>
<tr>
<td><code>_,(1,m:-):*</code></td>
<td>core syntax</td>
</tr>
</tbody>
</table>
<h3 id="example-12-a-mute-button">Example 12: A <em>mute</em> button</h3>
<p>We would like to be able to mute the sound completely at the touch of a button, without having to change the volume. </p>
<p>Let's add a mute stage to our mono amplifier. In order to mute the signal we just have to mutiply it by 0. We will use for that purpose a <code>checkbox(...)</code>, a user interface element that produces a signal which is 0