| 摘要 |
<p>A class D amplifier is provided with a frequency characteristic compensation function. An automatic frequency characteristic compensation circuit is disposed at an input unit of a class D amplifier. The frequency characteristic of the class D amplifier is automatically measured while a load is connected, using a test signal having a predetermined frequency and signal level. An inverse characteristic is computed for compensating the frequency characteristic to the design frequency characteristic, and the inverse characteristic is set in the automatic frequency characteristic compensation circuit. <IMAGE></p> |
