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file_trimmer.praat
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file_trimmer.praat
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#######################################################################
# File Trimmer Script
#######################################################################
# This script trims a file to 50ms on either side of a marked interval
# Each vowel is saved as an individual Praat
# sound file with the name of the original file plus the interval
# label.
#
# Input: Sound files with associated TextGrids
# - TextGrids should have labels for relevant intervals (i.e.,
# intervals to be chunked).
# Output: Individual sound files named according to the original file and
# the interval label.
# Process: The script asks for a directory in which to look for files, a tier
# by which to segment, and an input sound file type. It then looks
# for soundfiles of the specified type with associated TextGrids in
# the specified folder. For each soundfile, it locates marked
# intervals in the specifed tier one-by-one. Each labeled interval
# (plus 25 ms before and after it) is saved as a new .wav file and
# a new text grid. After all intervals in all files in the specified
# directory have been segmented, a finish message appears.
#######################################################################
form Chopping long sound files
comment Specify which tier in the TextGrid you want to segment by:
integer tier_number 1
comment Sound file extension:
optionmenu file_type: 2
option .aiff
option .wav
comment Replace surrounding 50ms with silence?
boolean silence yes
comment Filename base (soundfile name if left blank)
word namebase
endform
directory$ = chooseDirectory$ ("Choose the directory containing sound files and textgrids")
directory$ = "'directory$'" + "/"
out_dir$ = directory$
clearinfo
Create Strings as file list... list 'directory$'*'file_type$'
number_of_files = Get number of strings
# Starting from here, add everything that should be repeated for each sound file
for j from 1 to number_of_files
select Strings list
filename$ = Get string... 'j'
Read from file... 'directory$''filename$'
soundname$ = selected$ ("Sound")
gridfile$ = "'directory$''soundname$'.TextGrid"
if fileReadable (gridfile$)
Read from file... 'gridfile$'
select TextGrid 'soundname$'
number_of_intervals = Get number of intervals... 'tier_number'
# Go through all intervals in the file
for k from 1 to number_of_intervals
select TextGrid 'soundname$'
seg_label$ = Get label of interval... 'tier_number' 'k'
if seg_label$ <> ""
seg_start = Get starting point... 'tier_number' 'k'
seg_end = Get end point... 'tier_number' 'k'
select Sound 'soundname$'
seg_start_z = Get nearest zero crossing... 1 seg_start
seg_end_z = Get nearest zero crossing... 1 seg_end
if silence
Create Sound from formula: "startsilence", 1, 0, 0.05, 44100, "0"
select Sound 'soundname$'
Extract part: seg_start_z, seg_end_z, "rectangular", 1, "no"
Create Sound from formula: "endsilence", 1, 0, 0.05, 44100, "0"
select Sound startsilence
plus Sound 'soundname$'
plus Sound endsilence
Concatenate
else
start = seg_start_z - 0.050
end = seg_end_z + 0.050
Extract part: start, end, "rectangular", 1, "no"
endif
if namebase$ <> ""
out_filename$ = "'out_dir$''namebase$'_'seg_label$'"
else
out_filename$ = "'out_dir$''soundname$'"
endif
name$ = "'out_filename$'_trim"
Write to WAV file... 'name$'.wav
select TextGrid 'soundname$'
if silence
Extract part... seg_start_z seg_end_z no
Extend time: 0.05, "Start"
Extend time: 0.05, "End"
else
Extract part... 'start' 'end' no
endif
Write to text file... 'name$'.TextGrid
endif
endfor
select all
minus Strings list
Remove
endif
endfor
select all
Remove
print All files have been trimmed.