![]() ![]() "All of these measurements are based on the computation of all %periods by the waveform-matching procedure " NORMAL ( U"The voice report gives five kinds of jitter measurements. "You typically perform jitter measurements only on long sustained vowels. "Use from the #Pulses menu to get the jitter in the selected part. "You will see blue lines that can be thought of as representing the glottal closures. NORMAL ( U"You can measure jitter in the Sound editor window, after choosing from the #Pulses menu. NORMAL ( U"The numbers between parentheses are the total duration of the voice breaks and the duration of the analysed part of the signal, " NORMAL ( U"In the voice report, the degree of voice breaks will be reported like this: ")ĬODE ( U"Degree of voice breaks: 29.529 \\% (1.163061 s / 3.938685 s) ") "and the end of the signal are not considered breaks, you will probably not want to select these silences " "divided by the total duration of the analysed part of the signal (MDVP calls it DVB). NORMAL ( U"This is the total duration of the breaks between the voiced parts of the signal, " "Thus, if the pitch floor is 75 Hz, all inter-pulse intervals longer than 16.6667 milliseconds are regarded as voice breaks. NORMAL ( U"The number of distances between consecutive pulses that are longer than 1.25 divided by the pitch floor. "Naturally, you will not select the leading and trailing silences when measuring this parameter. "a sign of pathology (like a common cold). "have no trouble maintaining voicing during a sustained vowel. NORMAL ( U"The normative value for the fraction of unvoiced frames is 0, i.e., normal healthy voices should " "respectively (in MDVP, these are called NUV and SEG, respectively). NORMAL ( U"The numbers between parentheses are the number of unvoiced frames and the total number of frames, " NORMAL ( U"In the voice report, the fraction of unvoiced frames will be reported as follows: ")ĬODE ( U"Fraction of locally unvoiced frames: 14.000 \\% (14/100) ") "or a local peak below the %%silence threshold% (whose standard value is 0.03). "A frame is regarded as %locally unvoiced if it has a voicing strength below the %%voicing threshold% (whose standard value is 0.45), " This path finder is temporarily switched off to determine the fraction of locally unvoiced frames. NORMAL ( U"The usual pitch analysis contains a %%path finder% that searches for a smooth path through the local " If 86 of these are locally voiced, the Fraction will be 14 percent. "your Sound editor window will contain pitch measurements that are 0.01 seconds apart, so that if you select one second, " NORMAL ( U"This is the fraction of pitch frames that are analysed as unvoiced (MDVP calls it DUV). This can be measured in Praat "ĮNTRY ( U"Fraction of locally unvoiced pitch frames ") "Some pathological voices have trouble with it. INTRO ( U"Normal voices can easily maintain phonation for some time when saying. "The `advanced' pitch settings like #Silence threshold# and #Octave jump cost# can stay at their standard values. "You may also want to choose #Optimize for voice analysis# otherwise, the voice report will complain about possible inaccuracies. 50 \\-200 Hertz for pathological male voices if that is the typical range. "In general, you will want to be careful about the pitch range. NORMAL ( U"The results of the voice measurements will depend on your settings.|Pitch " "(or for the visible part of the whole sound, if there is a cursor instead of a selection or if the selection is not visible). "the results of many voice measurements for the visible part of the selection " NORMAL ( U"The Pulse menu contains the command which will show in the Info window " "The measurement results will also vary slightly when you zoom or scroll. This is because only the visible part of the sound is used for the analysis. You may notice that for some sounds, the time location of the pulses " If your sound is long, you may have to zoom in " "as blue vertical lines through the waveform. ![]() NORMAL ( U"Most of Praat's voice analysis methods start from the glottal pulses that are visible in the window " "which describes the more general features of the window. "To understand this tutorial, you have to be familiar with the " INTRO ( U"This tutorial describes how you can do voice analysis with Praat. ![]() * You should have received a copy of the GNU General Public License * See the GNU General Public License for more details. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * WITHOUT ANY WARRANTY without even the implied warranty of * This code is distributed in the hope that it will be useful, but * the Free Software Foundation either version 2 of the License, or (at * it under the terms of the GNU General Public License as published by * This code is free software you can redistribute it and/or modify ![]()
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