Praat Script Syllable Nuclei

###########################################################################

# #

# Praat Script Syllable Nuclei #

# #

# This program is free software: you can redistribute it and/or modify #

# it under the terms of the GNU General Public License as published by #

# the Free Software Foundation, either version 3 of the License, or #

# (at your option) any later version. #

# #

# This program is distributed in the hope that it will be useful, #

# but WITHOUT ANY WARRANTY; without even the implied warranty of #

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #

# GNU General Public License for more details. #

# #

# You should have received a copy of the GNU General Public License #

# along with this program. If not, see http://www.gnu.org/licenses/ #

# #

###########################################################################

# updated 09.17.2010 by Nivja de Jong, Hugo Quené, Ingrid Persoon

# + adapted to also run on MAC-computers

# + refer to objects by unique identifier, not by name

# + keep track of all created intermediate objects, select these explicitly,

# then Remove

# + programming of checking loop for mindip adjusted

###########################################################################

# counts syllables of all sound utterances in a directory

# NB unstressed syllables are sometimes overlooked

# NB filter sounds that are quite noisy beforehand

# NB use Ignorance Level/Intensity Median (dB) = 0 for unfiltered sounds,

# use 2 for filtered sounds

# NB use Minimum dip between peaks (dB) = 2 for unfiltered sounds,

# use 4 for filtered sounds

form Counting Syllables in Sound Utterances

real Ignorance_Level/Intensity_Median_(dB) 0 or 2

real Minimum_dip_between_peaks_(dB) 2 or 4

boolean display_name yes

sentence directory C:/directorywithsoundfiles

endform

# shorten variables

iglevel = 'ignorance_Level/Intensity_Median'

mindip = 'minimum_dip_between_peaks'

Create Strings as file list... list 'directory$'/*.wav

numberOfFiles = Get number of strings

for ifile to numberOfFiles

select Strings list

fileName$ = Get string... ifile

Read from file... 'directory$'/'fileName$'

obj$ = selected$("Sound")

soundid = selected("Sound")

originaldur = Get total duration

Subtract mean

# Use intensity to get threshold

To Intensity... 50 0 yes

intid = selected("Intensity")

start = Get time from frame number... 1

nframes = Get number of frames

end = Get time from frame number... 'nframes'

# estimate noise floor

minint = Get minimum... 0 0 Parabolic

# estimate noise max

maxint = Get maximum... 0 0 Parabolic

#get median of Intensity: limits influence of high peaks

medint = Get quantile... 0 0 0.5

# estimate Intensity threshold

threshold = medint + iglevel

if threshold < minint

threshold = minint

endif

Down to Matrix

matid = selected("Matrix")

# Convert intensity to sound

To Sound (slice)... 1

sndintid = selected("Sound")

intdur = Get finishing time

intmax = Get maximum... 0 0 Parabolic

# estimate peak positions (all peaks)

To PointProcess (extrema)... Left yes no Sinc70

ppid = selected("PointProcess")

numpeaks = Get number of points

# fill array with time points

for i from 1 to numpeaks

t'i' = Get time from index... 'i'

endfor

# fill array with intensity values

select 'sndintid'

peakcount = 0

for i from 1 to numpeaks

value = Get value at time... t'i' Cubic

if value > threshold

peakcount += 1

int'peakcount' = value

timepeaks'peakcount' = t'i'

endif

endfor

# fill array with valid peaks: only intensity values if preceding

# dip in intensity is greater than mindip

select 'intid'

validpeakcount = 0

precedingtime = timepeaks1

precedingint = int1

for p to peakcount-1

following = p + 1

followingtime = timepeaks'following'

dip = Get minimum... 'precedingtime' 'followingtime' None

diffint = abs(precedingint - dip)

if diffint > mindip

validpeakcount += 1

validtime'validpeakcount' = timepeaks'p'

endif

precedingtime = timepeaks'following'

precedingint = Get value at time... timepeaks'following' Cubic

endfor

# Look for only voiced parts

select 'soundid'

To Pitch (ac)... 0.02 30 4 no 0.03 0.25 0.01 0.35 0.25 450

pitchid = selected("Pitch")

voicedcount = 0

for i from 1 to validpeakcount

querytime = validtime'i'

value = Get value at time... 'querytime' Hertz Linear

if value <> undefined

voicedcount = voicedcount + 1

voicedpeak'voicedcount' = validtime'i'

endif

endfor

# calculate time correction due to shift in time for Sound object versus

# intensity object

timecorrection = originaldur/intdur

# Insert voiced peaks in second Tier

select 'soundid'

To TextGrid... "syllables" syllables

textgridid = selected("TextGrid")

for i from 1 to voicedcount

position = voicedpeak'i' * timecorrection

Insert point... 1 position 'i'

endfor

# write textgrid to textfile

Write to text file... 'directory$'/'obj$'.syllables.TextGrid

# clean up before next sound file is opened

select 'intid'

plus 'matid'

plus 'ppid'

plus 'sndintid'

plus 'soundid'

plus 'textgridid'

plus 'pitchid'

Remove

endfor