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stem/Speech/Speech Processing/Source-Filter.md
Andy Pack f29c435494 vault backup: 2023-12-27 22:38:55 
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speech

File:Source-filter model diagram.svg

Source

Excitation Signal

  • Voiced
    • Periodic impulse train
    • Quasi-periodic glottal pulses
  • Unvoiced
    • White noise
    • Broad-band noise
    • Typically Gaussian

Filter

  • Time-varying linear filter
  • Poles & zeroes
    • All-pole for LP

Speech is a convolution of the two (in t)