HW 08: DIFFERENTIATION

1. Record your voice at an 8 kHz sample frequency for the words "tip" and "tap". Generate Fourier transform-based filter bank coefficients using an FFT of length 256 points and a frame duration of 10 msec. Average every 16 points to produce a feature vector of length 16. Normalize the energy of each frame so that each windowed signal has an energy value of 1.0.
   
   
2. Generate derivatives of these coefficients using the finite difference method and the linear regression method. Compare and contrast the results for the both vowel and consonant portions of the above utterance.
   
   
3. Repeat the previous parts using the phrase "We were away". Do your conclusions still hold true for this utterance? Why?