Wearable acoustic device, wearable acoustic system, and acoustic processing method

A wearable acoustic system, comprising:

• two wearable acoustic devices, each of the two wearable acoustic devices comprising:
• a first microphone configured to collect external sound to acquire input sound;
• a second microphone configured to collect sound perceived by the ear in a state of the wearable acoustic device being worn on the ear of the user, the sound perceived by the ear including output sound;
• a first processor configured to acoustically adjust the input sound using active noise control, based on the sound perceived by the ear collected by the second microphone, to acquire a first sound signal;
• a second processor configured to perform predetermined filter processing on the input sound, to acquire a second sound signal;
• a gain adjuster configured to adjust an attenuation amount characteristic of the sound perceived by the ear for a frequency to a predetermined characteristic and sound volume by combining the first sound signal and the second sound signal according to a level of the input sound, to acquire an adjusted sound signal;
• and
• a speaker configured to output the output sound that is based on the adjusted sound signal;
• wherein a first of the two wearable acoustic devices is configured for a left ear, and a second of the two wearable acoustic devices is configured for a right ear, and
• wherein each of the two wearable acoustic devices is configured to independently adjust a sound volume of the sound perceived by the ear.

An acoustic processing method for a wearable acoustic device configured to be worn on an ear of a user, comprising:

• collecting, by a first microphone of the wearable acoustic device, external sound to acquire input sound;
• collecting, by a second microphone of the wearable acoustic device, sound perceived by the ear in a state of the wearable acoustic device being worn on the ear of the user, the sound perceived by the ear including output sound;
• acoustically adjusting the input sound using active noise control, based on the sound perceived by the ear collected by the second microphone, to acquire a first sound signal;
• performing predetermined filter processing on the input sound, to acquire a second sound signal;
• adjusting an attenuation amount characteristic of the sound perceived by the car for a frequency to a predetermined characteristic and sound volume by combining the first sound signal and the second sound signal according to a level of the input sound, to acquire an adjusted sound signal;
• and
• outputting the output sound that is based on the adjusted sound signal.