| 摘要 |
Directional, preferably differential, microphones (11) at the back of the V-shape table point to respective speaker positions disposed at the front of the table substantially in line with the microphones (11). The microphones serve as selective sound pick-ups for receiving each speaker's speech and also for determining which one of the various possible speakers is actually speaking. A grating (26), e.g. of metal and with a fabric covering (25), and having longitudinal and cross bars (28,27), is disposed a short distance in front of the microphones between the microphones and the speaker positions. The grating provides a useful degree of "blinkering" to make the microphones relatively less sensitive to off-axis speakers than they would be without the grating. <IMAGE> |
