Hey, so I have this question Figure 1 shows a short duration segment of a speech waveform that has been sampled at 16,000 samples per second. The x-axis shows sample number, while the y-axis shows amplitude. (i) From the plot, is the speech signal voiced or unvoiced? State your rea- soning. (ii) From the plot, determine the number of samples that make up one period (or cycle) of the waveform. (iii) Hence, compute the pitch period of the waveform in seconds. (iv) Finally, compute the fundamental frequency (or pitch) of the speech sig- nal. (v) Is this likely to come from a male or female talker - explain your reason- ing. So I am not sure with my answers(i am stuck on iii): (i)unvoiced; (ii) 70 samples per second. If i am right, i could say f_s = 70 Hz; (iii) I know the formula to find frequency (f =1/T), which I could use to find T, but is it possible to use it for f_s. if no,how can i find the period? (iv) I want to use formula from sampling theorem f_s = 2f Hz. In this case my fundamental frequency equals to 140Hz. As I said I am not sure of my solutions, so hope you can help me figure that out.