Earhole-wearable sound collection device, signal processing device, and sound collection method

A signal processing device, comprising:

• circuitry configured to:
• receive a first sound collection signal from a first microphone of an earhole-wearable sound collection device, wherein the first microphone is located in the earhole-wearable sound collection device;
• receive a second sound collection signal from a second microphone, wherein the second microphone is located outside the earhole-wearable sound collection device;
• control a first amplifier to amplify the first sound collection signal;
• control a second amplifier to amplify the second sound collection signal;
• correct frequency characteristics of the amplified first sound collection signal, wherein the frequency characteristics is corrected based on equalization of a high-frequency emphasizing type and least one of a low-pass filtering process, a bandpass filtering process, a noise gate process, or a compressor process;
• and
• add the amplified first sound collection signal having corrected frequency characteristics to the amplified second sound collection signal.

An information processing device, comprising:

• a speaker located in an earhole-wearable sound collection device;
• and
• circuitry configured to:
• receive a first sound collection signal from a first microphone of the earhole-wearable sound collection device, wherein the first microphone is located in the earhole-wearable sound collection device;
• receive a second sound collection signal from a second microphone, wherein the second microphone is located outside the earhole-wearable sound collection device;
• and
• control a first amplifier to amplify the first sound collection signal;
• control a second amplifier to amplify the second sound collection signal;
• and
• add the amplified first sound collection signal to the amplified second sound collection signal.

A signal processing method, comprising:

• receiving a first sound collection signal from a first microphone of an earhole-wearable sound collection device, wherein the first microphone is located in the earhole-wearable sound collection device;
• receiving a second sound collection signal from a second microphone, wherein the second microphone is located outside the earhole-wearable sound collection device;
• controlling a first amplifier to amplify the first sound collection signal;
• controlling a second amplifier to amplify the second sound collection signal;
• and
• adding the amplified first sound collection signal to the amplified second sound collection signal.

A signal processing method, comprising:

• receiving a first sound collection signal from a first microphone of an earhole-wearable sound collection device, wherein the first microphone is located in the earhole-wearable sound collection device;
• receiving a second sound collection signal from a second microphone, wherein the second microphone is located outside the earhole-wearable sound collection device;
• controlling a first amplifier to amplify the first sound collection signal;
• controlling a second amplifier to amplify the second sound collection signal;
• correcting frequency characteristics of the amplified first sound collection signal, wherein the frequency characteristics is corrected based on equalization of a high-frequency emphasizing type and at least one of a low-pass filtering process, a bandpass filtering process, a noise gate process, or a compressor process;
• and
• adding the amplified first sound collection signal having corrected frequency characteristics to the amplified second sound collection signal.

An information processing method, comprising:

• in an information processing device that comprises a speaker and circuitry, wherein the speaker is located in an earhole-wearable sound collection device:
• receiving, by the circuitry, a first sound collection signal from a first microphone of an earhole-wearable sound collection device, wherein the first microphone is located in the earhole-wearable sound collection device;
• receiving, by the circuitry, a second sound collection signal from a second microphone, wherein the second microphone is located outside the earhole-wearable sound collection device;
• and
• controlling, by the circuitry, a first amplifier to amplify the first sound collection signal;
• controlling, by the circuitry, a second amplifier to amplify the second sound collection signal;
• and
• adding, by the circuitry, the amplified first sound collection signal to the amplified second sound collection signal.