MASER
Introduction to Spectral Analysis
Phil Lockett
Centre College
KAPT meeting March 16, 2013Any Time Signal can be represented by
Sums of Cosines and SinesThe signal can be represented in either
theTime Domain
orFrequency Domain
Time DomainFrequency Domain3
PRAAT
Spectrogram is the Frequency Spectrum as a function of Time
TimeFrequency
Chirp
Tuning Fork Time Signal
Tuning Fork Frequency Spectrum465.82 1/s931.65 1/s
0.12time (sec)10kHzdBnV
time (sec)0.12AEP
Sound input (nuthatch quank)Spectrogram of AEP
Jeff Lucas - Purdue9
[A][i][u]
11
Vowel Formant Average Spectrograms12
Me saying ee
Vocal Fold Harmonics:1 127.2 Hz2 254.4 Hzskip to20 2544 HzPower
Spectrum for ee
eeah
schwa[]orThe VowelUse schwa Frequencies to measure Vocal Tract
Length
By Modeling Vocal Tract as Uniform Tube
