发明申请
US20130163779A1 SOUND OUTPUT DEVICE 有权
声音输出设备

SOUND OUTPUT DEVICE
摘要:
A sound output device for masking an operation sound generated by equipment, having: an operation determining unit that determines an operation mode to be executed by the equipment; and a sound output unit that outputs a masking sound on the basis of the operation mode determined by the operation determining unit, the masking sound changing at least in sound pressure level over time.
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