12/3/2023 0 Comments Praat script duration manipulationSuppose, for instance, that you have a 355-ms piece of sound, and you want to shorten the first 85 ms to 70 ms, and the remaining 270 ms to 200 ms. If you know exactly the times and relative durations, it is advisable to write a script (see Scripting). Manipulation of pitch), the modified sound will be based on the modified duration and pitch. If you modify the pitch curve as well (see Intro 8.1. To get the modified sound as a separate object, choose Publish resynthesis from the File menu. By shift-clicking, you will hear the original sound. If you click any of the rectangles (or choose any of the commands from the Play menu), you will hear the modified sound. The targets will show up as blue dots, which you can easily drag around the duration area. You can add targets to this tier by choosing "Add duration point at cursor" from the "Dur" menu. You can then click View & Edit to raise a ManipulationEditor, which will show an empty DurationTier. A Manipulation object will then appear in the list. ![]() This entry was posted in Do X in Y, News.You can use Praat to modify the relative durations in an existing sound.įirst, you select a Sound object and click "To Manipulation". Pitch_scalar_rounded = round(pitch_scalar * resolution)ĭuration_scalar_rounded = round(duration_scalar * resolution)įilenameDur$ = " 'filename$'" - ".wav" + "_dur" + "_" + string$(duration_scalar_rounded) + "_f0" + "_" + string$(pitch_scalar_rounded) + ".wav"ĪppendInfoLine: "* writing to " + outputDir$ + filenameDur$ Write to WAV file: outputDir$ + filenameDur$ # create rounded versions of the pitch and # reselect the sound and replace pitch tier # modify pitch of the pitch tier in memory ![]() Pitch_scalar = randomUniform(minF0, maxF0) # pop pitch tier into memory (apparently) # frequency range used for periodicty analysis # grab it + give params for onset of analysis window and # so we need to select the sound let's name it # this is going to require Manipulation commands, # the last argument is the compression factor # frequency range (hz) used in periodicity analysis # 75 and 600 are standard parameters for the # LENGTHEN AND RESYTHESIZE IN ONE STEP USING PSOLA # give a little info on the console re: progressĪppendInfoLine: "Working on " + inputDir$ + filename$ĭuration_scalar = randomUniform(minComp, maxComp) # open file in position ifile in string list Strings = Create Strings as file list: "list", inputDir$ + "/*.wav" # used to incorporate duration and F0 changes # 0.87, _dur_108 means compression (expansion) to factor of ![]() For example, _dur_87 means compression to factor of # The output files have _dur_X and _f0_Y inserted in their # that the script will overwrite files in that directory # (so you must create a folder called output note ![]() # script is located, and writes resulting files in. # minF0 and maxF0 and compress/expand by random factor between # kludgy script to shift pitch by random factor between # Sergey Kornilov and a pitch modification script by # 2017.11.17, Jim Magnuson, based on a compression script by I hope someone else finds it helpful! You can copy the code and paste it into a text document that you might call something like vary_duration_and_pitch.praat. The file names include tags indicating how duration and pitch were modified. wav files in a directory (the directory where the script is located), randomly compresses/expands the file according to a hard-coded range (i.e., you have to change the values in the file), randomly adjusts pitch (by multiplying by a scalar), and writes the resulting file in a folder called output that must exist in the starting directory. Putting them together, I now have a script that is called from the command line and reads in all. I found a script by Shigeto Kawahara of Keio U. We thought, “let’s just use a Praat script to randomly jigger duration and F0 - that can’t be hard, can it?” Well, it is harder than I thought given that I don’t really grok Praat scripting - it is the most foreign and strange programming language I’ve ever encountered.Īfter consulting with various colleagues, I remembered that Sergey Kornilov had used a script to compress lots of files for a project. wav files in a directory and modify them from the command line.įor a machine learning project, we wanted to induce variability in a set of speech files without recording more tokens of our critical words. It can serve as an example for how to read in all. Summary: I describe a script that makes random modifications to duration and pitch. Randomize duration and F0 of speech files in Praat
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