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Oscillator & Oscilloscope, Hearing

Oscillator & Oscilloscope, Hearing. Includes Lab 1 and Lab 3. All student-centered activities Learn about basic devices Required – be able to read the signal properties on the oscilloscope screen After experiment #3 of Lab 1, you can proceed to any experiments in any order

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Oscillator & Oscilloscope, Hearing

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  1. Oscillator & Oscilloscope, Hearing Includes Lab 1 and Lab 3

  2. All student-centered activities Learn about basic devices Required – be able to read the signal properties on the oscilloscope screen After experiment #3 of Lab 1, you can proceed to any experiments in any order Love music? How about Lab 3?

  3. Lab 1: Oscillators & Oscilloscopes • The Oscillator • Using the Oscillator • The Oscilloscope • Using the Oscilloscope • Measuring Amplitude & Period • Pitch and Loudness • Wave Shape • Interesting Things to Do • Lissajous Figures (Optional)

  4. Lab 3: Hearing • Loudness & Pitch • Frequency Range of Hearing • Loudness & Amplitude • Pitch Discrimination • Beats • Difference Tones • Loudness Affects Pitch Perception • Masking • More on Loudness

  5. T T Sine Wave – Periodic Wave A equilibrium Amplitude ( A ): Maximal distance from the equilibrium Period ( T ): Time it takes to complete one oscillation Frequency ( f ): Number of complete oscillations in one second (= 1/T)

  6. A AHI , f TTL HI LO f ALO, f Oscilloscope A ATTL, f CH 1 Oscillator & f counter Oscillator (V, f): Generates electrical signal Speaker / Headphone Frequency counter: Measuresf of electrical signal

  7. Connection between the perception and physical stimuli is an important topic in this course.

  8. Notes to Students • Hearing Damage • Could occur by a large output amplitude from function generator. • Data and Observation • Record numbers and observations directly as they appear on devices • Test Individually • Test of frequency range of hearing is designed to be done individually

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