The second task consists of analyzing a group of suspicious audio files (Ex3_sound2.wav, Ex3_sound3.wav: isp Course Work, NUS, Singapore

Task 2

The second task consists of analyzing a group of suspicious audio files (Ex3_sound2.wav, Ex3_sound3.wav, and Ex3_sound4.wav), determining which one contains a four-number secret code. In this case, the spy has used a more sophisticated method. It seems he has used amplitude modulation to ‘move’ the secret code to an ultrasonic range of frequencies then mixed this code with that of the suspicious audio files.

To solve this task, you must create an application in Python (exercise 3.2) that should detect which one of the audio files seems to contain suspicious data in an ultrasonic range of frequencies and should be able to play the secret code in an audible range of frequencies.

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