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How to use MATLAB program for digital signal processing?. [I213 Discrete Signal Processing] MATLAB. Sungmoon Jeong jeongsm@jaist.ac.jp Robotics Laboratory, School of Information Science, Japan Advanced Institute of Science and Technology Jan. 6 th , 2014. small REPORT using MATLAB.

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How to use MATLAB program for digital signal processing?

[I213 Discrete Signal Processing]

MATLAB

SungmoonJeong

jeongsm@jaist.ac.jp

Robotics Laboratory, School of Information Science,

Japan Advanced Institute of Science and Technology

Jan. 6th, 2014

small report using matlab
smallREPORT using MATLAB
  • Speech signal processing based on convolution (classifying voiced and unvoiced)
    • Short-time energy contour, Hamming windows
    • Average magnitude contour, rectangular windows
    • Average zero-crossing rate contour
    • Pitch contour (applying filter for smoothing)
    • Pitch (period) Detection: Cepstrum, Autocorrelation and AMDF
    • Narrowband/wideband Spectogram (Short Time Fourier Transform)
    • Fundamental frequency contour
    • MFCC (Mel Frequency CepstralCoefficients)
short time energy contour hamming windows
Short-time energy contour, Hamming windows

Short-time energy contour

Hamming windows

  • Record your voice: “Hello, my name is ……”
  • Plot the hamming windows with 125 window length
  • Plot the voice signal and short-time energy contour
average magnitude contour rectangular windows
Average magnitude contour, rectangular windows

Average magnitude contour

rectangular windows

  • Record your voice: “Hello, my name is ……”
  • Plot the rectangular windows with 125 window length
  • What is effect of window type and length?
  • Plot the voice signal and short-time energy contour
average zero crossing rate contour
Average zero-crossing rate contour

Average zero-crossing rate contour

windows

  • Record your voice: “Hello, my name is ……”
  • Plot the windows with 125 length
  • Plot the voice signal and short-time energy contour