| 摘要 |
<p>PURPOSE:To obtain a sound output in response to a digital input signal, by driving an air oscillator with a driver to a mechanical position in response to a value of the digital input signal. CONSTITUTION:A position detector 9 is provided, which detects a mechanical oscillating position interlocked with an air oscillator 8 to obtain sound waves S in oscillating air. A digital position signal B being an output of the detector 9 is given to a deviation detection circuit 6 together with a digital position signal A from a digital audio equipment. The circuit 6 detects the deviation between the signals A and B, the value is converted into an electric signal, and inputted to a driver 7. The driver 7 converts the mechanical oscillating position of the element 8 and oscillates air to obtain the waves S. The circuit 6, the driver 7, the element 8 an the detector 9 form an automatic control system and the mechanical position corresponding to the value of the input signal A is automatically adjusted.</p> |
