| 摘要 |
<p>PURPOSE:To automatically form a signal having an arbitrary frequency characteristic without requiring machinery depending on specific media by automatically forming an electric signal such as 1/f fluctuation. CONSTITUTION:A first frequency control circuit 2 changing a frequency characteristic is provided to a white noise generating circuit 1 electrically generating white noise and, further, an audio device 3 being a stimulus applying device converting the output from the frequency control circuit 2 to a sensible stimulus is provided.</p> |
