Electronic device and controlling method thereof

A method of an electronic device, the method comprising:

• obtaining a first voice signal corresponding to a user voice from an audio signal based on speech feature information including information about a user speech feature;
• obtaining a noise signal from the audio signal based on the audio signal and the first voice signal, the noise signal being distinguished from the first voice signal;
• identifying at least one clean section in the first voice signal, based on the first voice signal and the noise signal, the at least one clean section having an amount of the noise signal that is less than a threshold value;
• updating the speech feature information based on voice data corresponding to the at least one clean section;
• and
• obtaining a second voice signal corresponding to the user voice from the audio signal based on the updated speech feature information.

An electronic device comprising:

• memory that stores program code, and at least one processor that executes the program code to cause the at least one processor to:
• obtain a first voice signal corresponding to a user voice from an audio signal based on user speech feature vectors,
• identify at least one clean section in the first voice signal, the at least one clean section having an amount of noise that is less than a threshold value,
• update the user speech feature vectors based on voice data corresponding to the at least one clean section, and
• obtain a second voice signal corresponding to the user voice from the audio signal based on the updated user speech feature vectors.