1. Digital Audio &
Signal Processing
By Elad Gariany

2. Who Am I?

3. Impulse Tracker

4. Logic Pro

6. The Vidit Family

7. Short Demo

8. Our Technology

9. Our Vision

10. Sound

11. Sound

12. Sound

13. Sound

14. Real World Sound

15. Real World Sound

16. Representing Sound Digitally

17. Sample Rate & Bit Rate

18. Waveform
Single Example (Deep Dive)

19. So… What’s the Problem*
*In a nutshell

20. Clipping

22. Nyquist frequency
Sample Rate Limits

23. Headroom
0-256
Volume
scale!
0-65,536
0-16,777,216

24. World Standards
• PCM: Wave File (8-32Bit / 8000 – 192Khz)
• CD: Audio Disk (16bit / 44.1Khz)
• Pro Audio: (24bit / 192Khz)

25. Understanding Sound

26. Harmonics

27. Pure Tone

28. Fundamental Freq. -Tone

29. Grapher Example
sound sum(1/k*sin(440*k*x),k=1,30)
sound sum(1/(2k-1)*sin(440*(2k-1)*x),k=1,30)
sound sin(3*261.63*x) + sin(3*329.63*x) + sin (3*392.00*x)
sound sum(1/(2k-1)*(sin(440*(2k-1)*x)+sin(2200*(2k-1)*x)),k=1,30)

30. Signal Processing*
*Finally!

31. Amp. VS Freq. (Round 2)
Compressor Delay
Limiter Reverb
Expender Chorus
Gate Saturator

32. Dynamic Range
The Loudness War

33. Vidit Wants You!
• Android Rockstar/Diva
• Video Engineer
• Scale / Backend Expert

34. THANK YOU!
Elad Gariany
Co-Founder of Vidit
elad@vidit.fm
http://www.vidit.fm