| 摘要 |
PURPOSE:To reinforce a bass part by providing a low-pass filter, an amplifier and a portable plane loudspeaker and directly outputting low-pitched sound to a body. CONSTITUTION:A portable stereo device 1 is connected to a conventional type headphone 2 and a low-pass filter 3. The low frequency range of a stereo voice is outputted through the low-pass filter 3 and an amplifier 4 by a portable loudspeaker 5 located in a human body abdomen part. By outputting the low- pitched sound to the human body abdomen in such a way, the real feeling of the low-pitched sound can be obtained. Thus, the sound output of the portable stereo device, especially, the low-pitched sound part can be reinforced. |
