| 摘要 |
Driving apparatus for an electromechanical vibrator 10, which is disposed on a chair or seat 5, uses an audio signal applied from audio equipment A. The initially set strength of vibration is compensated in accordance with environmental noise, which is detected by noise detecting means 24. The person sitting on the chair or seat thus enjoys, e.g., music by ear and body vibration. The noise is detected by a microphone 241, low-pass filter 242, amplifier 243 and rectifier/integration circuit 244 and is used to control the gain of an amplifier 241 feeding the audio signals to the electromechanical vibrator 10. <IMAGE> |
