HW 01: SPEECH PRODUCTION
- Design a single lossless tube to have resonances starting
at 275 Hz. Plot the frequency response.
- Design a digital filter operating at an 8 kHz sample frequency
to model the frequency response of this tube.
- Using a digital resonator structure, design a digital filter
(operating at 8 kHz) that has resonances at 450 Hz, 1200 Hz,
and 2100 Hz. Plot the frequency response.
- Write a simple speech synthesis program that processes signals
through this filter. Try the following excitation signals:
- white noise with an RMS value of 750 (assuming 16-bit linear
sampling)
- periodic impulse train with amplitude 500 and a frequency of
150 Hz
- An impulse train whose amplitude increases linearly from
250 to 500 for 0.1 secs, and then decreases linearly
to 250 for 0.1 secs.