Electronic apparatus, control method thereof and electronic system

An electronic apparatus comprising:

• a microphone;
• a communication interface;
• and
• at least one processor;
• and
• a memory configured to store a first neural network model, a second neural network model, and instructions which, when executed by the at least one processor, cause the electronic apparatus to:
• based on receiving a user voice during a plurality of predetermined intervals through the microphone, perform a device identification operation during each predetermined interval from among the plurality of predetermined intervals while the user voice is being received, wherein the device identification operation comprises:
• acquiring an operation result by inputting the user voice into the first neural network model,
• identifying at least one device corresponding to the user voice by inputting the operation result into the second neural network model, and
• controlling the communication interface to transmit the operation result to the at least one device,
• wherein the first neural network model includes only some layers of a third neural network model,
• wherein the some layers are obtained by:
• training the third neural network model comprising the some layers and remaining layers to identify a text from a voice,
• fixing weight values of the remaining layers, and
• additionally training the some layers based on a plurality of sample user voices corresponding to the electronic apparatus and a plurality of sample texts corresponding to the plurality of sample user voices,
• wherein, when the some layers are additionally trained, the remaining layers are not additionally trained, and
• wherein the second neural network model is trained to identify a device corresponding to the voice.