An electronic apparatus comprising: a speaker ; a microphone ; a communicator configured to communicate with an external electronic apparatus ; and a processor configured to: activate the microphone in response to receiving a signal indicating that the external electronic apparatus is in an initial setting state through the communicator, the signal being broadcasted by the external electronic apparatus via a first wireless communication method, process a sound received through the microphone after the microphone is activated according to the signal, to obtain address information of the external electronic apparatus from the sound received through the microphone by demodulating the received sound and extracting the sound including the address information of the external electronic apparatus from the received sound, and to generate an inverted sound by inverting a phase of the extracted sound including the address information received through the microphone, and in response to the address information being obtained from the sound, perform wireless communication with the external electronic apparatus based on the obtained address information and output the inverted sound through the speaker such that the sound output by the external electronic apparatus is offset by the inverted sound. a speaker ; a microphone ; a communicator configured to communicate with an external electronic apparatus ; and a processor configured to: activate the microphone in response to receiving a signal indicating that the external electronic apparatus is in an initial setting state through the communicator, the signal being broadcasted by the external electronic apparatus via a first wireless communication method, process a sound received through the microphone after the microphone is activated according to the signal, to obtain address information of the external electronic apparatus from the sound received through the microphone by demodulating the received sound and extracting the sound including the address information of the external electronic apparatus from the received sound, and to generate an inverted sound by inverting a phase of the extracted sound including the address information received through the microphone, and in response to the address information being obtained from the sound, perform wireless communication with the external electronic apparatus based on the obtained address information and output the inverted sound through the speaker such that the sound output by the external electronic apparatus is offset by the inverted sound. activate the microphone in response to receiving a signal indicating that the external electronic apparatus is in an initial setting state through the communicator, the signal being broadcasted by the external electronic apparatus via a first wireless communication method, process a sound received through the microphone after the microphone is activated according to the signal, to obtain address information of the external electronic apparatus from the sound received through the microphone by demodulating the received sound and extracting the sound including the address information of the external electronic apparatus from the received sound, and to generate an inverted sound by inverting a phase of the extracted sound including the address information received through the microphone, and in response to the address information being obtained from the sound, perform wireless communication with the external electronic apparatus based on the obtained address information and output the inverted sound through the speaker such that the sound output by the external electronic apparatus is offset by the inverted sound. <EOS>