1. In each of (a) and (b), the two sine waves (lighter curves) are the components of the complex wave (heavier curve). +3 (a) .01 sec Amplitude +3 (b ) .01 sec -3 A. Give the frequency and amplitude of the sine waves in (a). Frequency Amplitude Higher-frequency component wave Lower-frequency component wave B. Do the same for the waves in (b). Frequency Amplitude Higher-frequency component wave Lower-frequency component waveC. Draw the power spectrum of the complex wave in (a). Amplitude Frequency2. Below is the power spectrum of a naturally occurring periodic wave. 4 Amplitude 3 2 100 200 300 400 500 600 Frequency (Hz) A. What is the fundamental frequency (f0) of the wave represented here? B. What is the amplitude of fo? C. What is the frequency of the second harmonic? Amplitude? 3. Given a complex wave with components of 200 Hz, 400 Hz, and 600 Hz, what is the fundamental frequency of the complex waveform? How do you know?1. Match the spectra (1-5) below to the vocal tract shapes (A-E). All vocal tract shapes are for vowel sounds; one of the vowels is not an English vowel. Note that lip compression and protrusion is lip rounding. 509 1900 1500 2003 2500 3000 3500 4809 4500 500 1809 9 2800 2909 2000 7509 4009 4509 500 1809 1500 1003 1509\f2. Which of the following is a spectrogram of the English word how? high? har? How do you know? State the specific spectral characteristics you used to make your decisions. 9000 HE 4000 HE 4000 HE 2000 HE 1090 H 3. Below is the waveform for the utterance [apa]. Label each portion of the waveform, indicating the corresponding articulatory activity. 0.34 19- -0. 1899- 0.443683 Time [s) 4. Write your own question related to the content that we covered concerning speech acoustics, and answer it