hlrc / client / python / hlrc_client / textgrid_hlrc.py @ 61d23251
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# Natural Language Toolkit: TextGrid analysis
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#
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# Copyright (C) 2001-2011 NLTK Project
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# Author: Margaret Mitchell <itallow@gmail.com>
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# Steven Bird <sb@csse.unimelb.edu.au> (revisions)
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# URL: <http://www.nltk.org>
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# For license information, see LICENSE.TXT
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#
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"""
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Tools for reading TextGrid files, the format used by Praat.
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Module contents
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===============
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The textgrid corpus reader provides 4 data items and 1 function
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for each textgrid file. For each tier in the file, the reader
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provides 10 data items and 2 functions.
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For the full textgrid file:
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- size
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The number of tiers in the file.
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- xmin
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First marked time of the file.
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- xmax
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Last marked time of the file.
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- t_time
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xmax - xmin.
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- text_type
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The style of TextGrid format:
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- ooTextFile: Organized by tier.
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- ChronTextFile: Organized by time.
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- OldooTextFile: Similar to ooTextFile.
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- to_chron()
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Convert given file to a ChronTextFile format.
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- to_oo()
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Convert given file to an ooTextFile format.
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For each tier:
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- text_type
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The style of TextGrid format, as above.
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- classid
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The style of transcription on this tier:
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- IntervalTier: Transcription is marked as intervals.
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- TextTier: Transcription is marked as single points.
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- nameid
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The name of the tier.
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- xmin
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First marked time of the tier.
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- xmax
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Last marked time of the tier.
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- size
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Number of entries in the tier.
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- transcript
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The raw transcript for the tier.
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- simple_transcript
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The transcript formatted as a list of tuples: (time1, time2, utterance).
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- tier_info
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List of (classid, nameid, xmin, xmax, size, transcript).
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- min_max()
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A tuple of (xmin, xmax).
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- time(non_speech_marker)
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Returns the utterance time of a given tier.
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Excludes entries that begin with a non-speech marker.
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"""
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# needs more cleanup, subclassing, epydoc docstrings
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import sys |
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import re |
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TEXTTIER = "TextTier"
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INTERVALTIER = "IntervalTier"
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OOTEXTFILE = re.compile(r"""(?x)
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xmin\ =\ (.*)[\r\n]+
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xmax\ =\ (.*)[\r\n]+
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[\s\S]+?size\ =\ (.*)[\r\n]+
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""")
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CHRONTEXTFILE = re.compile(r"""(?x)
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[\r\n]+(\S+)\
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(\S+)\ +!\ Time\ domain.\ *[\r\n]+
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(\S+)\ +!\ Number\ of\ tiers.\ *[\r\n]+"
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""")
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OLDOOTEXTFILE = re.compile(r"""(?x)
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[\r\n]+(\S+)
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[\r\n]+(\S+)
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[\r\n]+.+[\r\n]+(\S+)
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""")
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#################################################################
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# TextGrid Class
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#################################################################
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class TextGrid(object): |
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"""
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Class to manipulate the TextGrid format used by Praat.
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Separates each tier within this file into its own Tier
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object. Each TextGrid object has
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a number of tiers (size), xmin, xmax, a text type to help
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with the different styles of TextGrid format, and tiers with their
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own attributes.
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"""
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def __init__(self, read_file): |
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"""
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Takes open read file as input, initializes attributes
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of the TextGrid file.
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@type read_file: An open TextGrid file, mode "r".
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@param size: Number of tiers.
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@param xmin: xmin.
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@param xmax: xmax.
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@param t_time: Total time of TextGrid file.
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@param text_type: TextGrid format.
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@type tiers: A list of tier objects.
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"""
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self.read_file = read_file
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self.size = 0 |
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self.xmin = 0 |
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self.xmax = 0 |
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self.t_time = 0 |
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self.text_type = self._check_type() |
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self.tiers = self._find_tiers() |
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def __iter__(self): |
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for tier in self.tiers: |
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yield tier
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def next(self): |
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if self.idx == (self.size - 1): |
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raise StopIteration |
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self.idx += 1 |
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return self.tiers[self.idx] |
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@staticmethod
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def load(file): |
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"""
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@param file: a file in TextGrid format
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"""
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return TextGrid(open(file).read()) |
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def _load_tiers(self, header): |
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"""
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Iterates over each tier and grabs tier information.
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"""
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tiers = [] |
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if self.text_type == "ChronTextFile": |
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m = re.compile(header) |
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tier_headers = m.findall(self.read_file)
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tier_re = " \d+.?\d* \d+.?\d*[\r\n]+\"[^\"]*\""
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for i in range(0, self.size): |
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tier_info = [tier_headers[i]] + \ |
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re.findall(str(i + 1) + tier_re, self.read_file) |
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tier_info = "\n".join(tier_info)
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tiers.append(Tier(tier_info, self.text_type, self.t_time)) |
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return tiers
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tier_re = header + "\d+[\s\S]+?(?=" + header + "|$$)" |
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m = re.compile(tier_re) |
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tier_iter = m.finditer(self.read_file)
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for iterator in tier_iter: |
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(begin, end) = iterator.span() |
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tier_info = self.read_file[begin:end]
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tiers.append(Tier(tier_info, self.text_type, self.t_time)) |
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return tiers
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def _check_type(self): |
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"""
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Figures out the TextGrid format.
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"""
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m = re.match("(.*)[\r\n](.*)[\r\n](.*)[\r\n](.*)", self.read_file) |
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try:
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type_id = m.group(1).strip()
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except AttributeError: |
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raise TypeError("Cannot read file -- try TextGrid.load()") |
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xmin = m.group(4)
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if type_id == "File type = \"ooTextFile\"": |
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if "xmin" not in xmin: |
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xmin = m.group(3)
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if "xmin" not in xmin: |
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text_type = "OldooTextFile"
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else:
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text_type = "ooTextFile"
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else:
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text_type = "ooTextFile"
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elif type_id == "\"Praat chronological TextGrid text file\"": |
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text_type = "ChronTextFile"
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else:
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raise TypeError("Unknown format '(%s)'", (type_id)) |
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return text_type
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def _find_tiers(self): |
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"""
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Splits the textgrid file into substrings corresponding to tiers.
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"""
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if self.text_type == "ooTextFile": |
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m = OOTEXTFILE |
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header = " *item \["
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elif self.text_type == "ChronTextFile": |
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m = CHRONTEXTFILE |
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header = "\"\S+\" \".*\" \d+\.?\d* \d+\.?\d*"
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elif self.text_type == "OldooTextFile": |
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m = OLDOOTEXTFILE |
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header = "\".*\"[\r\n]+\".*\""
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file_info = m.findall(self.read_file)[0] |
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self.xmin = float(file_info[0]) |
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self.xmax = float(file_info[1]) |
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self.t_time = self.xmax - self.xmin |
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self.size = int(file_info[2]) |
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tiers = self._load_tiers(header)
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return tiers
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def to_chron(self): |
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"""
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@return: String in Chronological TextGrid file format.
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"""
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chron_file = ""
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chron_file += "\"Praat chronological TextGrid text file\"\n"
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chron_file += str(self.xmin) + " " + str(self.xmax) |
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chron_file += " ! Time domain.\n"
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chron_file += str(self.size) + " ! Number of tiers.\n" |
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for tier in self.tiers: |
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idx = (self.tiers.index(tier)) + 1 |
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tier_header = "\"" + tier.classid + "\" \"" \ |
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+ tier.nameid + "\" " + str(tier.xmin) \ |
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+ " " + str(tier.xmax) |
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chron_file += tier_header + "\n"
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transcript = tier.simple_transcript |
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for (xmin, xmax, utt) in transcript: |
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chron_file += str(idx) + " " + str(xmin) |
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chron_file += " " + str(xmax) +"\n" |
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chron_file += "\"" + utt + "\"\n" |
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return chron_file
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def to_oo(self): |
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"""
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@return: A string in OoTextGrid file format.
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"""
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oo_file = ""
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oo_file += "File type = \"ooTextFile\"\n"
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oo_file += "Object class = \"TextGrid\"\n\n"
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oo_file += "xmin = ", self.xmin, "\n" |
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oo_file += "xmax = ", self.xmax, "\n" |
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oo_file += "tiers? <exists>\n"
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oo_file += "size = ", self.size, "\n" |
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oo_file += "item []:\n"
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for i in range(len(self.tiers)): |
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oo_file += "%4s%s [%s]" % ("", "item", i + 1) |
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_curr_tier = self.tiers[i]
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for (x, y) in _curr_tier.header: |
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oo_file += "%8s%s = \"%s\"" % ("", x, y) |
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if _curr_tier.classid != TEXTTIER:
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for (xmin, xmax, text) in _curr_tier.simple_transcript: |
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oo_file += "%12s%s = %s" % ("", "xmin", xmin) |
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oo_file += "%12s%s = %s" % ("", "xmax", xmax) |
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oo_file += "%12s%s = \"%s\"" % ("", "text", text) |
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else:
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for (time, mark) in _curr_tier.simple_transcript: |
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oo_file += "%12s%s = %s" % ("", "time", time) |
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oo_file += "%12s%s = %s" % ("", "mark", mark) |
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return oo_file
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#################################################################
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# Tier Class
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#################################################################
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class Tier(object): |
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"""
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A container for each tier.
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"""
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def __init__(self, tier, text_type, t_time): |
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"""
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Initializes attributes of the tier: class, name, xmin, xmax
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size, transcript, total time.
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Utilizes text_type to guide how to parse the file.
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@type tier: a tier object; single item in the TextGrid list.
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@param text_type: TextGrid format
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@param t_time: Total time of TextGrid file.
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@param classid: Type of tier (point or interval).
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@param nameid: Name of tier.
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@param xmin: xmin of the tier.
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@param xmax: xmax of the tier.
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@param size: Number of entries in the tier
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@param transcript: The raw transcript for the tier.
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"""
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self.tier = tier
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self.text_type = text_type
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self.t_time = t_time
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self.classid = "" |
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self.nameid = "" |
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self.xmin = 0 |
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self.xmax = 0 |
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self.size = 0 |
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self.transcript = "" |
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self.tier_info = "" |
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self._make_info()
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self.simple_transcript = self.make_simple_transcript() |
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if self.classid != TEXTTIER: |
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self.mark_type = "intervals" |
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else:
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self.mark_type = "points" |
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self.header = [("class", self.classid), ("name", self.nameid), \ |
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("xmin", self.xmin), ("xmax", self.xmax), ("size", self.size)] |
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def __iter__(self): |
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return self |
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def _make_info(self): |
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"""
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Figures out most attributes of the tier object:
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class, name, xmin, xmax, transcript.
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"""
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trans = "([\S\s]*)"
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if self.text_type == "ChronTextFile": |
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classid = "\"(.*)\" +"
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nameid = "\"(.*)\" +"
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xmin = "(\d+\.?\d*) +"
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xmax = "(\d+\.?\d*) *[\r\n]+"
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# No size values are given in the Chronological Text File format.
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self.size = None |
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size = ""
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elif self.text_type == "ooTextFile": |
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classid = " *class = \"(.*)\" *[\r\n]+"
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nameid = " *name = \"(.*)\" *[\r\n]+"
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xmin = " *xmin = (\d+\.?\d*) *[\r\n]+"
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xmax = " *xmax = (\d+\.?\d*) *[\r\n]+"
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size = " *\S+: size = (\d+) *[\r\n]+"
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elif self.text_type == "OldooTextFile": |
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classid = "\"(.*)\" *[\r\n]+"
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nameid = "\"(.*)\" *[\r\n]+"
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xmin = "(\d+\.?\d*) *[\r\n]+"
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xmax = "(\d+\.?\d*) *[\r\n]+"
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size = "(\d+) *[\r\n]+"
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m = re.compile(classid + nameid + xmin + xmax + size + trans) |
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self.tier_info = m.findall(self.tier)[0] |
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self.classid = self.tier_info[0] |
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self.nameid = self.tier_info[1] |
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self.xmin = float(self.tier_info[2]) |
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self.xmax = float(self.tier_info[3]) |
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if self.size != None: |
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self.size = int(self.tier_info[4]) |
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self.transcript = self.tier_info[-1] |
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def make_simple_transcript(self): |
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"""
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@return: Transcript of the tier, in form [(start_time end_time label)]
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"""
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if self.text_type == "ChronTextFile": |
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trans_head = ""
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trans_xmin = " (\S+)"
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trans_xmax = " (\S+)[\r\n]+"
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trans_text = "\"([\S\s]*?)\""
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elif self.text_type == "ooTextFile": |
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trans_head = " *\S+ \[\d+\]: *[\r\n]+"
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trans_xmin = " *\S+ = (\S+) *[\r\n]+"
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trans_xmax = " *\S+ = (\S+) *[\r\n]+"
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trans_text = " *\S+ = \"([^\"]*?)\""
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elif self.text_type == "OldooTextFile": |
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trans_head = ""
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trans_xmin = "(.*)[\r\n]+"
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trans_xmax = "(.*)[\r\n]+"
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trans_text = "\"([\S\s]*?)\""
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if self.classid == TEXTTIER: |
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trans_xmin = ""
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trans_m = re.compile(trans_head + trans_xmin + trans_xmax + trans_text) |
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self.simple_transcript = trans_m.findall(self.transcript) |
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return self.simple_transcript |
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def transcript(self): |
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"""
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@return: Transcript of the tier, as it appears in the file.
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"""
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return self.transcript |
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def time(self, non_speech_char="."): |
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"""
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@return: Utterance time of a given tier.
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Screens out entries that begin with a non-speech marker.
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"""
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total = 0.0
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if self.classid != TEXTTIER: |
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for (time1, time2, utt) in self.simple_transcript: |
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utt = utt.strip() |
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if utt and not utt[0] == ".": |
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total += (float(time2) - float(time1)) |
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return total
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def tier_name(self): |
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"""
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@return: Tier name of a given tier.
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"""
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return self.nameid |
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def classid(self): |
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"""
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@return: Type of transcription on tier.
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"""
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return self.classid |
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def min_max(self): |
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"""
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@return: (xmin, xmax) tuple for a given tier.
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"""
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return (self.xmin, self.xmax) |
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def __repr__(self): |
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return "<%s \"%s\" (%.2f, %.2f) %.2f%%>" % (self.classid, self.nameid, self.xmin, self.xmax, 100*self.time()/self.t_time) |
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def __str__(self): |
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return self.__repr__() + "\n " + "\n ".join(" ".join(row) for row in self.simple_transcript) |
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|
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def demo_TextGrid(demo_data): |
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print "** Demo of the TextGrid class. **" |
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fid = TextGrid(demo_data) |
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print "Tiers:", fid.size |
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for i, tier in enumerate(fid): |
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print "\n***" |
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print "Tier:", i + 1 |
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print tier
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def demo(): |
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# Each demo demonstrates different TextGrid formats.
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print "Format 1" |
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demo_TextGrid(demo_data1) |
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print "\nFormat 2" |
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demo_TextGrid(demo_data2) |
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print "\nFormat 3" |
| 471 |
demo_TextGrid(demo_data3) |
| 472 |
|
| 473 |
|
| 474 |
demo_data1 = """File type = "ooTextFile"
|
| 475 |
Object class = "TextGrid"
|
| 476 |
|
| 477 |
xmin = 0
|
| 478 |
xmax = 2045.144149659864
|
| 479 |
tiers? <exists>
|
| 480 |
size = 3
|
| 481 |
item []:
|
| 482 |
item [1]:
|
| 483 |
class = "IntervalTier"
|
| 484 |
name = "utterances"
|
| 485 |
xmin = 0
|
| 486 |
xmax = 2045.144149659864
|
| 487 |
intervals: size = 5
|
| 488 |
intervals [1]:
|
| 489 |
xmin = 0
|
| 490 |
xmax = 2041.4217474125382
|
| 491 |
text = ""
|
| 492 |
intervals [2]:
|
| 493 |
xmin = 2041.4217474125382
|
| 494 |
xmax = 2041.968276643991
|
| 495 |
text = "this"
|
| 496 |
intervals [3]:
|
| 497 |
xmin = 2041.968276643991
|
| 498 |
xmax = 2042.5281632653062
|
| 499 |
text = "is"
|
| 500 |
intervals [4]:
|
| 501 |
xmin = 2042.5281632653062
|
| 502 |
xmax = 2044.0487352585324
|
| 503 |
text = "a"
|
| 504 |
intervals [5]:
|
| 505 |
xmin = 2044.0487352585324
|
| 506 |
xmax = 2045.144149659864
|
| 507 |
text = "demo"
|
| 508 |
item [2]:
|
| 509 |
class = "TextTier"
|
| 510 |
name = "notes"
|
| 511 |
xmin = 0
|
| 512 |
xmax = 2045.144149659864
|
| 513 |
points: size = 3
|
| 514 |
points [1]:
|
| 515 |
time = 2041.4217474125382
|
| 516 |
mark = ".begin_demo"
|
| 517 |
points [2]:
|
| 518 |
time = 2043.8338291031832
|
| 519 |
mark = "voice gets quiet here"
|
| 520 |
points [3]:
|
| 521 |
time = 2045.144149659864
|
| 522 |
mark = ".end_demo"
|
| 523 |
item [3]:
|
| 524 |
class = "IntervalTier"
|
| 525 |
name = "phones"
|
| 526 |
xmin = 0
|
| 527 |
xmax = 2045.144149659864
|
| 528 |
intervals: size = 12
|
| 529 |
intervals [1]:
|
| 530 |
xmin = 0
|
| 531 |
xmax = 2041.4217474125382
|
| 532 |
text = ""
|
| 533 |
intervals [2]:
|
| 534 |
xmin = 2041.4217474125382
|
| 535 |
xmax = 2041.5438290324326
|
| 536 |
text = "D"
|
| 537 |
intervals [3]:
|
| 538 |
xmin = 2041.5438290324326
|
| 539 |
xmax = 2041.7321032910372
|
| 540 |
text = "I"
|
| 541 |
intervals [4]:
|
| 542 |
xmin = 2041.7321032910372
|
| 543 |
xmax = 2041.968276643991
|
| 544 |
text = "s"
|
| 545 |
intervals [5]:
|
| 546 |
xmin = 2041.968276643991
|
| 547 |
xmax = 2042.232189031843
|
| 548 |
text = "I"
|
| 549 |
intervals [6]:
|
| 550 |
xmin = 2042.232189031843
|
| 551 |
xmax = 2042.5281632653062
|
| 552 |
text = "z"
|
| 553 |
intervals [7]:
|
| 554 |
xmin = 2042.5281632653062
|
| 555 |
xmax = 2044.0487352585324
|
| 556 |
text = "eI"
|
| 557 |
intervals [8]:
|
| 558 |
xmin = 2044.0487352585324
|
| 559 |
xmax = 2044.2487352585324
|
| 560 |
text = "dc"
|
| 561 |
intervals [9]:
|
| 562 |
xmin = 2044.2487352585324
|
| 563 |
xmax = 2044.3102321849011
|
| 564 |
text = "d"
|
| 565 |
intervals [10]:
|
| 566 |
xmin = 2044.3102321849011
|
| 567 |
xmax = 2044.5748932104329
|
| 568 |
text = "E"
|
| 569 |
intervals [11]:
|
| 570 |
xmin = 2044.5748932104329
|
| 571 |
xmax = 2044.8329108578437
|
| 572 |
text = "m"
|
| 573 |
intervals [12]:
|
| 574 |
xmin = 2044.8329108578437
|
| 575 |
xmax = 2045.144149659864
|
| 576 |
text = "oU"
|
| 577 |
"""
|
| 578 |
|
| 579 |
demo_data2 = """File type = "ooTextFile"
|
| 580 |
Object class = "TextGrid"
|
| 581 |
|
| 582 |
0
|
| 583 |
2.8
|
| 584 |
<exists>
|
| 585 |
2
|
| 586 |
"IntervalTier"
|
| 587 |
"utterances"
|
| 588 |
0
|
| 589 |
2.8
|
| 590 |
3
|
| 591 |
0
|
| 592 |
1.6229213249309031
|
| 593 |
""
|
| 594 |
1.6229213249309031
|
| 595 |
2.341428074708195
|
| 596 |
"demo"
|
| 597 |
2.341428074708195
|
| 598 |
2.8
|
| 599 |
""
|
| 600 |
"IntervalTier"
|
| 601 |
"phones"
|
| 602 |
0
|
| 603 |
2.8
|
| 604 |
6
|
| 605 |
0
|
| 606 |
1.6229213249309031
|
| 607 |
""
|
| 608 |
1.6229213249309031
|
| 609 |
1.6428291382019483
|
| 610 |
"dc"
|
| 611 |
1.6428291382019483
|
| 612 |
1.65372183721983721
|
| 613 |
"d"
|
| 614 |
1.65372183721983721
|
| 615 |
1.94372874328943728
|
| 616 |
"E"
|
| 617 |
1.94372874328943728
|
| 618 |
2.13821938291038210
|
| 619 |
"m"
|
| 620 |
2.13821938291038210
|
| 621 |
2.341428074708195
|
| 622 |
"oU"
|
| 623 |
2.341428074708195
|
| 624 |
2.8
|
| 625 |
""
|
| 626 |
"""
|
| 627 |
|
| 628 |
demo_data3 = """"Praat chronological TextGrid text file"
|
| 629 |
0 2.8 ! Time domain.
|
| 630 |
2 ! Number of tiers.
|
| 631 |
"IntervalTier" "utterances" 0 2.8
|
| 632 |
"IntervalTier" "utterances" 0 2.8
|
| 633 |
1 0 1.6229213249309031
|
| 634 |
""
|
| 635 |
2 0 1.6229213249309031
|
| 636 |
""
|
| 637 |
2 1.6229213249309031 1.6428291382019483
|
| 638 |
"dc"
|
| 639 |
2 1.6428291382019483 1.65372183721983721
|
| 640 |
"d"
|
| 641 |
2 1.65372183721983721 1.94372874328943728
|
| 642 |
"E"
|
| 643 |
2 1.94372874328943728 2.13821938291038210
|
| 644 |
"m"
|
| 645 |
2 2.13821938291038210 2.341428074708195
|
| 646 |
"oU"
|
| 647 |
1 1.6229213249309031 2.341428074708195
|
| 648 |
"demo"
|
| 649 |
1 2.341428074708195 2.8
|
| 650 |
""
|
| 651 |
2 2.341428074708195 2.8
|
| 652 |
""
|
| 653 |
"""
|
| 654 |
|
| 655 |
if __name__ == "__main__": |
| 656 |
demo() |
| 657 |
|