Audio processing apparatus, control method, and storage medium, each for performing noise reduction using audio signals input from plurality of microphones

An audio processing apparatus comprising:

• a first microphone configured to acquire ambient sound;
• a second microphone configured to acquire sound occurring from a noise source;
• a detection unit configured to detect a state concerning the audio processing apparatus;
• a first conversion unit configured to perform Fourier transform of an audio signal output from the first microphone to generate a first audio signal;
• a second conversion unit configured to perform Fourier transform of an audio signal output from the second microphone to generate a second audio signal;
• a generation unit configured to generate noise data using the second audio signal and a parameter concerned with noise of the noise source;
• a subtraction unit configured to subtract the noise data from the first audio signal;
• and
• a third conversion unit configured to perform inverse Fourier transform of an audio signal output from the subtraction unit,
• wherein the generation unit corrects the parameter according to the state concerning the audio processing apparatus detected by the detection unit.

A control method for an audio processing apparatus including an attachment unit configured to attach a lens including a noise source, a first microphone configured to acquire ambient sound, and a second microphone configured to acquire sound occurring from the noise source, the control method comprising:

• performing Fourier transform of an audio signal output from the first microphone to generate a first audio signal;
• performing Fourier transform of an audio signal output from the second microphone to generate a second audio signal;
• generating noise data using the second audio signal and a parameter concerned with noise of the noise source;
• subtracting the noise data from the first audio signal;
• and
• performing inverse Fourier transform of an audio signal generated by subtracting the noise data,
• wherein, in generating the noise data as the parameter, a parameter associated with a type of the lens attached to the attachment unit is used.

A control method for an audio processing apparatus including a first microphone configured to acquire ambient sound, and a second microphone configured to acquire sound occurring from a noise source, the control method comprising:

• detecting a state concerning the audio processing apparatus;
• performing Fourier transform of an audio signal output from the first microphone to generate a first audio signal;
• performing Fourier transform of an audio signal output from the second microphone to generate a second audio signal;
• generating noise data using the second audio signal and a parameter concerned with noise of the noise source;
• subtracting the noise data from the first audio signal;
• and
• performing inverse Fourier transform of an audio signal generated by subtracting the noise data,
• wherein, in generating the noise data, the parameter is corrected according to the detected state concerning the audio processing apparatus.

A non-transitory computer-readable storage medium storing computer-executable instructions that, when executed by a computer, cause the computer to perform a control method for an audio processing apparatus including an attachment unit configured to attach a lens including a noise source, a first microphone configured to acquire ambient sound, and a second microphone configured to acquire sound occurring from the noise source, the control method comprising:

• performing Fourier transform of an audio signal output from the first microphone to generate a first audio signal;
• performing Fourier transform of an audio signal output from the second microphone to generate a second audio signal;
• generate noise data using the second audio signal and a parameter concerned with noise of the noise source;
• subtracting the noise data from the first audio signal;
• and
• performing inverse Fourier transform of an audio signal generated by subtracting the noise data,
• wherein, in generating the noise data as the parameter, a parameter associated with a type of the lens attached to the attachment unit is used.

A non-transitory computer-readable storage medium storing computer-executable instructions that, when executed by a computer, cause the computer to perform a control method for an audio processing apparatus including a first microphone configured to acquire ambient sound, and a second microphone configured to acquire sound occurring from a noise source, the control method comprising:

• detecting a state concerning the audio processing apparatus;
• performing Fourier transform of an audio signal output from the first microphone to generate a first audio signal;
• performing Fourier transform of an audio signal output from the second microphone to generate a second audio signal;
• generating noise data using the second audio signal and a parameter concerned with noise of the noise source;
• subtracting the noise data from the first audio signal;
• and
• performing inverse Fourier transform of an audio signal generated by subtracting the noise data,
• wherein, in generating the noise data, the parameter is corrected according to the detected state concerning the audio processing apparatus.