Praat can be used as a point-and-click GUI, but its full power is accessible if you create scripts - instructions to tell Praat to do work for you - much faster than you could ever point and click.
Here you can find some of the scripts that I use most often in my research.
There are simple things like measuring intensity or duration, and also some more complicated procedures like speech manipulation and cochlear implant simulation.

Many of these scripts havebeen updated since the last time they were posted. I don't have the bandwidth to continually update this page. But occasionally there are wholesale updates. I am not able to personally service your programming needs, but occasionally I can spot an easy-to-correct error in the code.

(eventually this site will have some accompanying images / help files)

Praat is software that is used for a wide range of hearing and speech scientific research. It is maintained by Paul Boersma and David Weenink at the University of Amsterdam.

Praat Download
Praat Download For Windows

Is it safe to download and install Praat? Praat was checked for possible viruses by various leading antivirus software products and it is proven to be 100% clean and safe. Although, no malware, spyware or other malicious threats was found we strongly advise you to check product again before installing it on your PC. Praat scripting manual (workshop) for beginners – Mauricio Figueroa same time. The options available have changed again. This is a dominant feature of Praat and of Praat scripting: this software and its programming language are object oriented, because Praat assumes the existence of a group of entities that have. Praat 6.0.29 Free Download – A powerful speech evaluation tool made from a researcher’s viewpoint yet suggested to be obtainable as well as sensible to individuals of all levels. Praat 6.0.29 is a very carefully created software option focused on those that intend to assess, synthesize as well as manipulate speech.

How to Run a Praat Script

Custom batch processing

Examples of custom batch processing

Compare spectra of all selected sounds

Gradually Blend Sounds

Calculate continuum values (form)

Calculate continuum values (procedure)

Manipulate F0 (pitch) contour

Fade in, Fade out

Calculate “corner frequencies” using the Greenwood function

Scale intensity of all sounds in a folder

Make speech-shaped noise

Local time reversal

Add silence to equate absolute duration of sounds

Print series of ERB boundaries

Filter a sound into ERB filters

Harmonize two sounds

Make duration continuum

Make fricative continuum

Make Voice Onset Time (VOT) / F0 continuum

Make spectral ripples

Vocode all selected sounds

Make Formant Continuum

Calculate Quarterback Passer Rating

Practice sounds

Acknowledgments

Advice

How to run a praat script

There's more than one way to do it. Here's what I do:

Open the txt file in your preferred text editor (like TextPad). Read through it and tinker with it however you wish. Open Praat (and any required sound objects) and click 'Praat' -> 'New Praat script'. Copy the text of the script into the Praat scrip window and press ctrl+R.

The most common piece of code that I use is a few lines that allow “batch processing” of customized actions.
What does this mean? Well, Praat can perform the same action (such as “Scale intensity”) for all the sound objects that you have selected. But sometimes, you want to perform an action over many sounds, but Praat only allows you to do it once at a time. This code opens up some new options to repeat the same action for each object that you have selected.

Examples of custom batch processing

Check to see if sounds vary in their spectral properties by quickly visualizing them in the picture window. This is *especially* useful for after you've created some sort of speech continuum or spectral ripple sounds. The first object will be drawn in blue, and the last in red; all intermediates will be interpolated between those two colors.

Start with Sound A and Sound B, create X number of sounds by gradually blending those two sounds.

Start with two values and a number of continuum steps. Calculate linear interpolation of those values to create a continuum.

Calculate continuum levels and assign them to new variables that you can use in your script

Flatten, flip, or multiply F0 contour in a sound

Fade in and/or Fade out a sound at the edges

As for setting channel specifications for a vocoder

(note: this sometimes doesn’t work on older Windows computers, on networks, or on Macs. If it doesn’t work for you, you ought to simply call up all the sounds into the list, scale them, and save them using the batch processing script)

match spectrum of broadband noise to the long-term average spectrum of selected sounds

Reserves sequential windows of a sound, as by Saberi et al. (1999)

Add silence to the onset or offset of a sound for the purpose of equalizing absolute file duration. Note: this does not manipulate phonetic duration at all.

As the title implies

As the title implies.

Low-noise noise is narrowband noise whose envelope fluctuations are minimized. A little-known property of filtered noises is that as you narrow the bandwidth of a Gaussian (/white) noise, the envelope (intensity over time) does not remain flat, but actually fluctuates quite a bit. Low-noise noise was invented to minimize these fluctuations. More details in the script.

This is a classroom demonstration that I use to show what amplitude moduations sound like. You can choose either a white-noise carrier or a 2000-Hz sinewave carrier, and declare the rate and depth of your modulaitons

Somewhat more challenging scripts

Make vocal harmonies by adding sounds where the pitch has been altered by specified semitone intervals. You have the choice of changing just the pitch, or a combination of the pitch and “vocal tract size”

Example of harmonized sounds:

Original . Major chord . Minor chord . Major 7th chord

For all selected sounds, alter duration of a selected region within the sound (e.g. the vowel nucleus) between endpoint levels, using a specified number of continuum steps. In the case of multiple selected sounds, timing landmarks are set according to those chosen in the first sound, so you want to make sure that all the sounds have the same relative duration properties to begin with. Why are you selecting landmarks instead of just time-warping the entire sound? because sometimes you want to modify the vowel without modifying the neighboring consonants! For example, check out the image below of the word 'dog' where the vowel has been expanded to 6 different durations between 75 and 350 ms.

Specify many aspects of a fricative noise, including three frequency peaks. For each peak, you modify the center frequency, the bandwidth (in terms of dB attenuation per octave). Control the spectral tilt by changing the amplitudes of the first and third peaks relative to the second peak. Control overall duration, risetime, falltime, and intensity. Create isolated fricatives, or append / pre-append the fricatives to some other (vowel) sound. Interpolate between any number of continuum steps using a linear scale, logarithmic scale, Bark scale, or cochlear space using the Greenwood function.

So far, this is the only script that is *properly* documented and on GitHub.

Control a continuum of VOT and F0 in word-initial stop consonants. You have the choice to control *only* VOT, *only* F0, or a combination of both. When altering both, you have the option to have the both co-vary together, or to control them orthogonally (as for cue-weighting experiments). Control the time range over which the F0 perturbation will occur.
Most importantly, you can ensure that the transition between the burst/aspiration portion and the vocalic port

Praat Download For Maccoursetree