Abstract: Disclosed is an operating method of an electronic device, including receiving a first user model from another electronic device of a user registered in the electronic device, through a communication circuit of the electronic device, refining a user model of the electronic device based on the first user model, and identifying the user based on a first voice input of the user by using the refined user model, wherein the user model is trained by the electronic device based on a second user model of at least one another user other than the user before the user is registered, and wherein the first user model is trained by the another electronic device based on a second voice input of the user obtained by the another electronic device of the user.

Abstract: An electronic device includes: a microphone configured to receive an audio signal including an utterance, a processor, and a memory configured to store instructions to be executed by the processor, wherein the processor may be configured to: generate a result of recognizing the utterance, determine whether the utterance is supported by the electronic device based on the result of recognizing the utterance, determine whether the utterance is to be processed by the electronic device based on whether the utterance is supported by the electronic device, and process a command corresponding to the utterance based on whether the utterance is to be processed by the electronic device.

Abstract: Disclosed is an operating method of an electronic device, including receiving a first user model from another electronic device of a user registered in the electronic device, through a communication circuit of the electronic device, refining a user model of the electronic device based on the first user model, and identifying the user based on a first voice input of the user by using the refined user model, wherein the user model is trained by the electronic device based on a second user model of at least one another user other than the user before the user is registered, and wherein the first user model is trained by the another electronic device based on a second voice input of the user obtained by the another electronic device of the user.

Abstract: A system, a user terminal, a method of the system, a method of the user terminal, and a computer program product are provided. The system includes a communication interface, at least one processor operatively coupled to the communication interface, and at least one piece of memory operatively coupled to the at least one processor, wherein the at least one piece of memory is configured to store instructions configured for the at least one processor to receive sound data from a first external device through the communication interface, obtain a voice signal and a noise signal from the sound data using at least some of an automatic voice recognition module, change the voice signal into text data, determine a noise pattern based on at least some of the noise signal, and determine a domain using the text data and the noise pattern when the memory operates.

Abstract: A system, a user terminal, a method of the system, a method of the user terminal, and a computer program product are provided. The system includes a communication interface, at least one processor operatively coupled to the communication interface, and at least one piece of memory operatively coupled to the at least one processor, wherein the at least one piece of memory is configured to store instructions configured for the at least one processor to receive sound data from a first external device through the communication interface, obtain a voice signal and a noise signal from the sound data using at least some of an automatic voice recognition module, change the voice signal into text data, determine a noise pattern based on at least some of the noise signal, and determine a domain using the text data and the noise pattern when the memory operates.