1. In The Name of God The Compassionate The Merciful

2. Wavelet applications for Larynx Disorders Diagnosis

3. Introduction What is Larynx?

4. Speech How do we speak? Speaking is made up of two mechanical actions called Phonation and Articulation

5. Common Larynx Disorders  Muscle Tension Dysphonia (MTD)  Vocal Tremor  Vocal Fold Paralysis

6. Other Common Disorders  Laryngeal Cancer  Edema  Nodules  Polyp

7. Voice Characteristics  Amplitude  Frequency  Energy  Entropy  Fractal Dimension

8. Amplitude Maximum amplitude to Minimum amplitude ratio

9. Energy Total Energy Energy in Frames

10. Energy Application Total Energy Noise Test Signal to Noise Ratio( Future Use) Energy in Frames Recording Environment Characteristics

11. Entropy  Shannon Entropy  p-Norm Entropy  log-Energy Entropy ✓

12. Fractal Dimension N ∆ is the number of times the signal sign is changed.

13. Signal The main signal is a 3-second.wav file in which the user simply says “a”

14. Basic Process 1- Chopping the Signal between two points 2- Segmenting the Chopped Signal

15. FIR Filters x(n) y(n) Z-1Z-1 Z-1Z-1 Z-1Z-1 gain x(n-1)x(n-k) x(n-(N-1)) a0a0 akak a1a1 a N-1 +++

16. Filters Coefficients MATLAB Coefficients for db4 Simply Type: fname=‘db4’; LP=dbwavf(fname) HP(k)=(-1) k ×LP(K-1-k) WLP(k)=LP(K-1-k) WHP(k)=HP(K-1-k)

17. Wavelets What are Wavelets? Wavelets are mathematical functions that cut up data into different frequency components, and then study each component with a resolution matched to its scale.

18. Wavelet Packets Wavelet packets are particular linear combinations of wavelets.

19. Applied Wavelet Packet Input Signal DownSample LPF HPFLPF HPF LPF

20. Feature Extraction Energy Entropy Fractal Dimension

21. Applied Wavelet Packet Input Signal DownSample LPF HPF LPF HPF

22. Best Features Vectors 0 to 3132 to 47484950 Members 0 to 31 Band 6 Entropy Members 16 to 31 Band 5 Entropy Total Fractal Dimension First Band, Branch 0 Fractal Dimension First Band, Branch 1 Fractal Dimension

23. Diagnosis Block W and B are generated from Genetic Algorithm methods

24. Test Program (Normal)

25. Test Program (Pathologic)