character: Dr. Martin
topic: How Amplitude Affects Sound Quality and Loudness
grade: 9
subject: Physics
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character: Professor Soundwave
topic: Understanding Sound Waves and Frequency
grade: 9
subject: Physics
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character: Ms. Echo
topic: The Relationship Between Amplitude and Sound Perception
grade: 9
subject: Physics
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character: Mr. Decibel
topic: Measuring Sound Levels: Decibels and Loudness
grade: 9
subject: Physics
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