摘自@NanNan大佬的Potplayer 安装 LAV Filters 改善播放体验与质量
主要讲LAV的音频解码LAV Audio Configuration中的Mixing 选项卡,这里是主要需要设置的的内容。
Mixing 控制的是声道的混音和再分配,首先勾选 Enable Mixing 来启用混音器,在其下方是输出声道的选项,一般都是 Stereo,如果是多声道的话请根据实际选择。再下来是混音器的设置,Center Mix Level(中央声道混音补偿)与 Surround Mix Level(环绕声道混音补偿)依照ITU(国际电信联盟)所发表的BS.775 建议书,5.1 / 7.1 声道 向下混音至 立体声/双声道 推荐设定,将中央声道及环绕声道降3dB后混音至左右声道,降 3dB 约为 电压增益 0.71,故将 Center Mix Level 和 Surround Mix Level 设成 0.71 。至于 LFE(低音增强),建议书中是将它设定在 1.58,不过这是在专业音响环境下测试出来的,普通的扬声器完全无法表现这么强的低频信号,将其设置的太高甚至有可能盖过高频部分影响整体听感,所以一般不建议设置为超过 1.2 的值,具体的数值请自行测试后决定,如果觉得 LFE 开和不开都没有区别也可以直接调成 0,关掉这个功能。
最后来到右边,Clipping Protection 是破音保护功能,可以关闭来避免动态压缩破坏音质,不过如果关闭后扬声器频繁破音的话请保持开启。完成设置后的样子如下图:
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