Abstract: Audio recording location authentication is needed when we want to prove an any evidence as recording of an event, audio recording depends on the various factors like geometry,composition of the audio recording and also a recording device. To authenticate the recording we need to consider many features of event happened. Methods are Electrical network frequency is machine learning based a system find grid environment. Sabin & Erying approach usefull for acoustic environment design. Time domain analysis effective for editing and compression attack.Sttatistical pattern recognization with help of classification and validation gives more accurate result. This paper is a survey of various approaches and techniques used to authenticate recorded audio.
Keywords: Audio Recording, Sabin & Erying, Time domain.