Method for acquiring noise-refined voice signal, and electronic device for performing same

An electronic device comprising:

• a plurality of microphones;
• and
• a processor electrically connected to the plurality of microphones,
• wherein the processor is configured to:
• obtain audio signals through the plurality of microphones,
• estimate a probability of existence of a voice signal included in the obtained audio signals,
• obtain estimated voice signals based on the audio signals and the probability of existence of the voice signal,
• obtain correlation information between the audio signals based on the probability of existence of the voice signal and/or the obtained audio signals, wherein the correlation information includes a covariance matrix between the estimated voice signals that correspond to the plurality of microphones, respectively,
• obtain voice blocking information based on the correlation information or a direction of arrival (DOA) estimation,
• obtain a first signal among the audio signals based on the audio signals, the correlation information, and the voice blocking information,
• obtain a second signal including the voice signal among the audio signals, and
• obtain a noise-removed voice signal by removing the first signal from the second signal.