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交叉调幅测试(The Cross ModulationTest)能提供给录音工程师的功能,类似于摄影师使用测光表,其目的在于帮助他决定拍摄时最适当的曝光条件。摄影师以“视觉”来判断所摄画面的品质;同样,录音工程师以“听觉”来判断所录声音的品质。然而,以观察判断画面或以聆听判断声迹的品质,都属主观的衡量,只是反映观察者或聆听者的评价与意见,更会造成时间的浪费,而且结论也不一定精确。譬如,有位
The Cross Modulation Test provides the recording engineer functionality similar to the photometric meter used by the photographer to help him determine the most appropriate exposure conditions for shooting. Photographers to “visual” to determine the quality of the picture taken; the same, recording engineers to “auditory” to judge the quality of recorded sound. However, judging the picture or judging the quality of the soundtrack by listening is a subjective measure, which only reflects the opinions and comments of observers or listeners. It can also result in the waste of time and the conclusions are not necessarily accurate. For example, there is a bit