Electronic device and method for outputting sound

A method of operating an electronic device, the method comprising:

• receiving input signals of ambient sounds input respectively through a plurality of microphones of the electronic device;
• separating each of the input signals into a plurality of frequency bands by frequency conversion by an audio module of the electronic device;
• obtaining a gain value for each of the plurality of frequency bands based on an inter-channel phase variance for the plurality of frequency bands by the audio module;
• filtering a first frequency band signal with a directionality based on the gain value for each of the plurality of frequency bands by the audio module;
• synthesizing the filtered first frequency band signal and a signal obtained by amplifying a first input signal input to a first microphone among the plurality of microphones;
• and
• outputting, through a speaker of the electronic device, an output signal obtained based on synthesizing the filtered first frequency band and the amplified first input signal.

A non-transitory storage medium storing a program including executable instructions which when executed by a processor of an electronic device, cause the electronic device to:

• receive input signals of ambient sounds input respectively through a plurality of microphones of the electronic device;
• separate each of the input signals into a plurality of frequency bands by frequency conversion by an audio module of the electronic device;
• obtain a gain value for each of the plurality of frequency bands based on an inter-channel phase variance for the plurality of frequency bands by the audio module;
• filter a first frequency band signal with a directionality based on the gain value for each of the plurality of frequency bands by the audio module;
• synthesize the filtered first frequency band signal and a signal obtained by amplifying a first input signal input to a first microphone among the plurality of microphones;
• and
• output, through a speaker of the electronic device, an output signal obtained based on synthesizing the filtered first frequency band signal and the amplified first input signal.