Thispaperpresentsanovelschemeofwatermarkingofdigitalimagesforcopyrightprotectionandauthentication.Inthispaperweproposedamethodofembeddingowner’sspeechsignal.Speechbeingabiometricdata,thewatermarksignalinthismethodisexpectedtobemoremeaningfulandhasclosercorrelationwithcopyrightholder