| 摘要 |
<p>In each category representing a signal type, a recommended minimum value (414) and a recommended maximum value (415) of a level of a signal are stored. The recommended minimum value (414) and the recommended maximum value (415) are determined based on a dynamic range of the signal of the type, for example. A function configured to set a gain used for adjusting a level of an input signal according to a user operation, and a function configured to set a category are provided. Further, a meter portion (212) configured to display the level (613) of the signal level-adjusted by the set gain is provided, and the recommended minimum value (414) and the recommended maximum value (415) of the set category are exhibited (651, 652) in a manner to correspond to the display by the meter portion (212).</p> |
