Patent ID: 8976987
Filing Date: 2015-03-10
Classification: H04R

Abstract:
1. A sound reproduction device comprising: a left channel housing unit that accommodates at least a left channel driver unit outputting a left channel sound, a left channel microphone recording an external sound, and a left channel micro-computer controlling a setting for a noise cancelling processing based on a recording signal of the left channel microphone; and a right channel housing unit that accommodates at least a right channel driver unit outputting a right channel sound, a right channel microphone recording an external sound, and a right channel micro-computer controlling a setting for a noise cancelling processing based on a recording signal of the right channel microphone, wherein the left channel micro-computer and the right channel micro-computer are configured to communicate data with each other, wherein a left channel battery for power of the left channel micro-computer is accommodated in the left channel housing unit and a right channel battery for power of the right channel micro-computer is accommodated in the right channel housing unit, and wherein one of the left channel micro-computer and the right channel micro-computer is a master computer, and wherein the master computer is configured to detect whether remaining levels of the left channel battery and the right channel battery are sufficient, and the master computer is configured to perform control so that the left channel micro-computer and the right channel micro-computer are in an OFF state when at least one of the remaining levels of the left channel battery and the right channel battery is insufficient.