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Praat commands used to calculate the analysis results
TEVA is a Praat script. The commands used to perform the analysis and draw the displays are listed here:
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select Sound SND
To Pitch (cc)... 0 40 15 yes 0.03 0.40 0.045 0.35 0.14 300
There are three options, a low and high pitch cutoff (300 and 600Hz), and a compatible option that implements the settings of Van As 2001
To Pitch (cc)... 0 40 15 no 0.03 0.40 0.01 0.35 0.14 250
select Sound SND
To Spectrogram... 0.1 'Fn' 0.001 10 Gaussian
Fn is the Nyquist frequency
select Sound SND
To Formant (burg)... 0.02 4 4400 0.1 50
select Sound SND
To Spectrum... yes
To Ltas (1-to-1)
select Sound SND
To Intensity... 60 0 yes
select Sound SND
To Harmonicity (cc)... 'dT' 40 0 1.0
dT is the time step. The position of the maximum Harmonicity is determined on a smoothed low-pass filtered contour using 'dT' 40 0 4.5 (low-pass 5Hz and 5Hz transition), not on the highest peak.
select Sound SND
To Pitch... 0 60 600
Count the number of voiced frames in the window and divide by the total number of frames. Using these settings, the step size (frame duration) is 0.0125s.
select Sound SND
Extract part... 'T1' 'T2' rectangular 1.0 false
To Harmonicity (gne)... 500 4500 1000 80
gne = Get maximum
T1 and T2 are the start and end time, respectively
select Sound SND
To Pitch... 0 60 600
To PointProcess
jitter = Get jitter (local)... 'T1' 'T2' 0.0001 0.05 5
T1 and T2 are the start and end time, respectively
select Sound SND
To Pitch... 0 60 600
To PointProcess
select Sound SND
plus PointProcess SND
shimmer = Get shimmer (local)... 'T1' 'T2' 0.0001 0.05 5 5
T1 and T2 are the start and end time, respectively
select Sound SND
To Spectrum... yes
To Ltas (1-to-1)
Get number of bins
Average power over bins. Where lowPower
is the average power over bins between
0 and 500 Hz and highPower
is the average power over bins between 4000 and 5000 Hz
bed = 10 * log10(lowPower / highPower)
select Sound SND
To Spectrum... yes
To Ltas (1-to-1)
Get number of bins
Sum the power (10(power/10)
), sumPower
over the bins and the product of frequency and energy
(f * 10(power/10)
), productFreq
, over all bins.
cog = productFreq / sumPower
select Pitch SND
To PointProcess
To TextGrid (vuv)... 0.2 0.1
Get longest interval with label V
select Formant SND
medianF = Get quantile... 'i' 'T1' 'T2' Hertz 0.50
medianB = Get quantile of bandwidth... 'i' 'T1' 'T2' Hertz 0.50
qf = medianF / medianB
© R.J.J.H. van Son, December 13, 2011