短語詞組短語loudness level contour 等響度曲線圖equal loudness level contour 等響度線;等響曲線loudness -contour selector 響度線選擇器Equl -loudness contour 等響曲線equal loudness contour 等響曲線;[聲]等響曲線Equing -loudness contour 等響曲線Equal -loudness contour 等響曲線;等響線;等響度線lcs loudness contour selector 響度範圍選擇器Equhas -loudness contour 等響曲線 返回 loudness contour