Table 1 The sound power of the primary sound source and the total sound power of secondary loudspeakers at 1000 Hz without and with the virtual sound barrier.
From: Controlling sound radiation through an opening with secondary loudspeakers along its boundaries
Sound power (W) | The primary sound source | Secondary loudspeakers |
|---|---|---|
Without virtual sound barrier | 2.5 × 10−4 | 0.0 |
With virtual sound barrier | 6.6 × 10−8 | −5.0 × 10−8 |
