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# 6.5: Questions

1. Describe the overall differences in character between the three vowel sounds.

2. Based on the frequency measurements, estimate the main frequency range of human speech. How does this compare with the frequency range of whistling?

3. Of the sounds tested in the Tables, which appears the most like a pure sine wave?

4. How much pitch range variation is there between the group members? What do you suppose might cause this variation?