This presentation covers the topic with reference to Fourier Transforms. It also discusses the applications of the topic in daily life and modern technology.

2. Speech Signal Processing
Fast Fourier Transform
Discrete Cosine Transform
Discrete Tchebichef Transform

3. Time Domain to Frequency Domain
Frequency Domain to Time Domain (Inverse)

8. Removes unwanted frequencies
 Windowing (windows)

10. Recognition of Male & Female Voice
Voice lock

11.  Voice Changer
 Silence Detector
 Audio Filters
 Noise Reduction