Exercise 4

Download the UCL Speech Filing System from here, and do the following exercises:  

1.      Generate 4 kHz white-noise, and display its waveform, wideband and narrowband spectrograms.

 

2.      Record a segment of speech or open a speech file, and then

a.       Display its waveform, wideband and narrowband spectrograms, source spectrum and filter response.  (Hint: Tools - Speech - Display - Cross-section)

b.      Down-sample the signal to 2 kHz and listen to it.

c.       Estimate pitch of the original speech signal.

d.      Add pink noise to the original speech signal and save the generated signal as a .wav file.