| 摘要 |
PURPOSE:To extend a hearing point, where orientation of a stereo is attained, to a wide range and obtain easily a sufficient acoustic pressure and the feeling of a sufficient sound volume by providing an acoustic pressure level difference between two speaker units. CONSTITUTION:Speaker units 1A and 1B and speaker units 1C and 1D are set respectively at an angle theta in the range of 20-40 deg.. The acoustic pressure level of the speaker unit 1B is made higher than that of the speaker unit 1B, and the acoustic pressure level difference is controlled to 2-4dB. The acoustic pressure level of the speaker unit 1D is made higher than that of the speaker unit 1C, and the acoustic pressure level difference is controlled to 2-4dB. Each of speaker systems 1A and 1B and speaker systems 1C and 1D consists of a one-way system. Thus, sufficient stereo orientation is attained even if speaker systems are deflected right or left. |
