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Is There An Echo In Here? Signal Analysis for Ops

Noah Kantrowitz
May 06, 2014
Programming
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95

Is There An Echo In Here? Signal Analysis for Ops

Noah Kantrowitz

May 06, 2014
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Transcript

  1. Signal Analysis for Ops Is There An Echo In Here?

    Noah Kantrowitz

  2. MATH AHEAD

  3. This is a Metric

  4. Value @ Time

  5. None

  6. metric.wav

  7. None
  8. None

  9. Frequency Domain

  10. Frequency 0hz 20Hz

  11. Value +0dB +50dB

  12. Fourier Transform

  13. ˆ f ( ⇠ ) = Z 1 1 f

    ( x ) e 2 ⇡ix⇠ dx
  14. None
  15. None
  16. None
  17. None

  18. 1Hz 4 Hz/2 10 Hz/4 16 Hz/4 2 Hz/10

  19. None

  20. ˆ f ( ⇠ ) = Z 1 1 f

    ( x ) e 2 ⇡ix⇠ dx

  21. DFT DTFT

  22. Xk = N 1 X n=0 xne 2⇡i N nk

  23. FFT

  24. IFT

  25. Low-pass

  26. None
  27. None
  28. None
  29. None

  30. High-pass Band-pass

  31. Windowing

  32. None
  33. None
  34. None
  35. None
  36. None
  37. None
  38. None
  39. None
  40. None

  41. NumPy

  42. FFTW

  43. go-dsp

  44. Ruby

  45. Go forth and find the signal

  46. Thank You

  47. Bonus Round

  48. DCT

  49. Wavelets

  50. Noise Gate

  51. None

  52. Hysteresis

  53. Control Theory

  54. PID Control

  55. Thank You