| 摘要 |
A mattress (10) incorporating means to simulate the heartbeat of an adult, preferably a mother, which comprises a sound chamber (30), means to simulate heartbeat and power means therefor. The heartbeat may be simulated by a pulse generator circuit having its output connected via an audio amplifier circuit to at least one loudspeaker (Fig. 5). In addition means may be provided to simulate the respiratory movements of an adult. |
