Method and apparatus for sending multimedia data

Provided are a method and an apparatus for sending multimedia data. A first device, which provides an audio signal to a second device, comprises: a control unit for dividing an audio signal inputted to the first device into a plurality of audio frames, comparing at least one previous audio frame pre-stored in a memory of the first device with a current audio frame among a plurality of audio frames, and selecting one from among the pre-stored previous audio frames on the basis of a similarity between the pre-stored previous audio frame and the current audio frame; and a communication unit for sending an identification value of the selected previous audio frame to the second device.