| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electromagnetic induction heating cooker emitting cancelling-out sounds of a phase opposite to that of self-emission noises from a top plate, resulting in the whole top plate working as a noise cancelling-out speaker. <P>SOLUTION: A microphone 2 collects noises generated by an electromagnetic induction heating cooker body 1, and an antiphase vibration generator 3 generates vibration of the phase opposite to that of the collected noises and transmits it to a vibrator 4. The vibrator 4 vibrates the whole top plate 5 to generate noise cancelling-out sounds. A vibration region of the top plate 5 is larger than that of a normal speaker, and so the cancelling-out sounds have sound deadening effects in a wider range than those generated by the speaker. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
