Controlling Fundamental Frequency

Review the information from lecture and then complete the two parts of this activity below

Part 1: Calculate the fundamental frequency or the period of 1 cycle of vibration (using a calculator) based on the information provided on the table below. Complete the empty cells with your numbers.

Period of 1 cycle of vibration Fundamental frequency
7 ms
4 ms
200 Hz
600 Hz

Part 2: Explain the mechanisms for changing the fundamental frequency.

Muscle What happens to the vocal folds? What happens to F0?
Contract cricothyroid
Contract thyromuscularis
Contract thyrovocalis

Sample Solution