Homework 4
Book problems: 6.24, 6.28 a, b, (Required to be turned in)
Matlab: (Needs to be turned in separately)
In this problem you have been provided a speech file sampled at 8 kHz (corrupted_speech.mat). However, it has been corrupted using two tones, i.e two sinusoids of two different frequencies, and so the speech content is not recognizable on playback. Your job is to use filtering techniques to eliminate these two tone frequencies and recognize the content of the speech file. The following steps will be helpful for this purpose.
1. Identify the frequencies of the tones corrupting the speech.
2. Design a filter/approach to eliminate the tones and recover the speech.
3. Identify the contents of the original speech file.
For every step, document and support your approach. Provide plots as needed with explanation and include the code written to accomplish the task in your report.