Patent ID: 7065219

Claim:
An acoustic apparatus comprising: a headphone section mounted on a user's head having first and second headphone boxes arranged respectively on the ears of the user and having first and second microphone elements mounted respectively on the first and second headphone boxes for detecting sound around the user and signal acoustic transducing elements mounted respectively in the first and second headphone boxes functioning as sound sources with first output terminals for outputting microphone audio signals collected by the first and second microphone elements and first input terminals for inputting audio signals supplied to the first and second signal acoustic transducing elements; and a control circuit section separate and independent from the headphone section and having second input terminals connected to the first output terminals and second output terminals connected to the first input terminals for controlling at least frequency characteristics and gain characteristics of the microphone audio signals from the first and second microphone elements of the headphone section input through the second input terminals, for generating a cancel audio signal for canceling effects of the sound around the user in the signals fed to the first and second signal acoustic transducing elements, and for supplying the cancel audio signal to the first and second signal acoustic transducing elements of the headphone section through the second output terminals, whereby ambient sound around the user is cancelled in a range of 50 Hz to 1.5 kHz, said control circuit section further including recording means for recording the microphone audio signals output from the first and second microphone elements as binaural audio signals.