character: Ms. Harmony
topic: The Role of Frequency in Sound Perception
grade: 9
subject: Physics
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character: Mr. Soundwave
topic: Understanding Waves and Frequencies
grade: 9
subject: Physics
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character: Dr. Acoustics
topic: How Frequency Affects Pitch
grade: 9
subject: Physics
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character: Professor Audio
topic: The Science of Sound and Hearing
grade: 9
subject: Physics
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