The 用 of 滤器 to modify the 频谱 of a 声波 either for 创造力 效果（效应） or as a corrective A 图表 equaliser provides 控制 over a large 数 of 滤器 twenty or more 盖 the 為耳/音频 范围（排列） allowing selected 频带 of 频率 to be cut or boosted One 应用（应用程序） is to 补偿 for any undesired 间 共鸣 which might otherwise lead to inappropriate adjustments being made during the 錄/录 过程 the equaliser being applied between the monitor 输出 from the 混 desk and the 主要 放大器 A 'parametric equaliser' is a tuneable 音 控制 giving variable 提升 or cut of a selected 频率 通常 also with a 控制 to vary the 频带宽度（带宽） 源 - Richard Dobson 1992 A 字典 of 电子 and 算機/计算机 樂/乐 技术 牛津 University Press