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Definition of spectrum analysis noun from the Oxford Advanced Learner's Dictionary

spectrum analysis

noun
 
/ˈspektrəm ənæləsɪs/
 
/ˈspektrəm ənæləsɪs/
[uncountable, countable] (physics)
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  1. a technique for examining sound, light, vibration, etc., by looking at the different wave frequencies produced
See spectrum analysis in the Oxford Advanced American Dictionary
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